| Peak-Flow Characteristics of Virginia Streams Contributor(s): U. S. Department of the Interior (Author) |
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ISBN: 1499631650 ISBN-13: 9781499631654 Publisher: Createspace Independent Publishing Platform OUR PRICE: $17.09 Product Type: Paperback Published: July 2014 |
| Additional Information |
| BISAC Categories: - Reference |
| Physical Information: 0.24" H x 8.5" W x 11.02" (0.63 lbs) 116 pages |
| Descriptions, Reviews, Etc. |
| Publisher Description: Peak-flow annual exceedance probabilities, also called probability-percent chance flow estimates, and regional regression equations are provided describing the peak-flow characteristics of Virginia streams. Statistical methods are used to evaluate peak-flow data. Analysis of Virginia peak-flow data collected from 1895 through 2007 is summarized. Methods are provided for estimating unregulated peak flow of gaged and ungaged streams. Station peak-flow characteristics identified by fitting the logarithms of annual peak flows to a Log- Pearson Type III frequency distribution yield annual exceed-ance probabilities of 0.5, 0.4292, 0.2, 0.1, 0.04, 0.02, 0.01, 0.005, and 0.002 for 476 streamgaging stations. Stream basin characteristics computed using spatial data and a geographic information system are used as explanatory variables in regional regression model equations for six physiographic regions to estimate regional annual exceedance probabilities at gaged and ungaged sites. |
