Airborne geophysical survey: Bonanza, Area 3, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Anthracite Range, Area 5, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Hunter Frying Pan, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Maroon Bells, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Fossil Ridge, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Anthracite Range, Area 5, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

Airborne geophysical survey: Hunter Frying Pan, Colorado (other, 2001)
Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field values and locations. This dataset presents latitude, longitude, altitude, and magnetic-field values.

915rwpwindcon (a1) (1998)
[object Object]

interpolatedsonde (1998)
[object Object]

mwrret1liljclou (1996)
[object Object]

USGS Water Data for the Nation - United States Geological Survey (other, 1994)
This collection provides access to water-resources data collected at approximately 1.5 million sites in all 50 States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa and the Commonwealth of the Northern Mariana Islands. Online access to this data is organized around the categories surface water, groundwater, water quality, and water use.\r\n\r\nSurface-water data includes more than 850,000 station years of time-series data that describe stream levels, streamflow (discharge), reservoir and lake levels, surface-water quality, and rainfall. The data are collected by automatic recorders and manual field measurements at installations across the Nation.\r\n\r\nGroundwater data consists of more than 850,000 records of wells, springs, test holes, tunnels,drains, and excavations in the United States. Available site descriptive information includes well location information such as latitude and longitude, well depth, and aquifer. The USGS annually monitors groundwater levels in thousands of wells in the United States. Groundwater level data are collected and stored as either discrete field-water-level measurements or as continuous time-series data from automated recorders. \r\n\r\nWater-quality data includes chemical, physical, and biological properties of water, sediment and tissue samples from across the Nation. The discrete sample data base is a compilation of over 4.4 million historical water quality analyses in the USGS district data bases through September 2005. At selected surface-water and groundwater sites, the USGS maintains instruments that continuously record physical and chemical characteristics of the water including pH, specific conductance, temperature, dissolved oxygen, and percent dissolved-oxygen saturation. Supporting data such as air temperature and barometric pressure are also available at some sites. At sites where this information is transmitted automatically, data are available from the current data system.\r\n\r\nWater use refers to water that is used for specific purposes. Water-use data is collected by area type (State, county, watershed or aquifer) and source such as rivers or groundwater, and category such as public supply or irrigation. Water-use data has been reported every five years since 1950, for years ending in "0" and "5". The USGS works in cooperation with local, State, and Federal agencies as well as academic and private organizations to collect and report total withdrawals.

Formation Processes in Curecanti Archeology: The Elk Creek Site (other)
Mitigative archeological investigations were conducted in 1983 at the southern end of the important Elk Creek site, 5GN204/205, within Curecanti National Recreation Area prior to construction of a park apartment complex. That portion of the site extended onto a rocky promontory overlooking Blue Mesa Lake. Archeological activities undertaken at the site in 1982 focused upon the western half of the promontory (Jones 1986), while the eastern half of the point was investigated the following year. During the 1983 research, two small chipped-stone concentrations and an isolated projectile point were identified and collected. Stylistic comparisons of several diagnostic artifacts collected in 1983 suggest that an Early or Middle Archaic component was represented. The 1983 work at Elk Creek provided an opportunity to investigate the role of natural erosion in the formation of the Curecanti archeological record. A statistical analysis performed during the project confirmed an initial field impression that the artifacts within one of the chipped-stone concentrations were roughly size-sorted in the direction of the ground surface slope. Based in part upon an analysis of local weather and physical environmental data, that size distribution of artifacts is believed to relate to a postdepositional restructuring of the material by precipitation runoff in combination with deflation of the deposit by strong western and southwestern winds. The study suggests that ongoing erosion by water and wind operating under the particular environmental conditions of the site area may dramatically affect contextual information given the passage of sufficient time, an issue of importance to archeological research elsewhere within Curecanti and other parks in semiarid settings.

DWCZ Coal Creek (CC) (other)
Coal Creek (CC) is a high-elevation, headwater tributary to the Upper Colorado Basin located in the Ruby-Anthracite Range in the central Colorado Rocky Mountains. The CC watershed is 53 km2 in area and ranges in elevation from 2712 to 3668 meters. CC originates near Lake Irwin and enters the Slate River near the town of Crested Butte before joining East River and eventually the Gunnison River. The watershed is seasonally snow-covered from November through June. The average temperature is 0.9˚C and it receives around 670 mm of precipitation each year, about 66% of which falls as snow (Carroll et al, 2018). The remaining precipitation falls during the summer monsoon season (July through September). Although monsoon rains comprise nearly 40% of the annual precipitation, they contribute minimally to the streamflow because the moisture is taken up by vegetation and lost via evapotranspiration (Carroll et al, 2020). Vegetation in the basin is strongly aspect driven, with north facing aspects dominated by evergreen forest (65%) and south facing aspects dominated by deciduous (9%) and herbaceous (20%) vegetation. High elevation ridges are barren (3%) (Zhi et al, 2019). Discharge in CC is dominated by snowmelt, with average peak flow occurring in June in response to snowmelt. Flows recede throughout the summer and fall, with small peaks in flow due to monsoon events. CC reaches baseflow conditions by early September and they persist throughout the winter until the onset of snowmelt in April. The lower CC watershed is underlain predominately by sandstone (Mesaverde Formation) with glacial till deposits occurring near the streambed. The upper portion of the watershed is underlain by mafic intrusive plutonic rock, emplaced during the Middle Tertiary. Areas of the upper north slope of the watershed are underlain by mudstone (Wasatch Formation).

Testing API Python (other)
This resource was created as a demonstration of using Python Client for HydroShareThe imported data are related to Paonia Reservoir, Colorado, USA.

Archeological Survey of Grizzly Ridge 1995: A Section 110 Planning Survey, Black Canyon of the Gunnison National Monument, Montrose County, Colorado (other)
Archeological survey in the Grizzly Ridge new-lands acquisition in the Black Canyon of the Gunnison National Monument recorded eight prehistoric archeological sites (5MN4504- 5MN4511) and twenty-four isolated finds (5MN4512-5MN4535). The survey was planned and implemented as a Section 110 of the National Historic Preservation Act inventory activity. The survey was conducted by archeologists from the Western Archeological and Conservation Center (WACC), National Park Service, Department of Interior, Tucson, Arizona as WACC project BLCA 1995A. A total of 875 acres was intensively surveyed as a reconnaissance of the Grizzly Ridge unit. In addition, boundaries of six previously recorded sites were mapped using Global Positioning Systems technology. Three compliance surveys were conducted in conjunction with this project but are not detailed here. This report details the culture history of the region and previous archeological work in the park. Newly discovered archeological sites and isolated finds are described in detail. Preliminary assessments of significance, recommendations for additional significance assessment procedures, and general research areas are presented. Recommendations include formal NRHP testing for sites 5MN4504, 5MN4505, 5MN4509, 5MN451O, and 5MN4511, and exploratory testing of all other sites (5MN4506, 5MN4507, 5MN4508).

Stream carbon dioxide in the East River watershed, Crested Butte, CO, USA (other)
Saccardi and Winnick Data contains the East River sample data including chemistry and corrected pCO2 data (n=162) with the included column denoting whether data points were represented by NHDplus data point (n=121) and therefore used in the model.

Archeological Survey of Grizzly Ridge 1995: A Section 110 Planning Survey, Black Canyon of the Gunnison National Monument, Montrose County, Colorado (other)
Archeological survey in the Grizzly Ridge new-lands acquisition in the Black Canyon of the Gunnison National Monument recorded eight prehistoric archeological sites (5MN4504- 5MN4511) and twenty-four isolated finds (5MN4512-5MN4535). The survey was planned and implemented as a Section 110 of the National Historic Preservation Act inventory activity. The survey was conducted by archeologists from the Western Archeological and Conservation Center (WACC), National Park Service, Department of Interior, Tucson, Arizona as WACC project BLCA 1995A. A total of 875 acres was intensively surveyed as a reconnaissance of the Grizzly Ridge unit. In addition, boundaries of six previously recorded sites were mapped using Global Positioning Systems technology. Three compliance surveys were conducted in conjunction with this project but are not detailed here. This report details the culture history of the region and previous archeological work in the park. Newly discovered archeological sites and isolated finds are described in detail. Preliminary assessments of significance, recommendations for additional significance assessment procedures, and general research areas are presented. Recommendations include formal NRHP testing for sites 5MN4504, 5MN4505, 5MN4509, 5MN451O, and 5MN4511, and exploratory testing of all other sites (5MN4506, 5MN4507, 5MN4508).

Stream carbon dioxide in the East River watershed, Crested Butte, CO, USA - Brian Saccardi Saccardi; Brian Saccardi Saccardi (other)
Saccardi and Winnick Data contains the East River sample data including chemistry and corrected pCO2 data (n=162) with the included column denoting whether data points were represented by NHDplus data point (n=121) and therefore used in the model.

