Statistical analyses of flood frequency, low-flow frequency, and flow duration of streams in the Philadelphia Area, Pennsylvania
Water-Resources Investigations Report
85-4008
By: Andrew Voytik
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Abstract
Flood frequency, low-flow frequency, and flow-duration characteristics were computed for 26 stream-gaging stations in and near Philadelphia. Data were obtained from 21 continuous-recording stations and five stations that were initially continuous-recording stations, but which were subsequently converted to crest-stage stations. The annual peak flows were fitted to the three-parameter log-Pearson Type III distribution to develop the flood- frequency characteristics. The range of the reported annual recurrence intervals for flood-frequency depends on record length. Low-flow frequency characteristics for various numbers of consecutive days were also defined by fitting data to the log-Pearson Type III distribution. Standard analyses of daily discharges produced the duration curve characteristics. Results of these analyses are tabulated.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Statistical analyses of flood frequency, low-flow frequency, and flow duration of streams in the Philadelphia Area, Pennsylvania |
| Series title | Water-Resources Investigations Report |
| Series number | 85-4008 |
| DOI | 10.3133/wri854008 |
| Year Published | 1986 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | Pennsylvania Water Science Center |
| Description | iii, 34 p. :ill., map ;28 cm. |
| Country | United States |
| State | Pennsylvania |
| City | Philadelphia |
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