Water Availability and Use Science Program
Science and Products
Filter Total Items: 23
Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Water Use
Water use estimates and water returns for the ACF Basin were estimated and compiled by category and location during 2010. Categories included public supply, self-suppled domestic, self-supplied commercial, industrial, mining, agricultural (crop irrigation, livestock, and aquaculture), and thermoelectric-power generation. Methods for estimating irrigation water use were compared and evaluated...
Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Estimating Streamflow
A hydrologic model that simulates streamflow conditions in the ACF Basin was constructed using the Precipitation Runoff Modeling System. The model simulated development by including withdrawals and returns, interbasin transfers, storage in unmanaged reservoirs, and impervious surface.
Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Groundwater/Surface-Water Interactions
In the lower Chattahoochee and Flint River Basin, a groundwater flow model was developed to simulate the effects of groundwater withdrawals on streamflow. This model was linked with the streamflow model to improve estimates of baseflow conditions during critical times, such as droughts.
Colorado River Basin Focus Area Study: Evapotranspiration
New USGS-developed, remote-sensing based approaches were used to quantify agricultural irrigation water consumption on a field-by-field scale. The work produced the first ever Colorado River Basin-wide, 100-m scale actual ET estimate (2010) using Landsat imagery.
Colorado River Basin Focus Area Study: Snowpack Hydrodynamics
The Focus Area Study examined factors affecting snowpack distribution, snowmelt, and losses of snowpack water due to sublimation in the Upper Colorado River Basin. Also, as part of the FAS, the USGS has developed methods to make physical measurements of snowpack sublimation.
Colorado River Basin Focus Area Study: Water Use
Water-use data were compiled as annual total withdrawals by source and aggregated to 8-digit Hydrologic Unit Code watersheds from 1985 to 2010 in five year intervals. The new compilation allows for an evaluation of water-use trends in the Colorado River Basin and the effect of use on the water budget.
Colorado River Basin Focus Area Study: Groundwater discharge to streams
Methods were developed in the CRB FAS to estimate groundwater discharge to streams in the upper Colorado River Basin (UCBR) using in-stream water-quality data. Results indicate groundwater discharge to streams contributes an average of 48 percent of total streamflow in the UCRB.
Delaware River Basin Focus Area Study: Process-Based Streamflow Modeling
The Water Availability Tool for Environmental Resources provides a decision support system to examine different land-cover forecasts and climate projections using physical aspects of the basin that will remain unchanged, like topography and soil properties, to estimate streamflow for ungaged streams.
Delaware River Basin Focus Area Study: Water Use
Water-use data were compiled or estimated for 8-digit and 12-digit Hydrologic Unit Code watersheds for 2010. Water withdrawal, interbasin transfers, return flow, and hydroelectric power generation release data were compiled for 11 water-use categories.
Delaware River Basin Focus Area Study: Ecological Flow Science
The Riverine Environmental Flow Decision Support System (REFDSS), models of river temperature, and evaluation of methods of determining Habitat Suitability Criteria were all products of the ecological-flow science component of the Delaware Focus Area Study.
Colorado River Basin Focus Area Study
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.
Science and Products
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Filter Total Items: 23
Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Water Use
Water use estimates and water returns for the ACF Basin were estimated and compiled by category and location during 2010. Categories included public supply, self-suppled domestic, self-supplied commercial, industrial, mining, agricultural (crop irrigation, livestock, and aquaculture), and thermoelectric-power generation. Methods for estimating irrigation water use were compared and evaluated...Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Estimating Streamflow
A hydrologic model that simulates streamflow conditions in the ACF Basin was constructed using the Precipitation Runoff Modeling System. The model simulated development by including withdrawals and returns, interbasin transfers, storage in unmanaged reservoirs, and impervious surface.Apalachicola-Chattahoochee-Flint River Basin Focus Area Study: Groundwater/Surface-Water Interactions
In the lower Chattahoochee and Flint River Basin, a groundwater flow model was developed to simulate the effects of groundwater withdrawals on streamflow. This model was linked with the streamflow model to improve estimates of baseflow conditions during critical times, such as droughts.Colorado River Basin Focus Area Study: Evapotranspiration
New USGS-developed, remote-sensing based approaches were used to quantify agricultural irrigation water consumption on a field-by-field scale. The work produced the first ever Colorado River Basin-wide, 100-m scale actual ET estimate (2010) using Landsat imagery.Colorado River Basin Focus Area Study: Snowpack Hydrodynamics
The Focus Area Study examined factors affecting snowpack distribution, snowmelt, and losses of snowpack water due to sublimation in the Upper Colorado River Basin. Also, as part of the FAS, the USGS has developed methods to make physical measurements of snowpack sublimation.Colorado River Basin Focus Area Study: Water Use
Water-use data were compiled as annual total withdrawals by source and aggregated to 8-digit Hydrologic Unit Code watersheds from 1985 to 2010 in five year intervals. The new compilation allows for an evaluation of water-use trends in the Colorado River Basin and the effect of use on the water budget.Colorado River Basin Focus Area Study: Groundwater discharge to streams
Methods were developed in the CRB FAS to estimate groundwater discharge to streams in the upper Colorado River Basin (UCBR) using in-stream water-quality data. Results indicate groundwater discharge to streams contributes an average of 48 percent of total streamflow in the UCRB.Delaware River Basin Focus Area Study: Process-Based Streamflow Modeling
The Water Availability Tool for Environmental Resources provides a decision support system to examine different land-cover forecasts and climate projections using physical aspects of the basin that will remain unchanged, like topography and soil properties, to estimate streamflow for ungaged streams.Delaware River Basin Focus Area Study: Water Use
Water-use data were compiled or estimated for 8-digit and 12-digit Hydrologic Unit Code watersheds for 2010. Water withdrawal, interbasin transfers, return flow, and hydroelectric power generation release data were compiled for 11 water-use categories.Delaware River Basin Focus Area Study: Ecological Flow Science
The Riverine Environmental Flow Decision Support System (REFDSS), models of river temperature, and evaluation of methods of determining Habitat Suitability Criteria were all products of the ecological-flow science component of the Delaware Focus Area Study.Colorado River Basin Focus Area Study
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. - News