DWCZ- CO - Coal-Creek, Soil sensors, SoilAuger, Soil Pits, (DWCZ-CC_Soil_LBixby)-(2021) (other)
LOCATION: Coal Creek is a high-elevation, headwater tributary to the Upper Colorado Basin located in the Colorado Rocky Mountains. Coal Creek is also a sub-catchment of the larger East River watershed (300 km2) and falls within the research domain of the Rocky Mountain Biological Laboratory (RMBL). This is the Splains Conifer Granite Site. The overlying vegetation is conifer, underlying bedrock is granite and it is north facing. It is also in a Splains Creek watershed, a subwatershed of Coal Creek. In three components: ABSTRACT CC_1-5_Sensors_Bixby: Soil sensors are installed in 5 different soil pits in Crested Butte. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). Soil moisture and temperature data is collected every 30 minutes. Gas data is collected every hour. ABSTRACT SOIL AUGER CC_SoilAuger_Bixby: Soil data collected from multiple different auger sites and counting. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). ABSTRACT SOIL PITS CC_SoilPits_Bixby: Soil data collected from 5 different soil pits. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). Some additional images: CC_SoilPit_images_Bixby *View Metadata for sensor coordinates and specifications

DWCZ- CO - Coal-Creek - Radon -(DWCZ-CC-RadonArray-KJohnson) - (2021) (other)
*This resource is embargoed until fall 2022. Please stay tuned or contactczdata@colorado.edu for more information. Spring and stream sampling across Coal Creek watershed during summer of 2021 (June-October) to estimate groundwater chemistry. Sampled Approximately weekly for synoptic sampling of Coal Creek during summer to assess locations of groundwater discharge to stream. Data shows intermittent spring (IS) and surface water (SW) chemistry - to study Surface and groundwater interactions. See ESS DIVE link below for isotope data: - Abstract The radon isotope and stable water isotope data for Coal Creek Watershed, Colorado, consists of d2H, d18O, and 222Rn values from samples collected at 8 stream location along Coal Creek, samples from 7 groundwater springs within the watershed, and precipitation isotope samples collected by Next Generation Water Observing System (NGWOS) from a collector within the watershed. All stream and spring samples were collected between June and October, 2021, and precipitation isotope samples were collected between November 2020 and September 2021. These data were collected to evaluate how groundwater contributions to Coal Creek originating from a fractured hillslope and alluvial fan respond to summer monsoon rains and seasonal drying. Understanding of groundwater-surface water interactions in montane systems in critical for the future of water availability in the Western US as groundwater contributions are expected to become more important for sustaining summer stream flows. This data package contains: (1) a csv of all radon samples; (2) a csv of all stream and spring isotope samples; (3) a csv of precipitation isotope samples; and (4) a csv of locations for each sampling site. The dataset additionally includes a file-level metadata (flmd.csv) file that lists each file contained in the dataset with associated metadata; and a data dictionary (dd.csv) file that contains column/row headers used throughout the files along with a definition, units, and data type. *View Metadata for sensor coordinates and specifications

Upper Colorado River Basin River Sub-basins (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

DWCZ- Coal-Creek - CO - Radon -(DWCZ-CC-RadonArray-KJohnson) - (2021) (other)
*This resource is embargoed until fall 2022. Please stay tuned or contactczdata@colorado.edu for more information. Spring and stream sampling across Coal Creek watershed during summer of 2021 (June-October) to estimate groundwater chemistry. Sampled Approximately weekly for synoptic sampling of Coal Creek during summer to assess locations of groundwater discharge to stream. Data shows intermittent spring (IS) and surface water (SW) chemistry - to study Surface and groundwater interactions.

09119000_TOMICHI CREEK AT GUNNISON, CO (other)
Streamflow and water-quality data collected at the TOMICHI CREEK AT GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/62d86d7ed34e2842e1ed4f9b for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Upper Colorado River Basin Cottonwood Monitoring Picture Locations (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Upper Colorado River Basin Cottonwood Monitoring Picture Locations (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Upper Colorado River Basin Floodplain Percent Cottonwood Cover (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Colorado Plateau REA Gunnison Sage-Grouse and Protected Areas (other)
This map shows distribution of the Gunnison Sage-Grouse relative to various protected areas.

DWCZ CO - Coal Creek (CC) (other)
Coal Creek (CC) is a high-elevation, headwater tributary to the Upper Colorado Basin located in the Ruby-Anthracite Range in the central Colorado Rocky Mountains. The CC watershed is 53 km2 in area and ranges in elevation from 2712 to 3668 meters. CC originates near Lake Irwin and enters the Slate River near the town of Crested Butte before joining East River and eventually the Gunnison River. The watershed is seasonally snow-covered from November through June. The average temperature is 0.9˚C and it receives around 670 mm of precipitation each year, about 66% of which falls as snow (Carroll et al, 2018). The remaining precipitation falls during the summer monsoon season (July through September). Although monsoon rains comprise nearly 40% of the annual precipitation, they contribute minimally to the streamflow because the moisture is taken up by vegetation and lost via evapotranspiration (Carroll et al, 2020). Vegetation in the basin is strongly aspect driven, with north facing aspects dominated by evergreen forest (65%) and south facing aspects dominated by deciduous (9%) and herbaceous (20%) vegetation. High elevation ridges are barren (3%) (Zhi et al, 2019). Discharge in CC is dominated by snowmelt, with average peak flow occurring in June in response to snowmelt. Flows recede throughout the summer and fall, with small peaks in flow due to monsoon events. CC reaches baseflow conditions by early September and they persist throughout the winter until the onset of snowmelt in April. The lower CC watershed is underlain predominately by sandstone (Mesaverde Formation) with glacial till deposits occurring near the streambed. The upper portion of the watershed is underlain by mafic intrusive plutonic rock, emplaced during the Middle Tertiary. Areas of the upper north slope of the watershed are underlain by mudstone (Wasatch Formation).

DWCZ- CO - Coal-Creek, Soil sensors, SoilAuger, Soil Pits, (DWCZ-CC_Soil_LBixby)-(2021) - Lena Bixby; Lena Bixby (other)
LOCATION: Coal Creek is a high-elevation, headwater tributary to the Upper Colorado Basin located in the Colorado Rocky Mountains. Coal Creek is also a sub-catchment of the larger East River watershed (300 km2) and falls within the research domain of the Rocky Mountain Biological Laboratory (RMBL). This is the Splains Conifer Granite Site. The overlying vegetation is conifer, underlying bedrock is granite and it is north facing. It is also in a Splains Creek watershed, a subwatershed of Coal Creek. In three components: ABSTRACT CC_1-5_Sensors_Bixby: Soil sensors are installed in 5 different soil pits in Crested Butte. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). Soil moisture and temperature data is collected every 30 minutes. Gas data is collected every hour. ABSTRACT SOIL AUGER CC_SoilAuger_Bixby: Soil data collected from multiple different auger sites and counting. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). ABSTRACT SOIL PITS CC_SoilPits_Bixby: Soil data collected from 5 different soil pits. Sites are located in varying bedrock types (Granite and Sandstone) and vegetation types (Aspen and Conifer). Some additional images: CC_SoilPit_images_Bixby *View Metadata for sensor coordinates and specifications

Upper Colorado River Basin Valley Centerline (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

09119000_TOMICHI CREEK AT GUNNISON, CO (other)
Streamflow and water-quality data collected at the TOMICHI CREEK AT GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/655d2063d34ee4b6e05cc9e6 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Summary Report: Gunnison Climate Adaptation Pilot Project - Betsy Neely (other)
The Gunnison Climate Working Group is piloting a on-the-ground climate adaptation project to buildresilience of riparian areas/wet meadows – priority brood-rearing habitat – to help the Gunnison Sagegrouseand other wildlife species adapt to climate change in the Gunnison Basin. Riparian areas havebeen impacted by head cuts, erosion, and lowered water tables. These impacts will likely increase withincreased drought and erosion from intense rainstorms, decreasing food and chick survival. Afterprioritizing locations and designing treatments, we are building relatively inexpensive low-techstructures in riparian areas on a few ranches to “let the water do the work” to raise the water table andimprove baseflows to support grasses and insects [...]

09113980_OHIO CREEK ABOVE MOUTH NR GUNNISON, CO (other)
Streamflow and water-quality data collected at the OHIO CREEK ABOVE MOUTH NR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/5ebeffb082ce476925e66510 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Webinar: Building Resilience to Climate Change in the Gunnison Basin - Betsy Neely (other)
Webinar on Building Resilience to Climate Change in the Gunnison Basin

Upper Colorado River Basin River Thalweg (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Colorado Plateau REA Conservation Elements - Terrestrial Species: Gunnison Sage-Grouse (other)
This map shows the potential current distribution of Gunnison sage-grouse, in the context of current and near-term terrestrial intactness and long-term potential for climate change and energy development.

Testing API Python (other)
This resource was created as a demonstration of using Python Client for HydroShareThe imported data are related to Paonia Reservoir, Colorado, USA.

