Colorado River Basin Focus Area Study Completed
As one of several Focus Area Studies within the USGS National Water Census (NWC), the USGS has completed a 3-year study of water availability and use in the Colorado River Basin.
National Water Census • Colorado River Basin • Evapotranspiration • Snowpack • Water Use • Groundwater Discharge
The Colorado River is about 1,450 miles long, with headwaters in Colorado and Wyoming, and eventually flows across the international border into Mexico. The drainage basin area of about 246,000 square miles includes all of Arizona, and parts of California, Colorado, New Mexico, Nevada, Utah, and Wyoming. The Colorado River is an important water resource for areas outside of the basin, including Denver, Salt Lake City, Albuquerque, Los Angeles, and San Diego for public (municipal) supply, and the Imperial Valley in California for agricultural water supplies. The river and its tributaries provide water to nearly 40 million people, both within and outside of the basin, and irrigates nearly 5.5 million acres of agricultural lands (Colorado River Basin Water Supply and Demand Study (usbr.gov, 2012)).
Water management is governed by a complex system of international treaties, interstate compacts, and Supreme Court decrees. The Bureau of Reclamation (Reclamation) plays a major role in the control and distribution of surface water within the Colorado River Basin through management of large Federal water projects like Glen Canyon Dam (Lake Powell) and Hoover Dam (Lake Mead).
In discussions with Reclamation and its partners, the Focus Area Study identified several components of the water budget in the Colorado River Basin for in-depth focused study.
National Water Census • Colorado River Basin • Evapotranspiration • Snowpack • Water Use • Groundwater Discharge
Below are related science components of the Colorado River Basin Focus Area Study.
National Modeled Water Atlas
Below are publications associated with the Colorado River Basin Focus Area Study.
Continuous estimation of baseflow in snowmelt-dominated streams and rivers in the Upper Colorado River Basin: A chemical hydrograph separation approach
Geospatial database of estimates of groundwater discharge to streams in the Upper Colorado River Basin
Actual evapotranspiration (water use) assessment of the Colorado River Basin at the Landsat resolution using the operational simplified surface energy balance model
WaterSMART-The Colorado River Basin focus-area study
Evaluation of SNODAS snow depth and snow water equivalent estimates for the Colorado Rocky Mountains, USA
- Overview
As one of several Focus Area Studies within the USGS National Water Census (NWC), the USGS has completed a 3-year study of water availability and use in the Colorado River Basin.
National Water Census • Colorado River Basin • Evapotranspiration • Snowpack • Water Use • Groundwater Discharge
The Colorado River is about 1,450 miles long, with headwaters in Colorado and Wyoming, and eventually flows across the international border into Mexico. The drainage basin area of about 246,000 square miles includes all of Arizona, and parts of California, Colorado, New Mexico, Nevada, Utah, and Wyoming. The Colorado River is an important water resource for areas outside of the basin, including Denver, Salt Lake City, Albuquerque, Los Angeles, and San Diego for public (municipal) supply, and the Imperial Valley in California for agricultural water supplies. The river and its tributaries provide water to nearly 40 million people, both within and outside of the basin, and irrigates nearly 5.5 million acres of agricultural lands (Colorado River Basin Water Supply and Demand Study (usbr.gov, 2012)).
Water management is governed by a complex system of international treaties, interstate compacts, and Supreme Court decrees. The Bureau of Reclamation (Reclamation) plays a major role in the control and distribution of surface water within the Colorado River Basin through management of large Federal water projects like Glen Canyon Dam (Lake Powell) and Hoover Dam (Lake Mead).
In discussions with Reclamation and its partners, the Focus Area Study identified several components of the water budget in the Colorado River Basin for in-depth focused study.
National Water Census • Colorado River Basin • Evapotranspiration • Snowpack • Water Use • Groundwater Discharge
- Science
Below are related science components of the Colorado River Basin Focus Area Study.
National Modeled Water Atlas
The National Modeled Water Atlas will deliver routinely updated water availability information in the United States. - Publications
Below are publications associated with the Colorado River Basin Focus Area Study.
Filter Total Items: 17Continuous estimation of baseflow in snowmelt-dominated streams and rivers in the Upper Colorado River Basin: A chemical hydrograph separation approach
Effective science-based management of water resources in large basins requires a qualitative understanding of hydrologic conditions and quantitative measures of the various components of the water budget, including difficult to measure components such as baseflow discharge to streams. Using widely available discharge and continuously collected specific conductance (SC) data, we adapted and appliedAuthorsMatthew P. Miller, David D. Susong, Christopher L. Shope, Victor M. Heilweil, Bernard J. StolpGeospatial database of estimates of groundwater discharge to streams in the Upper Colorado River Basin
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 contributAuthorsAdriana Garcia, Melissa D. Masbruch, David D. SusongActual evapotranspiration (water use) assessment of the Colorado River Basin at the Landsat resolution using the operational simplified surface energy balance model
Accurately estimating consumptive water use in the Colorado River Basin (CRB) is important for assessing and managing limited water resources in the basin. Increasing water demand from various sectors may threaten long-term sustainability of the water supply in the arid southwestern United States. We have developed a first-ever basin-wide actual evapotranspiration (ETa) map of the CRB at the LandsAuthorsRamesh K. Singh, Gabriel B. Senay, Naga Manohar Velpuri, Stefanie Bohms, Scott Russell L, James P. VerdinWaterSMART-The Colorado River Basin focus-area study
Increasing demand for the limited water resources of the United States continues to put pressure on water-resource agencies to balance the competing needs of ecosystem health with municipal, agricultural, and recreational uses. In 2007, the U.S. Geological Survey (USGS) identified a National Water Census as one of six pivotal future science directions for the USGS in the following decade. The enviAuthorsBreton W. BruceEvaluation of SNODAS snow depth and snow water equivalent estimates for the Colorado Rocky Mountains, USA
The National Weather Service's Snow Data Assimilation (SNODAS) program provides daily, gridded estimates of snow depth, snow water equivalent (SWE), and related snow parameters at a 1-km2 resolution for the conterminous USA. In this study, SNODAS snow depth and SWE estimates were compared with independent, ground-based snow survey data in the Colorado Rocky Mountains to assess SNODAS accuracy at tAuthorsDavid W. Clow, Leora Nanus, Kristine L. Verdin, Jeffrey Schmidt