Water Resources of the United States


Water-level Sensors

Found one of our sensors?

Click here to verify the USGS authenticity.


Related Links

Archive of USGS Project Alert flood notices - local and regional flood briefs since 2008.
USGS Historic Storm Tide Sensor Map - see where the USGS has collected storm surge data during past events.
100-Year Flood--It's All About Chance - poster discussing the meaning and use of probability language in flood characterization.
Video: 2011: The Year of the Flood

State-based Flood Information

There is a USGS Water Science Center office in each State. Alabama Arkansas Georgia Illinois Indiana Kansas Louisiana Montana North Carolina North Dakota Oklahoma South Carolina Tennessee Wyoming Texas Alaska Arizona California Caribbean Colorado Connecticut Florida Hawaii Idaho Iowa Kentucky Maine Maryland-Delaware-D.C. Massachusettes Michigan Minnesota Mississippi Missouri Nebraska Nevada New Hampshire New Jersey New Mexico New York Ohio Oregon Pennsylvania Rhode Island South Dakota Utah Vermont Virginia Washington West Virginia Wisconsin

Click the map above to visit a State-specific flood page (if available), or check out one of these State flood databases:


Colorado Flood Database

Oklahoma Flood Database

USGS Contact Information

For questions related to this site or to contribute content, please email TODD KOENIG or BOB HOLMES at the USGS Office of Surface Water.

USGS Flood Information   

The USGS provides practical, unbiased information about the Nation's rivers and streams that is crucial in mitigating hazards associated with floods. This site provides information about the USGS activities, data, and services provided during regional high-flow events, such as hurricanes or multi-state flooding events. The USGS response to these events is typically managed by the National Floods Specialist.

USGS Data and Tools:

As Hurricane Matthew approached the Atlantic coast of the U.S., US Geological Survey crews positioned themselves to make flood-flow measurements, maintain streamgages, and deploy over 390 instruments capable of measuring the extent of coastal and inland flooding that are likely to result from this storm.

While USGS field crews worked tirelessly collecting data and maintaining equipment, our GIS experts quickly developed products capable of communicating this important data to our partners and the public. See below for some of these outstanding tools.

image of USGS flood event viewer

The USGS Flood Event Viewer helps USGS and its partners to track of the storm and its impact on surface water levels. A storm track field is included from NOAA's National Hurricane Center, and real-time USGS streamgage data and Rapid Deployment Gage data are linked through this map-based product.

Storm Surge Sensors are also shown that record fine-resolution storm tide and wave level data. This data became available on the viewer as soon as it was safe to retrieve the sensors and upload the data. In addition, imagery was provided from the National Geodetic Survey.

Following the event, high-water mark (HWM) data was added to the map by field crews soon after collection, including survey data and photos.

image of USGS map

The USGS National Map Disaster Coordination Preparedness & Response (DCPR) Map The DCPR is maintained by the National Geospatial Program. The web map provides geospatial visualization and situational awareness over the current disaster event. In addition to National Map base data and indexes the map can be used as a management and planning resource by providing access to enhanced elevation data availability, NOAA Nexrad weather radar and NOAA NowCoast storm surge and precipitation estimates. The application also provides a visual tool for partner data collected over the event including NOAA and Civil Air Patrol imagery.

image of USGS map

For a deeper look into potential coastal change, the USGS Coastal Change Hazards Portal. provided forecasts of the probability of coastal erosion during Hurricane Matthew. Also available are lidar-based dune elevations and modelled total water levels at the shoreline, due to both storm surge and wave run-up. Brought to you by the USGS St.Petersburg Coastal and Marine Science Center

image of USGS map

USGS Precipitation Viewer for North Carolina shows recent rainfall data in conjuction with National Weather Service precipitation data.

More Tools and Information:

image of NOAA map

NOAA's Coastal Imagery Viewer provides oblique imagery as it becomes available. The images captured from Hurricane Matthew can be compared to baseline images here.

image of FEMA website

FEMA disaster declaration (DR-4286): Incident period: October 4, 2016. Major Disaster Declaration declared on October 11, 2016

image of FEMA website

FEMA disaster declaration (DR-4285): Incident period: October 4, 2016. Major Disaster Declaration declared on October 10, 2016

image of FEMA website

FEMA disaster declaration (DR-4284): Incident period: October 4, 2016. Major Disaster Declaration declared on October 8, 2016

image of FEMA website

FEMA disaster declaration (DR-4283): Incident period: October 3, 2016. Major Disaster Declaration declared on October 8, 2016

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URL: https://water.usgs.gov/floods/events/2016/matthew/
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Page Last Modified: Friday, 05-May-2017 17:15:13 EDT