Formation Processes in Curecanti Archeology: The Elk Creek Site (other)
Mitigative archeological investigations were conducted in 1983 at the southern end of the important Elk Creek site, 5GN204/205, within Curecanti National Recreation Area prior to construction of a park apartment complex. That portion of the site extended onto a rocky promontory overlooking Blue Mesa Lake. Archeological activities undertaken at the site in 1982 focused upon the western half of the promontory (Jones 1986), while the eastern half of the point was investigated the following year. During the 1983 research, two small chipped-stone concentrations and an isolated projectile point were identified and collected. Stylistic comparisons of several diagnostic artifacts collected in 1983 suggest that an Early or Middle Archaic component was represented. The 1983 work at Elk Creek provided an opportunity to investigate the role of natural erosion in the formation of the Curecanti archeological record. A statistical analysis performed during the project confirmed an initial field impression that the artifacts within one of the chipped-stone concentrations were roughly size-sorted in the direction of the ground surface slope. Based in part upon an analysis of local weather and physical environmental data, that size distribution of artifacts is believed to relate to a postdepositional restructuring of the material by precipitation runoff in combination with deflation of the deposit by strong western and southwestern winds. The study suggests that ongoing erosion by water and wind operating under the particular environmental conditions of the site area may dramatically affect contextual information given the passage of sufficient time, an issue of importance to archeological research elsewhere within Curecanti and other parks in semiarid settings.

09113980_OHIO CREEK ABOVE MOUTH NR GUNNISON, CO (other)
Streamflow and water-quality data collected at the OHIO CREEK ABOVE MOUTH NR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/62d86d7ed34e2842e1ed4f9b for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Upper Colorado River Basin Cottonwood Monitoring Picture Locations .mpk (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

09112200_EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO (other)
Streamflow and water-quality data collected at the EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO go to: https://www.sciencebase.gov/catalog/item/5ebeffb082ce476925e66510 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Upper Colorado River Basin Cottonwood Monitoring Picture Locations .mpk (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

TNC Fact Sheet: Managing for Change in the Gunnison Basin: Building Resilience - Betsy Neely (other)
Our actions today to build ecosystem resilience to climate change will help us protect the Gunnison Basin’s natural resources—clean air and wildlife habitat, and the livelihoods they provide in the future for people. The Gunnison Climate Working Group, a group of public and private partners formed in 2010, is looking to understand the threats posed by climate change, identify strategies to reduce adverse impacts, and promote coordinated implementation of these strategies.This group is also collaborating with the Southwest Climate Change Initiative (SWCCI), whose aim is to provide climate adaptation information and tools to conservation practitioners in vulnerable landscapes of Arizona, Colorado, New Mexico and Utah. Colorado’s Gunnison [...]

GAP Web Service: Gunnison Sage-grouse (other)
The USGS GAP Analysis Program has developed range maps and distribution models for 1401 species, 604 of which are found within the SRLCC. This record's parent folder contains several examples of GAP species web services. The GAP website has a complete list of available web services for species as well as a map viewer for species data. Species: Gunnison Sage-grouse ( Centrocercus minimus) There are two web services for this species: the range map, showing the geographic limits within which the species can be found, and a distribution model, which predicts the environment within the range that is suitable for occupation by the species. Link to metadata for GAP range maps and distribution models. To access services, select one of [...]

09114500_GUNNISON RIVER NEAR GUNNISON, CO (other)
Streamflow and water-quality data collected at the GUNNISON RIVER NEAR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/5ebeffb082ce476925e66510 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Gothic (CO) Euphydryas gillettii vital rates 1981-1985, 2002-2004 (other)
Data were collected during July-September in 1981 through 1985 and during June-September 2002 through 2004. Mark-release-recapture was done for adult butterflies, and daily survival rate estimated for females using Jolly-Seber methods. Egg clusters were counted, along with number of eggs per cluster. Data were collected each year on egg cluster survival, and in 2004 on larval survival conditional on egg cluster survival. The data were used to construct yearly vital rates, including daily probability of laying an egg cluster, cluster size, survival from egg to diapause, survival over-winter to adult stage, and female daily survival probability. Population sizes were decreasing during nearly all years included in the data set, although a 1-2 order of magnitude increase in size occured ca. 2000-2, which is not included here.

Paonia Reservoir_ Modeling (other)
This Resource contains input data required to build a numerical model for Paonia Reservoir, Colorado, USA. The provided data includes: - Upstream discharges since 1962 - Sediment rating curve - Geospatial files (Paonia basin, streams and gages shapefiles, GeoTIFF elevation) The author is working on using the SRH-1D model to simulate the reservoir operation. The outputs will be posted. This resource contains an API Python file.

Upper Colorado River Basin River Thalweg (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Archeological Survey of Black Canyon of the Gunnison National Monument and Archeological Inventory and Evaluation of Curecanti Recreation Area (other)
The survey and research work conducted at Black Canyon of the Gunnison National Recreation Area and Curecanti Recreation Area are clear examples of how meagre beginnings can develop into a fruitful, long-range program designed on the one hand to meet National Park Service management needs, and on the other hand to provide an understanding of an area prehistory following a program designed to answer a series of questions about the culture history and adaptive patterns in a particular area.

DWCZ - CO - Coal Creek - Soil Collection ICP - (DWCZ-MEF-CC-SoilSample-Transect-AWinkler) - (2022-2023) (other)
Locations: Coal Creek, which serves as the drinking water source for the town of Crested Butte, CO, receives both acid mine and acid rock drainage as a result of legacy mining and fractured porphyry networks, respectively. It has a Koppen climate class of Dfc, aka continental subarctic. Local ecology of the creek varies from site to site, with some parts being far more vegetative than others. Abstract: Acid mine drainage (AMD) and acid rock drainage (ARD) result in acidic, metal-laden solutions that seep into surface and groundwater systems. The hyporheic zone, where surface and groundwater meet, serves as a natural filtration system, where biogeochemical reactions occur that influence metal retention and transformation. By analyzing changes in metal concentrations and phases throughout time and space, valuable information can be gained in regards to the mechanisms at work within the hyporheic zone. Hyporheic sediment and sediment from planted control soil columns were sampled on a seasonal basis along Coal Creek, an area affected by both AMD and ARD. Samples were analyzed for phase changes via XRD and SEM and sequential extractions created using the samples were analyzed via ICP-OES for elemental fraction concentrations. Preliminary results show the retention and release of metals via redox chemistry. These changes are seasonally dynamic and vary from site to site along the creek, illustrating the capacity of the hyporheic zone to act as a filter for AMD at different points throughout the year.

Testing API Python (other)
This resource was created as a demonstration of using Python Client for HydroShareThe imported data are related to Paonia Reservoir, Colorado, USA.

Aqueous geochemical dynamics of metals and rare earth elements in an acid rock drainage-impacted alpine watershed (other)
Numerous mountain watersheds in the Colorado Mineral Belt (CMB) are impacted by acid rock drainage (ARD) and acid mine drainage (AMD), which mobilize metals and rare earth elements (REEs) into surface waters. In the upper Roaring Fork watershed near Independence Pass, natural ARD from a highly mineralized tributary is the primary source of acidity and element loading into Lincoln Creek, with additional contributions from historical mining at the Ruby Mine. Despite known concerns about metal transport, the fate of REEs remains poorly understood in this system and other similar watersheds. This study focuses on the behavior of major ions, trace metals, and REEs in surface waters along a flow path receiving ARD and AMD inputs. The objectives were to (1) evaluate the transport, mixing, and attenuation of major solutes and REEs across stream reaches, and (2) characterize REE geochemical signatures, including their redox behavior and utility as tracers in ARD/AMD impacted systems. Filtered water samples from six main sites were analyzed by Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) and Ion Chromatography (IC) methods, and results were explored through mass balance transport calculations, bivariate plots, shale-normalized REE patterns, and the cerium anomaly. Water chemistry in the Lincoln Creek basin reveals distinct geochemical fingerprints for the Ruby Mine (enriched in Ca, Mg, Mn, and Cd) and the Mineralized Tributary (enriched in SO4, Fe, Al, and Cu), with several metals showing increasing trends in recent years. REE fractionation patterns and Ce anomalies further distinguish source contributions and processes, with the Mineralized Tributary displaying MREE enrichment from natural pyrite weathering and the Ruby Mine exhibiting HREE enrichment tied to mine-derived flows. Most solutes showed a mix of conservative and reactive transport depending on site and season, while certain late-season metal concentrations at the Grizzly Reservoir inlet exceeded aquatic life standards. These results indicate that source composition mainly controls major solute and REE patterns in surface waters, with reactive transport processes selectively influencing the behavior of certain elements. This thesis advances knowledge of metal and REE dynamics in high-elevation, ARD-affected watersheds and supports continued monitoring and management in the Lincoln Creek basin.

