Geological Survey (U.S.)

2014¿5030

Tech Report

United States. Dept. of the Interior

The central purpose of this report is to present methods for estimating the magnitude and frequency of floods on urban and small, rural streams in the Southeast United States with particular focus on Georgia, South Carolina, and North Carolina. Consequently, in this report the use of the term “Southeast” refers specifically to Georgia, South Carolina, and North Carolina. The analytical techniques described in the report incorporate both urban and rural streamgages and, therefore, can be applied to urban and small, rural streams. In the Southeast rural flood-frequency investigation by Gotvald and others (2009), Weaver and others (2009), and Feaster and others (2009), the lower limit of drainage area for the rural basins included was 1 square mile (mi2 ). The lower limit of drainage area for rural basins included in the current investigation is 0.1 mi2 . Consequently, in this report, small, rural streams refer to those with drainage areas less than 1 mi2 . In addition, the scope of the investigation does not include the Blue Ridge region due to an insufficient number of urban streamgages.

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US Transportation Collection