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.

USGS Flood Event Viewer: Providing Hurricane and Flood Response Data

thumbnail of USGS Flood Event Viewer

The USGS streamgage network is the largest streamgage network in the US, but even with over 8,000 real-time stations, more data is needed for certain storms. During large, short-term events, the USGS collects additional data (high-water marks, additional sensor deployments) to aid in documenting high-water events. This short-term event data is uploaded to the USGS Short-Term Network (STN) for long-term archival. The USGS Flood Event Viewer provides convenient, map-based access to storm-surge and other event-based data collected within the USGS STN.

The Flood Event Viewer (FEV) application and STN database are designed to encourage, but not require, repeated visits to temporary sensor deployment (wave or water level) or HWM locations. By developing a system that encourages repeated, as-needed deployments in the same locations, the system facilitates the development of longer-term datasets of storm events than would be feasible by relying on field personnel's memories of previous deployments or interpretations of paper records alone. Efficient responses to significant events have become a cornerstone of the USGS Hazards Response.

For more information about the details of this program, please see our Frequently Asked Questions or use the contact information at the bottom of this page.

Many ways to access flood event data, brought to you by the Web Informatics and Mapping (WIM):

Helpful paper forms for offline use:

(Users with a PDF reader may be able to complete these fillable forms directly on a tablet or notebook PC in the field. Forms can also be printed.)

(Special thanks to Ryan Hollins for these versions of the forms!)

For questions related to this site or to contribute content, please email Todd Koenig.

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Page Last Modified: Thursday, 01-Nov-2018 11:34:24 EDT