DWCZ- CO - Coal-Creek - Radon -(DWCZ-CC-RadonArray-KJohnson) - (2021) (other)
*This resource is embargoed until fall 2022. Please stay tuned or contactczdata@colorado.edu for more information. Spring and stream sampling across Coal Creek watershed during summer of 2021 (June-October) to estimate groundwater chemistry. Sampled Approximately weekly for synoptic sampling of Coal Creek during summer to assess locations of groundwater discharge to stream. Data shows intermittent spring (IS) and surface water (SW) chemistry - to study Surface and groundwater interactions. *View Metadata for sensor coordinates and specifications

Cement Creek Cave vertebrate fauna (CEMENT) FAUNMAP (Neotoma) (other)
Cement Creek Cave vertebrate fauna (CEMENT) FAUNMAP (Neotoma)

Upper Colorado River Basin Valley Centerline (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Upper Colorado River Basin Floodplain Land Cover (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Cement Creek Cave geochronologic (CEMENT) FAUNMAP (Neotoma) (other)
Cement Creek Cave geochronologic (CEMENT) FAUNMAP (Neotoma)

Testing API Python (other)
This resource was created as a demonstration of using Python Client for HydroShareThe imported data are related to Paonia Reservoir, Colorado, USA.

Aqueous geochemical dynamics of metals and rare earth elements in an acid rock drainage-impacted alpine watershed (other)
Numerous mountain watersheds in the Colorado Mineral Belt (CMB) are impacted by acid rock drainage (ARD) and acid mine drainage (AMD), which mobilize metals and rare earth elements (REEs) into surface waters. In the upper Roaring Fork watershed near Independence Pass, natural ARD from a highly mineralized tributary is the primary source of acidity and element loading into Lincoln Creek, with additional contributions from historical mining at the Ruby Mine. Despite known concerns about metal transport, the fate of REEs remains poorly understood in this system and other similar watersheds. This study focuses on the behavior of major ions, trace metals, and REEs in surface waters along a flow path receiving ARD and AMD inputs. The objectives were to (1) evaluate the transport, mixing, and attenuation of major solutes and REEs across stream reaches, and (2) characterize REE geochemical signatures, including their redox behavior and utility as tracers in ARD/AMD impacted systems. Filtered water samples from six main sites were analyzed by Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) and Ion Chromatography (IC) methods, and results were explored through mass balance transport calculations, bivariate plots, shale-normalized REE patterns, and the cerium anomaly. Water chemistry in the Lincoln Creek basin reveals distinct geochemical fingerprints for the Ruby Mine (enriched in Ca, Mg, Mn, and Cd) and the Mineralized Tributary (enriched in SO4, Fe, Al, and Cu), with several metals showing increasing trends in recent years. REE fractionation patterns and Ce anomalies further distinguish source contributions and processes, with the Mineralized Tributary displaying MREE enrichment from natural pyrite weathering and the Ruby Mine exhibiting HREE enrichment tied to mine-derived flows. Most solutes showed a mix of conservative and reactive transport depending on site and season, while certain late-season metal concentrations at the Grizzly Reservoir inlet exceeded aquatic life standards. These results indicate that source composition mainly controls major solute and REE patterns in surface waters, with reactive transport processes selectively influencing the behavior of certain elements. This thesis advances knowledge of metal and REE dynamics in high-elevation, ARD-affected watersheds and supports continued monitoring and management in the Lincoln Creek basin.

Paonia Reservoir_ Modeling (other)
This Resource contains input data required to build a numerical model for Paonia Reservoir, Colorado, USA. The provided data includes: - Upstream discharges since 1962 - Sediment rating curve - Geospatial files (Paonia basin, streams and gages shapefiles, GeoTIFF elevation) The author is working on using the SRH-1D model to simulate the reservoir operation. The outputs will be posted. This resource contains an API Python file.

Cement Creek Cave specimen stable isotope (CEMENT) Faunal Isotope Database (Neotoma) (other)
Cement Creek Cave specimen stable isotope (CEMENT) Faunal Isotope Database (Neotoma)

09112200_EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO (other)
Streamflow and water-quality data collected at the EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO go to: https://www.sciencebase.gov/catalog/item/655d2063d34ee4b6e05cc9e6 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Upper Colorado River Basin Floodplain Percent Cottonwood Cover (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Upper Colorado River Basin Floodplain Land Cover (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

09114500_GUNNISON RIVER NEAR GUNNISON, CO (other)
Streamflow and water-quality data collected at the GUNNISON RIVER NEAR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/655d2063d34ee4b6e05cc9e6 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

09119000_TOMICHI CREEK AT GUNNISON, CO (other)
Streamflow and water-quality data collected at the TOMICHI CREEK AT GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/5ebeffb082ce476925e66510 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Paonia Reservoir_ Modeling (other)
This Resource contains input data required to build a numerical model for Paonia Reservoir, Colorado, USA. The provided data includes: - Upstream discharges since 1962 - Sediment rating curve - Geospatial files (Paonia basin, streams and gages shapefiles, GeoTIFF elevation) The author is working on using the SRH-1D model to simulate the reservoir operation. The outputs will be posted. This resource contains an API Python file.

09112200_EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO (other)
Streamflow and water-quality data collected at the EAST RIVER BELOW CEMENT CREEK NR CRESTED BUTTE, CO go to: https://www.sciencebase.gov/catalog/item/62d86d7ed34e2842e1ed4f9b for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

DWCZ - CO - Coal Creek - Soil Collection ICP - (DWCZ-MEF-CC-SoilSample-Transect-AWinkler) - (2022-2023) (other)
Locations: Coal Creek, which serves as the drinking water source for the town of Crested Butte, CO, receives both acid mine and acid rock drainage as a result of legacy mining and fractured porphyry networks, respectively. It has a Koppen climate class of Dfc, aka continental subarctic. Local ecology of the creek varies from site to site, with some parts being far more vegetative than others. Abstract: Acid mine drainage (AMD) and acid rock drainage (ARD) result in acidic, metal-laden solutions that seep into surface and groundwater systems. The hyporheic zone, where surface and groundwater meet, serves as a natural filtration system, where biogeochemical reactions occur that influence metal retention and transformation. By analyzing changes in metal concentrations and phases throughout time and space, valuable information can be gained in regards to the mechanisms at work within the hyporheic zone. Hyporheic sediment and sediment from planted control soil columns were sampled on a seasonal basis along Coal Creek, an area affected by both AMD and ARD. Samples were analyzed for phase changes via XRD and SEM and sequential extractions created using the samples were analyzed via ICP-OES for elemental fraction concentrations. Preliminary results show the retention and release of metals via redox chemistry. These changes are seasonally dynamic and vary from site to site along the creek, illustrating the capacity of the hyporheic zone to act as a filter for AMD at different points throughout the year.

Upper Colorado River Basin River Sub-basins (other)
The Southern Rockies LCC is home to narrowleaf cottonwood (Populus angustifolia), common at elevations above 1800 m, and Fremont cottonwood [a common name regionally attached to the ecologically very similar Populus fremontii subsp. fremontii S. Watson and P. deltoides subsp. wislizenii (S. Watson) Eckenwalder, as well as their intergrades], which is typically found at elevations below 1800 m. This geographical information system (GIS) contains the data sets used in an assessment of the amount and character of native Fremont cottonwood forest remaining on the mainstem floodplains in 26 subbasins in the Upper Colorado River Basin (UCRB), published in 2007 (Andersen, D.C., D.J. Cooper, and K. Northcott. 2007. Dams, floodplain land use, [...]

Aqueous geochemical dynamics of metals and rare earth elements in an acid rock drainage-impacted alpine watershed (other)
Numerous mountain watersheds in the Colorado Mineral Belt (CMB) are impacted by acid rock drainage (ARD) and acid mine drainage (AMD), which mobilize metals and rare earth elements (REEs) into surface waters. In the upper Roaring Fork watershed near Independence Pass, natural ARD from a highly mineralized tributary is the primary source of acidity and element loading into Lincoln Creek, with additional contributions from historical mining at the Ruby Mine. Despite known concerns about metal transport, the fate of REEs remains poorly understood in this system and other similar watersheds. This study focuses on the behavior of major ions, trace metals, and REEs in surface waters along a flow path receiving ARD and AMD inputs. The objectives were to (1) evaluate the transport, mixing, and attenuation of major solutes and REEs across stream reaches, and (2) characterize REE geochemical signatures, including their redox behavior and utility as tracers in ARD/AMD impacted systems. Filtered water samples from six main sites were analyzed by Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) and Ion Chromatography (IC) methods, and results were explored through mass balance transport calculations, bivariate plots, shale-normalized REE patterns, and the cerium anomaly. Water chemistry in the Lincoln Creek basin reveals distinct geochemical fingerprints for the Ruby Mine (enriched in Ca, Mg, Mn, and Cd) and the Mineralized Tributary (enriched in SO4, Fe, Al, and Cu), with several metals showing increasing trends in recent years. REE fractionation patterns and Ce anomalies further distinguish source contributions and processes, with the Mineralized Tributary displaying MREE enrichment from natural pyrite weathering and the Ruby Mine exhibiting HREE enrichment tied to mine-derived flows. Most solutes showed a mix of conservative and reactive transport depending on site and season, while certain late-season metal concentrations at the Grizzly Reservoir inlet exceeded aquatic life standards. These results indicate that source composition mainly controls major solute and REE patterns in surface waters, with reactive transport processes selectively influencing the behavior of certain elements. This thesis advances knowledge of metal and REE dynamics in high-elevation, ARD-affected watersheds and supports continued monitoring and management in the Lincoln Creek basin.

