Water Resources of the United States

Regional and Local Flood Alerts

PROJECT ALERT NOTICE (CA) Flood waters recede as AR storm moves out of southern CA
Fri, 07 Dec 2018 14:06:17 EST
Recessional flows are being measured today in southern CA as an intense AR storm that caused flooding, mudslides and debris flows moves out of the region.
PROJECT ALERT NOTICE (CA) CA: AR brings heavy and intense precip, causing SoCal flooding
Thu, 06 Dec 2018 19:59:09 EST
A stronger-than-predicted atmospheric river brought heavy and intense precipitation to parts of southern California today, causing local flooding and triggering mud slides and debris flows.
PROJECT ALERT NOTICE (CA) Recessional flows in CA following 1st major winter storm
Fri, 30 Nov 2018 14:17:46 EST
Recessional flows are being measured today in CA following the first major winter storm of the season.
PROJECT ALERT NOTICE (CA) Winter storm brings rain and snow to CA; warnings for flash floods and debris flows
Thu, 29 Nov 2018 14:54:01 EST
Winter storm brings rain and snow to CA; warnings for flash floods and debris flows
PROJECT ALERT NOTICE (MA) Hydrographers in the field this weekend
Sat, 03 Nov 2018 11:39:20 EDT
1 to 4 inches of rain over the past week causes above normal streamflow with most streamgages reporting above the 90th percentile.

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

Related Links

US Army Corps of Engineers Flood Risk Management
ESRI Current Flood conditions with social media
100-Year Flood--It's All About Chance - poster discussing the meaning and use of probability language in flood characterization.
USGS Water Science School - a comprehensive, down-to-earth introduction to water science.

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.

This section contains information about active and recent events tracked by the USGS National Floods Specialist. Streamflow data is vitally important for our partner agencies to forecast flood magnitude and timing, operate flood control systems, and manage emergency response. In addition, USGS also coordinates collection and dissemination of geospatial imagery and map products used for flood response and evaluation.

Today's Flood Conditions
(USGS WaterWatch)

  • River Above Flood Stage
  • 99th Percentile
  • 95-98 Percentile

Additional Resources for Current Conditions and Forecasts

USGS Home Water Climate Change Science Systems Ecosystems Energy, Minerals, & Env. Health Hazards USGS Intranet

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URL: https://water.usgs.gov/floods/
Page Contact Information: Water Webserver Team
Page Last Modified: Thursday, 06-Dec-2018 12:55:40 EST