Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Explore water-related photography, imagery, and illustrations.
The surface water supply and use index (SUI) expresses the fraction of the median long-term water supply at a HUC12 that is unavailable either because of climatic variability (e.g. an unusually dry year) or because the water is used consumptively for crop irrigation, thermoelectric power, or public supply.
The surface water supply and use index (SUI) expresses the fraction of the median long-term water supply at a HUC12 that is unavailable either because of climatic variability (e.g. an unusually dry year) or because the water is used consumptively for crop irrigation, thermoelectric power, or public supply.
Video Description – October 2024 to September 2025
Video Description – October 2024 to September 2025
U.S. River Conditions, July to September 2025 thumbnail image. The river conditions shown range from the driest condition seen at a gage (red open circles) to the wettest (blue closed circles). A purple outer ring around a gage indicates it is flooding.
U.S. River Conditions, July to September 2025 thumbnail image. The river conditions shown range from the driest condition seen at a gage (red open circles) to the wettest (blue closed circles). A purple outer ring around a gage indicates it is flooding.
Art of Inquiry show hosted at USGS on 22 September, 2025 as part of Flagstaff Festival of Science and in collaboration with Flagstaff Arts and Leadership Academy
Art of Inquiry show hosted at USGS on 22 September, 2025 as part of Flagstaff Festival of Science and in collaboration with Flagstaff Arts and Leadership Academy
3D render of the Delaware River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of the Delaware River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Willamette River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Willamette River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Trinity-San Jacinto, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Trinity-San Jacinto, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Klamath River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Klamath River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Upper Colorado River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of Upper Colorado River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of the Illinois River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
3D render of the Illinois River Basin, created using TopoRivBlender. Read more about this method at https://waterdata.usgs.gov/blog/topo-riv-blender/
Screenshot of the Water Data for the Nation (WDFN) groundwater monitoring location page for USGS 354133082042203 MC-109 Near Pleasant Gardens, NC Bedrock.
Screenshot of the Water Data for the Nation (WDFN) groundwater monitoring location page for USGS 354133082042203 MC-109 Near Pleasant Gardens, NC Bedrock.
During major storms or other short-term events, the USGS collects streamflow and additional data (including storm tide, wave height, high-water marks, and additional sensor deployments) to aid in documenting flood events.
During major storms or other short-term events, the USGS collects streamflow and additional data (including storm tide, wave height, high-water marks, and additional sensor deployments) to aid in documenting flood events.
Map of the Upper Colorado River Basin —referred to as an Integrated Water Science (IWS) basins—are intensively monitored study basins representing a wide range of environmental, hydrologic, and landscape settings and human stressors of water resources to improve our understanding of water availability across the Nation.
Map of the Upper Colorado River Basin —referred to as an Integrated Water Science (IWS) basins—are intensively monitored study basins representing a wide range of environmental, hydrologic, and landscape settings and human stressors of water resources to improve our understanding of water availability across the Nation.
Alaska Science Center Data Management staff organize, scan, and digitally archive physical data. Once published as part of a data release, the physical data are organized and placed into banker boxes, labeled with pertinent information, such as the data release DOI, and moved to a secure location.
Alaska Science Center Data Management staff organize, scan, and digitally archive physical data. Once published as part of a data release, the physical data are organized and placed into banker boxes, labeled with pertinent information, such as the data release DOI, and moved to a secure location.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.
Orange streams are increasingly common in the Brooks Range of northern Alaska. The orange stream color reflects oxidized iron, but also often indicates elevated heavy metal concentrations. Our ongoing study aims to document these occurrences and the timing of their onset.