Gothic (CO) Euphydryas gillettii vital rates 1981-1985, 2002-2004 (other)
Data were collected during July-September in 1981 through 1985 and during June-September 2002 through 2004. Mark-release-recapture was done for adult butterflies, and daily survival rate estimated for females using Jolly-Seber methods. Egg clusters were counted, along with number of eggs per cluster. Data were collected each year on egg cluster survival, and in 2004 on larval survival conditional on egg cluster survival. The data were used to construct yearly vital rates, including daily probability of laying an egg cluster, cluster size, survival from egg to diapause, survival over-winter to adult stage, and female daily survival probability. Population sizes were decreasing during nearly all years included in the data set, although a 1-2 order of magnitude increase in size occured ca. 2000-2, which is not included here.

DWCZ CO - Coal Creek (CC) (other)
Coal Creek (CC) is a high-elevation, headwater tributary to the Upper Colorado Basin located in the Ruby-Anthracite Range in the central Colorado Rocky Mountains. The CC watershed is 53 km2 in area and ranges in elevation from 2712 to 3668 meters. CC originates near Lake Irwin and enters the Slate River near the town of Crested Butte before joining East River and eventually the Gunnison River. The watershed is seasonally snow-covered from November through June. The average temperature is 0.9˚C and it receives around 670 mm of precipitation each year, about 66% of which falls as snow (Carroll et al, 2018). The remaining precipitation falls during the summer monsoon season (July through September). Although monsoon rains comprise nearly 40% of the annual precipitation, they contribute minimally to the streamflow because the moisture is taken up by vegetation and lost via evapotranspiration (Carroll et al, 2020). Vegetation in the basin is strongly aspect driven, with north facing aspects dominated by evergreen forest (65%) and south facing aspects dominated by deciduous (9%) and herbaceous (20%) vegetation. High elevation ridges are barren (3%) (Zhi et al, 2019). Discharge in CC is dominated by snowmelt, with average peak flow occurring in June in response to snowmelt. Flows recede throughout the summer and fall, with small peaks in flow due to monsoon events. CC reaches baseflow conditions by early September and they persist throughout the winter until the onset of snowmelt in April. The lower CC watershed is underlain predominately by sandstone (Mesaverde Formation) with glacial till deposits occurring near the streambed. The upper portion of the watershed is underlain by mafic intrusive plutonic rock, emplaced during the Middle Tertiary. Areas of the upper north slope of the watershed are underlain by mudstone (Wasatch Formation).

09114500_GUNNISON RIVER NEAR GUNNISON, CO (other)
Streamflow and water-quality data collected at the GUNNISON RIVER NEAR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/62d86d7ed34e2842e1ed4f9b for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

DWCZ- CO - Coal-Creek - Radon -(DWCZ-CC-RadonArray-KJohnson) - (2021) (other)
*This resource is embargoed until fall 2022. Please stay tuned or contactczdata@colorado.edu for more information. Spring and stream sampling across Coal Creek watershed during summer of 2021 (June-October) to estimate groundwater chemistry. Sampled Approximately weekly for synoptic sampling of Coal Creek during summer to assess locations of groundwater discharge to stream. Data shows intermittent spring (IS) and surface water (SW) chemistry - to study Surface and groundwater interactions. *View Metadata for sensor coordinates and specifications

Aqueous geochemical dynamics of metals and rare earth elements in an acid rock drainage-impacted alpine watershed (other)
Numerous mountain watersheds in the Colorado Mineral Belt (CMB) are impacted by acid rock drainage (ARD) and acid mine drainage (AMD), which mobilize metals and rare earth elements (REEs) into surface waters. In the upper Roaring Fork watershed near Independence Pass, natural ARD from a highly mineralized tributary is the primary source of acidity and element loading into Lincoln Creek, with additional contributions from historical mining at the Ruby Mine. Despite known concerns about metal transport, the fate of REEs remains poorly understood in this system and other similar watersheds. This study focuses on the behavior of major ions, trace metals, and REEs in surface waters along a flow path receiving ARD and AMD inputs. The objectives were to (1) evaluate the transport, mixing, and attenuation of major solutes and REEs across stream reaches, and (2) characterize REE geochemical signatures, including their redox behavior and utility as tracers in ARD/AMD impacted systems. Filtered water samples from six main sites were analyzed by Inductively-Coupled Plasma Mass Spectrometry (ICP-MS) and Ion Chromatography (IC) methods, and results were explored through mass balance transport calculations, bivariate plots, shale-normalized REE patterns, and the cerium anomaly. Water chemistry in the Lincoln Creek basin reveals distinct geochemical fingerprints for the Ruby Mine (enriched in Ca, Mg, Mn, and Cd) and the Mineralized Tributary (enriched in SO4, Fe, Al, and Cu), with several metals showing increasing trends in recent years. REE fractionation patterns and Ce anomalies further distinguish source contributions and processes, with the Mineralized Tributary displaying MREE enrichment from natural pyrite weathering and the Ruby Mine exhibiting HREE enrichment tied to mine-derived flows. Most solutes showed a mix of conservative and reactive transport depending on site and season, while certain late-season metal concentrations at the Grizzly Reservoir inlet exceeded aquatic life standards. These results indicate that source composition mainly controls major solute and REE patterns in surface waters, with reactive transport processes selectively influencing the behavior of certain elements. This thesis advances knowledge of metal and REE dynamics in high-elevation, ARD-affected watersheds and supports continued monitoring and management in the Lincoln Creek basin.

Archeological Survey of Black Canyon of the Gunnison National Monument and Archeological Inventory and Evaluation of Curecanti Recreation Area (other)
The survey and research work conducted at Black Canyon of the Gunnison National Recreation Area and Curecanti Recreation Area are clear examples of how meagre beginnings can develop into a fruitful, long-range program designed on the one hand to meet National Park Service management needs, and on the other hand to provide an understanding of an area prehistory following a program designed to answer a series of questions about the culture history and adaptive patterns in a particular area.

09113980_OHIO CREEK ABOVE MOUTH NR GUNNISON, CO (other)
Streamflow and water-quality data collected at the OHIO CREEK ABOVE MOUTH NR GUNNISON, CO go to: https://www.sciencebase.gov/catalog/item/655d2063d34ee4b6e05cc9e6 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: Monthly flow data; mloads.csv: Monthly water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results

Paonia Reservoir_ Modeling (other)
This Resource contains input data required to build a numerical model for Paonia Reservoir, Colorado, USA. The provided data includes: - Upstream discharges since 1962 - Sediment rating curve - Geospatial files (Paonia basin, streams and gages shapefiles, GeoTIFF elevation) The author is working on using the SRH-1D model to simulate the reservoir operation. The outputs will be posted. This resource contains an API Python file.

"Schedule of Proposed Actions" for the Grand Mesa, Uncompahgre, and Gunnison National Forests. (1994)
"January 21, 1994."

"Summary of Qualifications Westinghouse Plasma Gasification Technology "

$1 million question: Some would profit greatly from water deal (2000)
"The Pueblo Chieftain. June 23, 2000."

1974 Comparison Average Annual River Basin Water Supply (1974)
"Bureau of Rec. Water basin supply data. 1974."

1980 (1980)
"Western State College of Colorado. 1979/1980."

1993 Annual Legislative Review: Reinventing State Water Rights Systems (1993)
"Water Strategist. 1993."

1993 Annual Water Law and Water Policy Conference (1993)
"Institute for Advanced Legal Studies University of Denver College of Law and Stratecon, Inc."

1994 Colorado Water Workshop (1994)
"Gary M. Bostrom, water, 1994, Colorado, Workshop"

2000 (2000)
"New Mexico 4/30/2000"

24th Annual Water Workshop (1999)
"“The Appropriation Doctrine Meets Miss Manners: Can a Social Conscience Be Developed Within the Appropriation Doctrine?” L. Richard Bratton BRATTON & McCLOW, LLC July 28th 1999"

25 Facts About Water in the San Luis Valley
"San Luis Valley Water Quality Demonstration Project."

3-Stage FERC Consultation Process Licensing and Relicensing Regulations (1991)
"Thomas Camp. Federal Energy Regulation Commission Office of Hydropower Licensing. December 3, 1991."

A 1985 Marketing Survey Summer Tourism in Gunnison County (1985)
"By Stephen M. Van De Velde and Rural Communities Institute at Western State College of Colorado. 1985."

A 1985 Marketing Survey: Summer Tourism in Gunnison County (1985)
"Stephen M Van De Velde. Rural Communities Institute Western State College of Colorado. 1985"

A Bill for an Act Concerning State Planning and Infrastructure
"By Senators Evans and Powers; Also Representative McElhany Senate Bill 00-215"

A Bill to Authorize the Secretary of the Interior to Contruct, Operate, and Maintain the Colorado River Storage Project and Participating Projects, and for Other Purposes (1955)
"Committee on Interior and Insular Affairs House of Representatives 1955"

A Citizen's Factsheet: Utility Rate Structures Should Promote Energy Conservation (1976)
"Colorado Open Space Council. August 1976."

