Concepts

The bidirectional exchange of water between groundwater aquifers and surface water bodies including streams, with groundwater contributing baseflow to streams and streams providing recharge to groundw...

The study of water cycling processes in mountainous terrain, including complex interactions between snowpack dynamics, topography, vegetation, and subsurface water storage

The degree to which water movement is facilitated or impeded through connected flow paths in subsurface sediments

Shallow subsurface zone where river and groundwater mix, serving as a source or sink of reactive nitrogen depending on water residence times and nitrogen transformation rates

Coupled modeling approach simulating surface and subsurface hydrologic processes including groundwater flow and particle tracking

Accounting framework where annual discharge equals precipitation minus evapotranspiration minus storage changes

The relationship between solute concentrations and discharge in streams, widely used as a metric for interpreting interaction of hydrological processes, chemical transport, and mineral reactions in wa...

The division of water flow between different hydrological pathways including surface flow, shallow subsurface flow, and deep groundwater flow

Redox-stratified and temporally dynamic sediments in river corridors where biological processes mediate sulfur transformations

Concentration-discharge pattern where solute concentrations remain relatively constant across flow conditions, indicated by C-Q slope near zero

Statistical approach to quantify proportional contributions of different water sources to mixed samples using tracer concentrations

The amount of water stored in soil and subsurface compartments that responds dynamically to hydrological inputs and outputs

The downward movement of water from surface water to groundwater, occurring through infiltration and percolation processes and declining under warming due to increased evapotranspiration

Different trajectory of C-Q relationships during rising and falling limbs of hydrographs that indicate differences in timing of hydrological response from surface and subsurface compartments

A modeling approach where downslope flow responds to rainfall or snowmelt recharge through accommodating new recharge within a rising water table within a thicker and more transmissive saturated zone

Subsurface conditions where chemical transport is limited to diffusion rather than advection, creating oxygen-depleted anoxic conditions

The movement of eroded soil and rock particles by water flow

Overland flow that occurs when rainfall intensity exceeds the rate at which water can enter the soil

Unsaturated zone above the water table where pore spaces contain both air and water

The integrated biogeochemical, hydrological, and ecological processes that control water, energy, and nutrient cycling within a watershed