Water Resources of the United States

USGS Flood-related Publications

Visit the USGS Flood Reports page for floods dating back over 100 years.

Related Links

Archive of USGS Project Alert flood notices - local and regional flood briefs since 2008.
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.

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.

  • 2011 Flood Events

Video describing USGS flood efforts during 2011

2011 proved to be another record-breaking flood year in the United States. USGS Water Science Center personnel from North Dakota to Louisiana measured springtime floods on the Red River of the North, the Ohio River, the Mississippi River, and many tributaries. The Missouri River and its tributaries saw record-breaking snow-melt runoff through the summer, followed closely by Hurricane Irene and Tropical Storm Lee in the fall for the East Coast.

This page outlines some of the nation-wide efforts of the USGS to study and document these record-breaking floods:

Regional Flooding Events

Photo of New Madrid Floodway

Spring/Summer Mississippi Basin Floods

Record floods across the Missouri, Upper Mississippi, and Ohio Rivers converge and challenge resource managers throughout the Midwest. Choose one of the focal point links below for more information.

Focal points:
North Dakota Missouri River basin New Madrid Floodway
Memphis, Tennessee Arkansas Louisiana
Water-Quality Sampling of the Mississippi Flood Waters - May 2011
Photo of USGS Hydrographer installing stage sensor

Hurricane Irene (August)

The USGS deployed stage sensors and rapid deployment real-time streamgages along the East Coast in anticipation of Hurricane Irene. USGS measurements and geospatial products are valuable tools for providing scientific assessments to decision makers both during the event and for future planning after the event.

Photo of Conowingo Dam on the Susquehanna River

Tropical Storm Lee (September)

USGS personnel respond to the second major storm in 2 months as Tropical Storm Lee adds 20 inches of rain to an already wet season.

Local Flooding Events

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URL: https://water.usgs.gov/floods/events/2011/
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Page Last Modified: Friday, 03-Feb-2017 10:59:42 EST