A Citizens? View of Land Use in Colorado (1976)
"Colorado Land Use Commision. 1976."

A Citizen’s Guide to Radon: what it is and what to do about it (1968)
"United States Environmental Protection Agency. 1968."

A Classification of the Riparian Vegetation of the Gunnison River Basin, Colorado
"Prepared by: Gwen Kittel, Rene Rondeau and Steve Kettler"

A Colorado Citizen’s Guide to Achieving a Healthy Community, Economy, and Environment
"A handbook to Colorado citizen’s guide to achieving a healthy community, economy and environment"

A Comparative Assessment of Commercial Technologies for Conversion of Solid Waste to Energy
"Technical report (October 2013). Covers US, Europe, Japan. Topics: refuse derived fuel, mass burn firing, air fed gasification, municipal solid waste. Agencies: USEPA, US Department of Energy, EnviroPower Renewable Inc.. Cites 20 external works."

A Conduct and Evaluation of A Cloud Seeing Program
"Technical report (2011-2012). Covers Upper Gunnison River Basin, Gunnison County, Hinsdale. Topics: cloud seeding, weather modification, selective seeding, snowpack water equivalent. Agencies: North American Weather Consultants, Colorado Water Conservation Board, Dos Rios Water System. Cites 14 external works."

A Fence Design for Excluding Elk Without Impeding Other Wildlife (2007)
"Kurt C. VerCauteren, Nathan W. Seward, Michael J. Lavelle, Justin W. Fischer, and Gregory E. Phillips. Rangeland Ecology & Management 60(5). September 2007."

A Future for Colorado (1976)
"Sally Ranney. The Wilderness Society. August 10, 1976."

A Geologist's View of Global Change
"|’: There have been about 40 glacial cycles during the f = past 3 million years. Civilization developed during the \"Current interglacial that has lasted about 12,000 years. Temperature Glacial 5 5.0 4° 35 a 1 05 0 400,000 Years 4 Million Yea rs Pleistocene H Stone Age | Today's CO, level is higher than it has been for 650,000 years. Temperature (C) mn h& yO 2 Deuterium %eo CO, and temperature are linked. CO, (ppmv) 400 40,000 Years | 200 100 0"

A Guide for Local Government Agencies- Establishing Cost Allocation Plans and Indirect Cost Proposals for Grants and Contracts with the Federal Government (1968)
"U.S Department of Health, Education, and Welfare- Eilliot L. Richardson, James F. Kelly, Ernest M. Allen, Sc.D. 1968."

A Land Use Program For Colorado (1973)
"John R. Crowley. 1973."

A Land Use Program for Colorado- A Report by the Colorado Land Use Commission
"Colorado Land Use Commission. John R. Crowly- Chairman."

A Modest Proposal for the Best in Colorado Water Development (2003)
"Ralph E. Clark III. August 16, 2003."

A Multilevel Analysis of Production Capabilities of the National Forest System (1991)
"John Hof and Tony Baltic. 1991."

A Multilevel Optimization System for Large-Scale Renewable Resource Planning (1986)
"Hof, G. John & Pickens, B. James. 1986."

A Multilevel Optimization System for Large-Scale Renewable Resource Planning (1986)
"John G. Hof and James B. Pickens. May 1986."

A New Hydrologic Perspective of How Beaver Ponds Function
"Bob Beschta. Natural Resource News."

A Pebble Count Procedure for Assessing Watershed Cumulative Effects (1995)
"Gregor S. Bevenger and Rudy M. King. 1995."

A Photographic Utilization Guide for Key Riparian Graminoids (1994)
"John W. Kinney, Warren P. Clary. 1994."

A Proposal to Research Processses for Utilizing Information and for Developing as Broad-Based Consensus as Possible in Decision Making for Small Size Communities in Western Colorado Impacted by Energy Developments (1975)
"W. David Zimmerman. Thorne Ecological Institute. 1975."

A Resolution Adopting Temporary Regulations for Gunnison County Land Use Change, Access, Reclamation, Individual Sewage Disposal System or Building Permits on Lands Located Wholly or Partially Within a 0.60 Mile Radius of a Gunnison Sage-Grouse Lek or Located Wholly or Partially Within Gunnison Sage-Grouse Occupied Habitat (2006)
"Jim Starr, Hap Channell, Paula Swenson. Board of County Commissioners County of Gunnison, Colorado. June 2006."

A Resolution Amending Section 11-106: Protection of Wildlife Habitat Areas and Related Sections of the Gunnison County Land USe Resolution and Replacing the Temporary Regulations for Gunnison County Land Use Change, Access, Reclamation, Individual Sewage Disposal System or Building Permits on Lands Located Wholly or Partially Within a 0.60 Mile Radius of a Gunnison Sage-Grouse Lek or Located Wholly or Partially Within Gunnison Sage-Grouse Occupied Habitat (2007)
"Jim Starr, Hap Channell, Paula Swenson. Board of County Commissioners County of Gunnison, Colorado. April 3, 2007."

A State at Risk: A Study of Colorado River Compact Obligations
"Prepared by POWER Executive Committee. Revised 5-10-99"

A System for Conservation Planning: Progress in Summit and Larimer Counties
"One of the overarching goals of the Colorado Division of Wildlife Long Range Plan is to \"Lead statewide efforts involving federal, state, county and local governments, private landowners and other organizations to define and identify high-priority habitats in the state.\" A System for Conservation Planning (hereafter, SCoP, pronounced \"scope\") is an experimental project that is helping set priorities for habitat protection. SCoP was motivated by the realization that rapid growth of the human population will be the most important source of change in wildlife habitat in Colorado during the coming decade and beyond. In the face of such change, Colorado counties and municipalities need ways to identify particularly significant wildlife habitats. They also need tools to protect those habitats. ‘ The mission of the SCoP project is to help local communities set biologically sound priorities for habitat conservation and to inform those communities of the economic and regulatory mechanisms available to achieve habitat conservation. To accomplish this mission, the goal of the SCoP project is to. obtain, assemble, and distribute state of the art information on effects of land use on wildlife diversity, particularly land use associated with rapid _ population growth. SCoP is working toward this goal in three parallel efforts: * Development of a collaborative process to help decision makers, planners, and citizens work together to set conservation priorities. * Production.of accessible information systems that. will help citizens and decision makers foresee large scale, cumulative effects of changes in land use on wildlife"

A Useful Guide to Architecture, History and Building in Crested Butte (1976)
"Town of Crested Butte. 1976."

A Useful Guide to Architecture, History, & Building in Crested Butte (1995)
"Myles C Rademan. The Town of Crested Butte. May 29, 1995."

A Walking Tour of Crested Butte
"fe IO © OO@|. so Ks = TOWN © iS A : RK = ‘ g : Ae ote O J eee : 4~ To KEBLER. PASS WHITE ROCK AVE. : ar Vr lf rr MH {72 BG Minne \\\\ TOWN HISTORY Hy Crested Butte's first inhabitants were the Ute Indians, who came here during the summers. When mining I : ested Butte served as the supply town for in this area, the Indians were squeezed out. In the late Lda es stad SUSE sae ey and Rio. Grande all the surrounding mining areas. The Town was incorporated laid a narrow gauge railway from Gunnison to Crested Butte. Towns like Irwin, Pittsburg, Elkton, Ashcroft, Gothic, and Aspen utilized the railhead at Crested Butte. rel Colorado Fuel and Iron Company owned the largest coal mines here but other smaller operat oe alee Sete ed, In the 30's and 40's, the C.F. & I. began finding coal closer to their steel mills in Pue ae Ak Crested Butte mines began shutting down. In 1952, the last mine (Big Mine) was closed and Crested Butte s mining days were essentially over. At that time, many families were forced to leave town to seek work. The few who remained, saw the Phens ing of the Keystone Mine up Kebler Pass and were able to continue mining. But this was sporadic, and the"

A big blunder
"Frank S. Hoag and Robert H. Rawlings. The Sunday Chieftain."

AG Update Special Inventory Report Cattle, Sheep, Hogs, Chickens with 1993 Annual Crop Summary Special Issue (1993)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. February 10, 1994."

AG Update Special Inventory Report Cattle, Sheep, Hogs, Chickens with 1996 Annual Crop Summary Special Issue (1996)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. February 20, 1997."

AG Update Special Inventory Report Cattle, Sheep, Hogs, Chickens with 1997 Annual Crop Summary Special Issue (1997)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. February 1998."

AG Update Special Inventory Report Cattle, Sheep, Hogs, Chickes with 1994 Annual Crop Summary Special Issue (1994)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. February 9, 1995."

AG Update Special Inventory Report Cattle, Sheep, Hogs, Chickes with 1995 Annual Crop Summary Special Issue (1995)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. March 1996."

