Floods
Floods
A flood occurs when water levels rise and a body of water overflows its normal boundaries onto what is normally dry land. Flooding can be caused by factors such as prolonged and/or intense rainfall, abnormally intense tides, debris jams causing waterways to back up, or the failure of natural or manmade dams. Browse our studies on flooding below.
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Virginia Flood Investigations
An important part of the Virginia Department of Transportation's missions is the safe maintenance, design, and constructions of bridges that cross-waterways and wetlands in the State. The data collected by USGS in conjunction with this project is a vital element of the overall task and mission of the Virginia Department of Transportation.