PROBABLE MAXIMUM FLOOD ESTIMATION-EASTERN UNITED STATES1 |
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Authors: | Paul B. Ely John C. Peters |
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Affiliation: | Hydraulic Engineers, Hydrologic Engineering Center, 609 Second Street, Davis, California 95616. |
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Abstract: | In 1982, the National Weather Service (NWS) published criteria for developing the spatial and temporal precipitation distribution characteristics of Probable Maximum Storms. The criteria, which are intended for use in the United States east of the 105th meridian, involve four variables: (1) location of the storm center, (2) storm-area size, (3) storm orientation, and (4) temporal arrangement of precipitation amounts. A computer program has been developed which applies the NWS criteria to produce hyetographs of spatially-averaged precipitation for a basin, or for each subbasin if the basin is subdividided. The basis and operational characteristics of the program are described, and an application is illustrated in which the program is used in conjunction with a precipitation-runoff simulation program (HEC-1) to compute a Probable Maximum Flood. |
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Keywords: | Probable Maximum Flood design storm |
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