AG Update Special Issue (1994)
"Charles A. Hudson, Lance A. Fretwell. USDA/Colorado Dept. of Agriculture. February 10, 1994."

AG Update – Special Issue 2003 Annual Crop and Livestock Summary (2003)
"R. Renee Picanso. USDA/Colorado Dept. of Agriculture. February 24, 2004."

AN ECONOMIC EVALUATION FOR SMALL SCALE THERMAL PLASMA WASTETO-ENERGY SYSTEMS
"I.J. van der Walt1, J.T. Nel1, D. Glasser2, D. Hildebrandt2, L. Ngubevana2 1 The South African Nuclear Energy Corporation SOC Ltd. (Necsa), Elias Motsoaledi Street Ext., (Church Street West), Pelindaba, Brits Magisterial District, North-West Province, South Africa. 2 University of South Africa,Chemical Engineering Department, Cnr. Christiaan de Wet Road & Pioneer Avenue, Florida, Gauteng, South Africa Abstract: A combined small scale plasma-gasification system, developed by Necsa, and a Fischer-Tropsch syngas system, developed by Wits and Unisa, is being developed in order to determine the economic viability of such a system. A techno-economic model was developed and different scenarios will be discussed to describe the influence of different waste types and industry-specific influences. Keywords: Plasma gasification, plasma economic viability, small scale Fischer Tropsch. Background Experimentswith various types of biomass proved Plasma gasification that when different feed materials are gasified by The process of plasma gasification of municipal athermal plasma, the product mixture can be and other types of waste is not new [2-5]. changed by manipulating the plasma conditions in Commercial systems are available worldwide and order to generate a good quality syngas. The many plasma research projects are currently being compressed syngas is purified from any impurities conducted to cater for the treatment of various and in one integrated process Fischer-Tropsch (FT) types of waste.Unfortunately, the different waste"

ANNUAL STATUS REPORT On The Uranuim Mill Tailings Remedial Action Program
"Technical report (1988). Covers Gunnison, Colorado, Ambrosia Lake. Topics: uranium mill tailings remedial action, radioactive materials stabilization, vicinity properties, remedial action. Agencies: U.S. Department of Energy, Nuclear Regulatory Commission, Environmental Protection Agency. Cites 24 external works."

ASCS News (1980)
"Keith L. Dossey. Montrose-Gunnison County Executive Director. February 21, 1980."

Abstract of Assessments and Levies 1998 (1998)
"Judith M. Smith. 1998."

Acquire Smock and Thomas ranches on Lake Fork of the Gunnison River? (1994)
"Gary Sprung. Blue Mesa Mitigation Committee. September 5, 1994."

Acreage Limitations Revisited: The NRDC v. Beard Settlement (1993)
"Edited by: Rodney T. Smith and Roger Vaughan. Water Strategist. October 1993."

Action Alert- Western Organization of Resources (2008)
"Sara Kendall. Western Organization for Resource Councils. 5/12/ 2008."

Administrative Appeal of Forest Supervisor’s Approval of Homestake Mining Company’s Pitch Project Operating Plan (1979)
"Colorado Mountain Club and many others. 1979."

Affordable Housing (2004)
"Ralph E. Clark III. August 21, 2004."

Affordable Housing Employee Survey Results (2005)
"Crested Butte Mountain Resort. October 5, 2005."

After Subsidence Mount Emmons (Drawings)
"Prepared form materials supplied by Comark Design Systems at the request of AMAX Inc."

Aftermath of Congressional Water War: Restructuring the CVP (1993)
"Edited by: Rodney T. Smith and Roger Vaughan. Water Strategist. January 1993."

Agenda Item 8, June 24, 1996 Board Meeting- Miscellaneous Matters- Open Meetings Law House Bill 96-1314 (1996)
"Tyler Martineau. Upper Gunnison River Water Conservancy District. June 14, 1996. ?"

Agreement for the Subordination of Wayne N. Aspinall Unit Water Rights Within the Gunnison Basin (1998)
"Agreement among the United States of America, The CO state engineer, The CO River Water Conservation District, and the Upper Gunnison River Water Conservation District. December 24th 1998"

Agricultural Land Conversion in Colorado A Preliminary Report (1995)
"Colorado Department of Agriculture and the Governor’s Task Force on Agricultural Lands. March 1995."

Agriculture Eroding in Ark Valley
"Chris Woodka. The Pueblo Chieftain."

Agriculture as a Tool for Rural Development Workshop Proceedings (2003)
"Kate Clancy, Shelly Grow, & Lydia Oberholtzer. Henry A. Wallace Center for Agriculture & Environmental Policy. April 2003."

Alamosa River Watershed Project
"Jeff Stern. Valley Voice."

Alaska Newsletter: A Publication of the Alaska Chapter of the Sierra Club (1979)
"Sierra Club. October 1, 1979."

Alliance for Clean Electricity
"DRAFT Short-term plan for the Alliance for Clean Electricity 1. Mission: The Alliance for Clean Electricity (ACE) exists to encourage the Gunnison County Electric Association (GCEA) to invest in energy efficiency and local renewable energy resources to help meet the electricity needs of the Upper Gunnison Valley and to use its position on the Tri-State Board to advocate for clean energy resources. We actively seek to work with community organizations and individuals to facilitate communications regarding energy/electricity issues in the valley. 2. Activities and goals: Consistent with its mission, ACE will engage in the following activities.and strive to achieve the following goals: a. Local IRP: ACE will continue its advocacy that GCEA engage in local resource planning (IRP), focusing on local energy efficiency (EE) and renewable energy (RE) with the goal that GCEA’s plan be substantially completed by the end of 2008. b. Local EE and RE: Regardless of GCEA’s disposition of our IRP request, ACE will work with GCEA to substantially improve GCEA’s programs to encourage EE and RE with a goal to be established by the IRP or, if GCEA does not ‘carry out IRP, by May 31, 2008. ' ¢. Tri-State: ACE will encourage GCEA to urge Tri-State to review its existing resource plan and to integrate new, clean-energy resources into its plan with the goal that _ Tri-State’s new plan contains no new pulverized coal capacity and contains significantly more EE and RE."

Alliance for Clean Electricity (ACE) September 4, 2007 Meeting Notes (2007)
"« Mission as given by Bruce Driver: Promote investment in local energy and renewable resources in the Gunnison Valley through actions of the GCEA. o Various members want to include language: dependable, reliable, “to help GCEA meet goals of...”, negawatts, model green coop, cost-effectiveness, clean, local resources, education * Our relation to CROP/ORE o Participate in ORE’s January forum oO Meet with Gesa at next meeting so group can lean what ORE is doing and where we could fit in. o ACE will act as advocates while ORE will carry out implementation of programs (this came from Brittney’s meeting with Gesa & Allison) o George Sibley discussed ORE’s work in the valley to give group some idea of existing programs (CROP) = Valley-wide energy plan o It was discussed whether the group should focus on the entire valley or just GCEA which would exclude Gunnison. It was determined, for now, that the group will focus only on GCEA and working with it. o Working with the Board of County Commissioners was also discussed. = Follow up with GCEA o It was decided that some group members will attend the September GCEA"

Allocation of Forest Management Practices on Public Lands (1974)
"James. M. Turner. Ann. Reg. Sci. 8(2): 72-88. June 1974. ?"

Alternative G for the East River Planning Unit of the Gunnison National Forest, Colorado (1977)
"Gunnison Group of the Sierra Club. March 21, 1977."

Amax Inc.- Mount Emmons
"AMAX Inc., the company that is conducting explora- tion drilling for molybdenum on Mt. Emmons in Gunni- son County, Colo., is a natural resources and mineral development company with widely diversified interests. Those interests include molybdenum, tungsten, nickel, cobalt, aluminum, copper, lead, zinc, cadmium, iron ore, metal powders, precious metals, coal, agricultural chemicals, natural gas, petroleum, forest products and other natural resources. Its operations are worldwide in scope. The parent company was The American Metal Com- pany, Limited, which was incorporated in 1887. In 1957 it merged with Climax Molybdenum Company and became American Metal Climax Inc. AMAX Inc. was adopted as the corporation's legal name in 1974. The Climax Molybdenum Company was formed in 1916 to develop a molybdenite deposit in central Colorado near Leadville. Construction at the Climax Mine began in May, 1917, and one year later Climax Molybdenum was mining and milling 250 tons of ore"

Amax Trial Update — Closing Arguments (1999)
"High Country Citizens Alliance. August 4, 1999."

Amendment No. 17 (1988)
"Jack Weissling. Pike and San Isabel National Forests and Comanche and Cimarron National Grasslands. October 1988."

Amendment Number 13 (1988)
"Jack Weissling. Pike and San Isabel National Forests and Comanche and Cimarron National Grasslands. October 1988."

Amendment Number 14 (1988)
"Jack Weissling. Pike and San Isabel National Forests and Comanche and Cimarron National Grasslands. October 1988."

