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Statistical analyses of flood frequency, low-flow frequency, and flow duration of streams in the Philadelphia Area, Pennsylvania

Water-Resources Investigations Report 85-4008
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https://doi.org/10.3133/wri854008

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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.

Suggested Citation

Voytik, A., 1986, Statistical analyses of flood frequency, low-flow frequency, and flow duration of streams in the Philadelphia Area, Pennsylvania: U.S. Geological Survey Water-Resources Investigations Report 85-4008, iii, 34 p. :ill., map ;28 cm., https://doi.org/10.3133/wri854008.

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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