Major Flood Events

Learn more about USGS flood activities related to the September 2013 Southwest Floods that occurred when rains brought major flooding to parts of Colorado, New Mexico, Arizona, and Utah.

Learn more about USGS flood activities related to the May-June 2013 Midwest Floods.

Learn more about USGS flood activities related to the April-May 2013 Midwest Floods caused by heavy rainfall and late snow-melt in six states.

Learn more about USGS flood activities related to the 2011 Missouri River Basin Flood resulting from higher-than-average snowmelt runoff combined with heavy spring rains.

Learn more about USGS flood activities related to the Spring/Summer 2011 floods throughout the Mississippi River Basin.

Learn more about USGS flood activities related to the May 2011 flood in Louisiana, including additional real-time monitoring for the Morganza and Bonnet Carre Spillways which were opened to release floodwaters into the Mississippi River.

Learn more about USGS flood activities related to the May 2011 flood in Memphis, Tennessee, including deploying emergency real-time surface-water stage gages at critical locations in Shelby County.

Learn more about USGS flood activities related to the April 2011 Arkansas Flood.

Learn more about USGS flood activities related to the April 2011 North Dakota Flood resulting from sudden winter snowmelt due to warmer-than-expected temperatures and rain.