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 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.
The following links outline some of the nation-wide efforts of the USGS to study and document these record-breaking floods:
Focal points of Spring/Summer floods in the Central US:
Chapter B - General weather conditions and precipitation
Chapter C - Peak streamflows and runoff volumes
Chapter D - Frequency and trends of peak streamflows and runoff volumes
Chapter E - New Madrid Floodway stages and streamflows
Chapter F - Sediment transport and deposition
Chapter G - Occurrence and transport of nutrients in the Missouri River basin
Chapter H - Historic comparison of Lower Missouri River geomorphic changes
Chapter I - Geomorphic change on the Missouri River during the flood
Chapter J - Monitoring critical infrastructure on the Mississippi River
Chapter K - Missouri River Mainstem Reservoir System Operations
Chapter L - Ecosystem Effects in the Lower Mississippi River Basin
Summary - Flood information sheet: science efforts of the U.S. Geological Survey
Video: The Anatomy of Floods: The Causes and Development of 2011's Epic Flood Events
2011 Service Assessments from the National Weather Service
Divine Providence - The 2011 flood in the Mississippi River and Tributaries Project, by Charles Camillo (USACE, 2012)
USACE Post 2011 Flood Event Analysis of the Missouri River Mainstem Flood Control Storage
IRTF Report - Interagency Recovery Task Force website with 2011-12 report.