Data and Tools


View the U.S. map of flood and high-water conditions. You are able to narrow your view by State and by water resource region.

Filter Total Items: 11
Date published: December 21, 2018

California Flood Activity Alerts

USGS Project Alert Notices RSS feed includes response summaries of USGS streamgaging network activity during storm events in California. These Notices are produced by USGS Streamgaging Programs nationally and can be found on the USGS Current Floods Website.

Date published: July 9, 2018

Data Used to Characterize Peak Streamflows and Flood Inundation Resulting from Hurricane Harvey

In the immediate aftermath of Hurricane Harvey, the USGS and FEMA worked together to document the storm event in southeastern Texas and southwestern Louisiana.  This data release contains the flood inundation polygons, flood-depth rasters, mapped boundaries, and high-water mark (HWM) locations for the selected river basins...

Date published: June 20, 2018

USGS SWaTH Network

SWaTH is a system of flood-hardened, real-time telemetered tide gages, rapid deployment gages, and storm tide sensors deployed in integrated network configurations along the Northeastern Atlantic Coast from North Carolina to Maine.

Date published: March 28, 2018

USGS WaterNow

Want to know what's happening right now? Request real-time information from any USGS streamgage with the USGS WaterNow text service. This service responds to your text message with information about the current stage, streamflow, or other parameters collected at the gage.

Date published: March 28, 2018

USGS Peak Streamflow Data

The National Water Information System (NWIS) is the USGS water data portal where you can find a wealth of historic and real-time data related to floods. The NWIS website also is where you can query peak streamflow data by station, state (...

Date published: March 28, 2018

FloodWatch - View flood and high-flow conditions.

The USGS FloodWatch website is a map-based resource from USGS WaterWatch that gives users hourly visual updates for flood conditions at over 3000 locations across the United States (...

Date published: October 7, 2017

USGS Flood Event Viewer - Network

The USGS operates an event-based mobile storm-surge sensor network to capture information about coastal and inland storm tides.

Date published: October 6, 2017

WaterWatch - Floods NJ

Real-Time Interactive Map of Floods and High Flow conditions in New Jersey

Date published: June 15, 2016

Flood Watch for Kansas

Maps of flood and high flow conditions within Kansas

Date published: March 12, 2016

Water-Quality Summaries for Several Major River Basins in Colorado

Summaries of water-quality monitoring data are now available for several major river basins in Colorado. For each basin, current data from a network of sites are compared to previously collected data and instream standards. Lowess curves are provided on plots for selected constituents where a sufficient period of record and limited censored data are available.

Date published: March 7, 2016

Flood Watch

Maps of flood and high flow conditions within the U.S.