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Full-Text Articles in Hydrology
Using Cumulative Potential Recharge For Selection Of Gcm Projections To Force Regional Groundwater Models: A Nebraska Sand Hills Example, Nathan R. Rossman, Vitaly A. Zlotnik, Clinton Rowe
Using Cumulative Potential Recharge For Selection Of Gcm Projections To Force Regional Groundwater Models: A Nebraska Sand Hills Example, Nathan R. Rossman, Vitaly A. Zlotnik, Clinton Rowe
Department of Earth and Atmospheric Sciences: Faculty Publications
Groundwater recharge (GR) controls vegetation, geomorphology, groundwater, wetlands and surface flow, and ultimately, the ecology and economics of semi-arid regions. Therefore, it is critical to assess hydroclimate model scenarios and the uncertainty in future GR to force regional groundwater models. We use basic statistics of downscaled Global Circulation Model (GCM)-projected cumulative potential GR (GRp) for selecting representative projections. Cumulative GRp is the net recharge (difference between precipitation (P) and evapotranspiration (ET) rates) over the projection period. The approach is illustrated with an example in the Nebraska Sand Hills (NSH), the largest dune …
An Approach To Hydrogeological Modeling Of A Large System Of Groundwater-Fed Lakes And Wetlands In The Nebraska Sand Hills, Usa, Nathan Rossman, Vitaly A. Zlotnik, Clinton Rowe
An Approach To Hydrogeological Modeling Of A Large System Of Groundwater-Fed Lakes And Wetlands In The Nebraska Sand Hills, Usa, Nathan Rossman, Vitaly A. Zlotnik, Clinton Rowe
Department of Earth and Atmospheric Sciences: Faculty Publications
The feasibility of a hydrogeological modeling approach to simulate several thousand shallow groundwater-fed lakes and wetlands without explicitly considering their connection with groundwater is investigated at the regional scale (~40,000 km2) through an application in the semi-arid Nebraska Sand Hills (NSH), USA. Hydraulic heads are compared to local land-surface elevations from a digital elevation model (DEM) within a geographic information system to assess locations of lakes and wetlands. The water bodies are inferred where hydraulic heads exceed, or are above a certain depth below, the land surface. Numbers of lakes and/or wetlands are determined via image cluster analysis …