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Geospatial database of estimates of groundwater discharge to streams in the Upper Colorado River Basin

July 18, 2014

The U.S. Geological Survey, as part of the Department of the Interior’s WaterSMART (Sustain and Manage America’s Resources for Tomorrow) initiative, compiled published estimates of groundwater discharge to streams in the Upper Colorado River Basin as a geospatial database. For the purpose of this report, groundwater discharge to streams is the baseflow portion of streamflow that includes contributions of groundwater from various flow paths. Reported estimates of groundwater discharge were assigned as attributes to stream reaches derived from the high-resolution National Hydrography Dataset. A total of 235 estimates of groundwater discharge to streams were compiled and included in the dataset. Feature class attributes of the geospatial database include groundwater discharge (acre-feet per year), method of estimation, citation abbreviation, defined reach, and 8-digit hydrologic unit code(s). Baseflow index (BFI) estimates of groundwater discharge were calculated using an existing streamflow characteristics dataset and were included as an attribute in the geospatial database. A comparison of the BFI estimates to the compiled estimates of groundwater discharge found that the BFI estimates were greater than the reported groundwater discharge estimates.

Citation Information

Publication Year 2014
Title Geospatial database of estimates of groundwater discharge to streams in the Upper Colorado River Basin
DOI 10.3133/ds851
Authors Adriana Garcia, Melissa D. Masbruch, David D. Susong
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Data Series
Series Number 851
Index ID ds851
Record Source USGS Publications Warehouse
USGS Organization Utah Water Science Center

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