Amendment Number 15 (1988)
"Jack Weissling. Pike and San Isabel National Forests and Comanche and Cimarron National Grasslands. October 1988."

Amendment Number 16 (1988)
"Jack Weissling. Pike and San Isabel National Forests and Comanche and Cimarron National Grasslands. October 1988."

Amendment Number 18 (1988)
"Jack Weissling. October 1988."

Amendment Number 19 (1988)
"Jack Weissling. October 1988."

American Institute of Architects Regional Urban Design Assistance Gunnison Country
"community plan (1970-1976). Covers Gunnison, Gunnison County, Crested Butte. Topics: Regional Urban Design Assistance, ranching, tourism, mining. Agencies: American Institute of Architects, Town Administration, Gunnison County. Cites 4 external works."

American Institute of Architects Regional Urban Design Assistance Team Gunnison Country (1976)
"American Institute of Architects. September 1, 1976."

America’s Waters: A New Era of Sustainability (1992)
"The Natural Resources Law Center. December 1992."

An Analysis of Colorado and Federal Law in Contrast to the “Report of the Long’s Peak Working Group” (1993)
"Gregg Hobbs. Hobbs, Trout and Raley, P.C. February 17, 1993."

An Analysis of Growth and Development in the Unincorporated Portions of the East River Valley and Gunnison Urban Area (1997)
1997

An Ecological Basis for Beaver Management in the Rocky Mountain Region
"Lee E. Yeager. Cooperative Wildlife Research Unit, Colorado State University."

An Economic Analysis of State Aid to School Districts in Colorado (1966)
"Don Seastone. 1966"

An Economic Overview Gunnison County (1972)
"Economic Development Department United Banks of Colorado, Inc. November 1972."

An Illustrated Guide to the Proposed Threatened and Endangered Plant Species in Colorado (1978)
"By: Scott Ellis, Patricia Fay Published April 1978. U.S. Department of the Interior"

An Integrated Wastewater Treatment and Reuse System to Enhance Wildlife and Other Estuarine Values
"George H. Allen, Robert A. Gerheart, and John R. Williams. Western Association of Fish and Wildlife Agencies and Western Division of American Fisheries Society. ? ?"

Analysis of Chemicals Used in Natural Gas Development and Delivery in Colorado (2007)
"Dr. Mary Bachran. March 29, 2007."

Analysis of the Costs and Financial Analysis Prepared by Amax for the Mount Emmons Project
"Robert C. Steckley, Jim F. Lemons Jr. Minerals Availability Field Office United States Bureau of Mines."

Annotated Bibliography on Consensus, Consensus Building and Decision Making
"Elizabeth Cove, Earlham College."

Annual Arrangements: Improving Coordination of Community Development Programs (1973)
"US Departmnet of Housing and Urban Development. May 1973."

Answers to Questions about Nuclear Power Vote "No" on #3 (1976)
"Coloradans Against Amendment #3. June 1976."

Antelope Creek Area (1980)
"James P. Walsh. Amax Environmental Services Inc. February 1980. Map."

Appendix 1 Colorado Natural Areas Act (1988)
"Carl B. Bledsoe, Ted L. Strickland, Lee C. Bahrych, Joan M. Albi, Roy Romer. State of Colorado. March 23, 1988."

Appendix 2 List of Designated Colorado Natural Areas, List of Registered Colorado Natural Areas, List of Identified Colorado Natural Areas (1996)
"October 22, 1996."

Appendix 3 Criteria for Determining Colorado Natural Areas (1993)
"Guidelines for the Identification, Registry and Designation of Colorado Natural Areas July, 1993 The Colorado Natural Areas Program (CNAP) was created by an act of the Colorado Legislature in 1977 and reauthorized in 1988. The Colorado Natural Areas Act, as set forth under C.R.S. 33-33-101 et seq. (1988), directs the Board of Parks and Outdoor Recreation (Parks Board) to administer the Colorado Natural Areas Program, with the advice of the Colorado Natural Areas Council (Council). Under the Act, CNAP’s mandate is to (1) identify, evaluate and protect examples of Colorado’s natural heritage; (2) maintain an inventory and registry of qualified natural areas; and. Gs establish a system of designated natural areas. A “natural area” as defined. under the Act is “a physical and biological area which either retains or has reestablished its natural character; although. it need. not be. completely undisturbed, and which typifies native vegetation and associated biological and geological . features or provides habitat for rare or endangered animal or plant species or includes geologic or other natural features of scientific or educational value\". Guidelines were developed early in the history of the:Program. to ensure that the registry and designation process remains orderly and open. Changes to the guidelines are incorporated when deemed appropriate a and d necessary by the Council and the Parks Board. PROCEDURE:"

Appendix 4 Colorado Natural Areas Council, Colorado Natural Areas Program Staff (1997)
"Colorado Natural Areas Council. January 1997. August 1996."

Appendix 5 Example: Articles of Designation Elephant Rocks Natural Area (1996)
"Jim Krugman, Laurie A. Mathews, Lee Shropshire. Colorado Natural Areas Program, Division of Parks and Ourdoor Recreation Deporatment of Natural Resources, State of Colorado. May 29, 1996."

Application for Land Use Change Permit Gunnison County, Colorado Sketch Plan (1990)
"Uranium Mill Tailings Remedial Action Project. October 1990."

Application of Monitoring for Producers
"Dr. Roy Roath. Rangeland Ecosystem Science Department Colorado State University."

Area Guide News Articles (1977)
"Craig W. Rupp, David E. Herrick, Vern Hamre, Robert H. Torheim, Roger R. Bay. USDA Forest Service. February 1977."

Area Guides News (1977)
"USDA Forest Service. 1977."

Areawide Conservation Planning Primer (1998)
"USDA/NRCS. November 1998."

Arrogance personified
"Frank S. Hoag and Robert H. Rawling. The Pueblo Chieftain."

Articles in The Property Report (2001)
"Jim Carlton, Peter Grant, Will Pinkston, Motoko Rich. The Wall Street Journal. December 19, 2001."

Aspen Planning Unit
"Pitkin County Commissioners. USDA Forest Service."

Aspen Restoration and Salvage notes Mancos-Dolores R.D. SJNF (2008)
"M. Krabath. USDA Forest Service. May 8, 2008."

Aspinall Depletion Allowance and Gunnison Basin Augmentation Agreement (1997)
"Letter from Tyler Martineau to Dick Bratton Organization: Upper Gunnison River Water Conservancy District Date: August 25th 1997 ?"

Aspinall Unit Mitigation – Stream front public access (1995)
"Tyler Martineau. July 28, 1995."

Aspinall Unit Operation Coordination Meeting (2002)
"Meeting content concerning operations for reservoirs in the region. Includes graphical data sets of reservoir inflow. August 20th 2002"

Aspinall Unit Operations Assessment (1989)
"Notations -- acre-feet or ac-ft expressed as whole nuaher - 6,479 : o- cubic feet per second or cfs expressed with tenths - 567.8 : Constants: I cfs for a aonth equals 60.16 acre-feet sas Part 2 --- WATER RECEIVED INTO ASPINALL UNIT -= DRY YEAR - 1909 Actual for 1987 ocr Noy DEC JAN FEB mar | APR Monthly Inflows in average cfs for aonth - USDOE (1994) SLOA Electric Pover Marketing, DEIS, pp. C-34 - C 37 into Blue Mesa 492.0 448.0 383.0 439.0 431.0 729.0; = 1,622.0 into Morrow Point 38.0 37.0 37.0 13.0 24.0 66.0 } 207.0 into Crystal 186.0 98.0 92.0 73.0 46.0 99.0 | 224.0 average total cfs inflow ; to Aspinall Unit for aonth 714.0 583.0 514.0 497.0 501.0 694.0 } 2,053.0 inflows in acre-feat 43,089 35, 085 30,933 29,909 30,156 53,801 ' 123,550 cuasulative inflow in ac-ft 43,089 78,178 = 109,108 = 139,016 149, 166 222,967 346,516 see Part 3 ~~ WATER RELEASES FROM ASPINALL UNIT -- DRY YEAR - 1999 Evaporation in cfs - USER (1994) SLCA Electric Powar Marketing - DEIS$ pp. C-34 - C-35, fron Blue Mesa 6.4 3.2 2.0 2.0 2.8 6.2 10.8 froa Morrow Point froa Crystal Total evaporation in ac-ft 35 193 120 120 169 373 650 Released in cfs from Crystal - USDOE (1994) SLCA Electric Power Marketing, p. C-35."

Assignment of Water Rights 1962 (1962)
"Water rights document concerning water projects of Colorado A.Allan Brown October 23rd 1965"

At the recent Board meeting of the Gunnison County Electric Association (GCEA) on August 28, there was a brief mention of how planning for future local electrical power requirements might be addressed through use of local resources, and that past efforts to review such options concluded that they were quite limited. (2007)
"Ralph E. Clark III. September 12, 2007."

Atmospheric Carrying Capacity of the Gunnison Valley, Colorado
"Jeff Beach.?Colorado State University."