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 Flood Hazard Coordinator.This web page provides an overview of USGS's research about sediment sampling and data processing. It includes related research, maps, news, partners, a list of flooding events, and a collection of data and tools (Introduction).