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Discover and download images and data visualizations that support the National and Regional Water Availability Assessments.
A stacked bar chart showing the relative sources of Nitrogen across hydrologic regions of CONUS (2010-2020). Colors show the percent of total Nitrogen load contributed from agriculture, atmospheric deposition, natural sources, wastewater, and other human sources.
A stacked bar chart showing the relative sources of Nitrogen across hydrologic regions of CONUS (2010-2020). Colors show the percent of total Nitrogen load contributed from agriculture, atmospheric deposition, natural sources, wastewater, and other human sources.
A stacked bar chart showing the sources of Nitrogen across hydrologic regions of CONUS (2010-2020). Colors show the total Nitrogen load contributed from agriculture, atmospheric deposition, natural sources, wastewater, and other human sources.
A stacked bar chart showing the sources of Nitrogen across hydrologic regions of CONUS (2010-2020). Colors show the total Nitrogen load contributed from agriculture, atmospheric deposition, natural sources, wastewater, and other human sources.
Surface water supply and demand across hydrologic regions (2010-2020). Surface water supply is shown as average surface runoff, and demand reflects consumptive use.
Surface water supply and demand across hydrologic regions (2010-2020). Surface water supply is shown as average surface runoff, and demand reflects consumptive use.
Water limitation across the lower 48. Water limitation is measured as the Supply and Use Index (SUI) which represents the imbalance between water supply and demand. A higher SUI indicates a greater proportion of supply being used.
Water limitation across the lower 48. Water limitation is measured as the Supply and Use Index (SUI) which represents the imbalance between water supply and demand. A higher SUI indicates a greater proportion of supply being used.
In the lower 48 states, nearly 5,000 billion gallons of water fall in the form of precipitation each day. Most of that water re-enters the atmosphere through evapotranspiration, and about a quarter of our daily water input ends up as streamflow to the Atlantic and Pacific Oceans, Canada or the Gulf of Mexico.
In the lower 48 states, nearly 5,000 billion gallons of water fall in the form of precipitation each day. Most of that water re-enters the atmosphere through evapotranspiration, and about a quarter of our daily water input ends up as streamflow to the Atlantic and Pacific Oceans, Canada or the Gulf of Mexico.
Average daily water use for the top 3 water use categories in the lower 48 states: thermoelectric power generation, public supply, and crop irrigation.
Average daily water use for the top 3 water use categories in the lower 48 states: thermoelectric power generation, public supply, and crop irrigation.
Total water use for the top 3 water use categories: thermoelectric power generation, public supply, and crop irrigation. These three categories make up 90% of all water use in the contiguous United States.
Total water use for the top 3 water use categories: thermoelectric power generation, public supply, and crop irrigation. These three categories make up 90% of all water use in the contiguous United States.
Graphic developed for the release of the National Water Availability Assessment in January 2025.
Graphic developed for the release of the National Water Availability Assessment in January 2025.
Temperature logger attached to submerged cobble in Quartzville Creek, OR. This logger was placed as part of an ongoing effort to retrieve continuous temperature data from rivers and tributaries within the Willamette River basin, OR.
Temperature logger attached to submerged cobble in Quartzville Creek, OR. This logger was placed as part of an ongoing effort to retrieve continuous temperature data from rivers and tributaries within the Willamette River basin, OR.
The three Integrated Water Availability Assessment products are designed to be interdependent:
The three Integrated Water Availability Assessment products are designed to be interdependent:
The three National Water Availability Assessment products are designed to be interdependent:
The three National Water Availability Assessment products are designed to be interdependent:
Water limitation across the lower 48 United States, shown as the average from 2010 to 2020 for each watershed (HUC12). Water limitation levels were based on the surface water supply and use index, which expresses the imbalance between surface water-supply and consumptive use.
Water limitation across the lower 48 United States, shown as the average from 2010 to 2020 for each watershed (HUC12). Water limitation levels were based on the surface water supply and use index, which expresses the imbalance between surface water-supply and consumptive use.