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2019 Meander C and Meander Z floodplain groundwater chemistry from the East River Watershed, CO, USA

Creators: Patricia Fox, Christian Dewey, Cam Anderson, Marco Keiluweit, Peter Nico
Year: 2025
DOI: 10.15485/2550665
License: CC-BY 4.0
Location: The East River (ER) is a snow‐dominated, headwater basin of the Upper Colorado River Basin (UCRB) located in the western United States. The ER is the designated testbed of Lawrence Berkeley National Laboratory's Watershed Function Scientific Focus Area (WFSFA). Through WFSFA, observational networks have been established to measure stream discharge and precipitation chemistry. The ER is considered representative of many snow‐dominated headwaters of the Rocky Mountains. The study domain encompasses nearly 85 square km, a 1.4‐km vertical drop in elevation (4,120 to 2,760 m) and pristine alpine, subalpine, montane, and riparian ecosystems. The ER contains high‐energy mountain streams to low‐energy meandering floodplains and is eroding primarily into the Cretaceous, carbon‐rich, marine shale of the Mancos Formation. Additional metadata on specific locations within the watershed are provided in the following related data package: Varadharajan C. et al. (2023) doi:10.15485/1660962
Temporal extent: 2019-05-15 to 2019-10-23
Bounding box: 38.880°N to 39.034°N, -107.050°W to -106.880°W
Publisher: ESS_DIVE
Tags: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY, river corridor, aqueous geochemistry, ESS-DIVE File Level Metadata Reporting Format, ESS-DIVE CSV File Formatting Guidelines Reporting Format, CATEGORICAL:NONE dissolved inorganic carbon, dissolved organic carbon, anions, cations, pH, Alpine & Subalpine Ecology, Hydrology & Watersheds, Snow & Ice, Groundwater, Geology & Tectonics, Geochemistry & Isotopes, Weather & Atmospheric Science, Gunnison Basin, Research Programs

Description

This dataset includes groundwater geochemistry data from floodplain piezometers collected as a part of the Watershed Function Scientific Focus Area (SFA) located in the Upper Colorado River Basin. The data were collected in order to investigate the role of hyporheic exchange and other river corridor processes on riverine export of solutes. Data includes samples from two intra-meander zones: Meander C, in the Pumphouse vicinity, and Meander Z, just upstream of the confluence with Brush Creek. Floodplain piezometers installed along two transects across Meander C (MCP and MCB wells) and Meander Z (MZA and MZB wells) were sampled on daily to weekly time scales during summer-fall 2019. Some river water grab samples are also included. Data includes in-field measurements (pH, electrical conductivity [EC], oxidation reduction potential [ORP], dissolved oxygen [DO], and groundwater level) along with laboratory measurements (dissolved inorganic carbon [DIC], dissolved organic carbon [DOC], metals and major cations, anions [chloride, sulfate, nitrate], and dissolved ammonium). Files are included in this dataset include: sample locations and depths in both a kmz file which can be opened in Google Earth and a csv file, aqueous geochemistry data in a csv files for Meander C and Meander Z, and analytical detection limits in a csv file. This dataset also 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.

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