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Flood Magnitude and Frequency of the Delaware River in New Jersey, New York, and Pennsylvania

Open-File Report 2008-1203
Prepared in cooperation with Federal Emergency Management Agency
By:  and 
https://doi.org/10.3133/ofr20081203

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Abstract

From September 2004 to June 2006, the Delaware River in New Jersey, New York, and Pennsylvania experienced three major floods that caused extensive damage. The Federal Emergency Management Agency (FEMA) needed updated information on the flood magnitude and frequency for the eight active streamflow-gaging stations along the main stem Delaware River in New Jersey, New York, and Pennsylvania that included the three recent floods in order to update its flood insurance studies. Therefore, the U.S. Geological Survey (USGS) computed updated flood magnitude and frequency values following the guidelines published by the Interagency Advisory Committee on Water Data in its Bulletin 17B. The updated flood-frequency values indicate that the recurrence interval of the September 2004 flood ranged from 20 to 35 years, the recurrence interval of the April 2005 flood ranged from 40 to 70 years, and the recurrence interval of the June 2006 flood ranged from 70 to greater than 100 years. Examination of trends in flood discharges indicate no statistically significant trends in peak flows during the period of record for any of the eight streamflow-gaging stations.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Flood Magnitude and Frequency of the Delaware River in New Jersey, New York, and Pennsylvania
Series title Open-File Report
Series number 2008-1203
DOI 10.3133/ofr20081203
Edition -
Year Published 2008
Language ENGLISH
Publisher Geological Survey (U.S.)
Contributing office(s) New Jersey Water Science Center
Description iv, 9 p.
Time Range Start 2004-09-01
Time Range End 2006-06-30
Online Only (Y/N) Y
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