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| Publications—Open-File Report |
By Thomas P. Suro and Gary D. Firda
U.S. Geological Survey Open-File Report 2006-1319
The body of the report is available in PDF Format ( 16,298 KB)
Heavy rain on April 2–3, 2005 produced rainfall amounts of 3 inches to almost 6 inches within a 36-hour period throughout the Delaware River basin. Major flooding occurred in the East and West Branches of the Delaware River and their tributaries, the main stem of the Delaware River and the Neversink River, a major tributary to the Delaware River. The resultant flooding damaged hundreds of homes, caused millions of dollars in damage to infrastructure in Orange and Sullivan Counties, and forced more than 1,000 residents to evacuate their homes. A total of 20 New York counties were declared Federal disaster areas. Some of the most extensive flooding occurred along the Neversink and Delaware Rivers in Orange and Sullivan Counties, New York. Disaster recovery assistance from the April 2005 flooding in New York stood at almost $35 million in 2005, at which time more than 3,400 New Yorkers had registered for Federal aid. All U.S. Geological Survey stream-gaging stations on the Neversink River below the Neversink Reservoir recorded peak water-surface elevations higher than those recorded during the September 2004 flooding. Peak water-surface elevations at some study sites on the Neversink River exceeded the 500-year flood elevation as documented in flood-insurance studies by the Federal Emergency Management Agency. Flood peaks at some long-term U.S. Geological Survey stream-gaging stations were the highest ever recorded. Several U.S. Geological Survey stream-gaging stations on the Delaware River also recorded peak water-surface elevations that exceeded those recorded during the September 2004 flooding.
Abstract
Introduction
Rainfall in the Neversink River Basin
Flood of April 2–3, 2005 Discharge and Frequency
Effects of Neversink Reservoir on Downstream Flooding
Peak Water-Surface Elevations at Flood Study Sites
Flood Damage
Summary
Acknowledgments
Selected References
Appendix 1. Site Descriptions and High-Water Marks at Study Sites, Flood of April 2–3, 2005, in the Neversink River Basin, New York
Appendix 2. Selected Photographs of Flood Damage During the Flood of April 2–3, 2005, in the Neversink River Basin and Surrounding Areas
1. Map showing pertinent geographic features of southeastern New York and precipitation from the storm of April 2–3, 2005
2. Graph showing cumulative rainfall during April 2–3, 2005, recorded at the National Weather Service site at Claryville, N.Y
3. Map showing locations of selected U.S. Geological Survey stream-gaging stations in the Delaware River basin, N.Y
4–6. Graphs showing—
4. Discharge hydrographs for selected stream-gaging stations in the Neversink River basin, March 27 to April 6, 2005
5. Peak discharges at selected stream-gaging stations in the Delaware River basin, N.Y., as a function of drainage area during the flood of April 2–3, 2005, and previous maximum known discharges
6. Hourly inflow, outflow, diversions, and water-surface elevation at the Neversink Reservoir, N.Y., March 27 to April 6, 2005
7. Map showing locations of 25 high-water-mark sites chosen for study in the Neversink River basin, N.Y., during the flood of April 2–3, 2005
8. Graphs showing peak water-surface elevations at selected sites in the Neversink River basin, N.Y., during April 2–3, 2005, and flood-recurrence values from Federal Emergency Management Agency flood-insurance studies
9. Photograph showing Main Street bridge (U.S. Route 6) over the Neversink River at Port Jervis, N.Y., April 3, 2005
1. Total rainfall from April 2–3, 2005, at selected locations in the Neversink River basin and surrounding areas
2. Rainfall-frequency relations for storms of 3-, 6-, 12-, and 24-hour durations at Claryville, N.Y.
3. Historical flood peaks, and peak discharges during the flood of April 2–3, 2005, at selected U.S. Geological Survey stream-gaging stations in the Delaware River basin, N.Y.
4. Historical peak discharges, and discharges during the flood of April 2–3, 2005, at selected U.S. Geological Survey stream-gaging stations in the Neversink River basin, N.Y.
5. Peak water-surface elevations at 25 high-water-mark sites in the Neversink River basin, N.Y., during the flood of April 2–3, 2005, and corresponding water-surface elevations for 10-, 50-, 100-, and 500-year flood-recurrence intervals
If you have Adobe® Acrobat® or Adobe® Acrobat® Reader® installed on your computer, you may view and print the PDF version of this report. Acrobat Reader, is a free download from Adobe Systems, Inc. Users with disabilities can view information concerning accessibility at access.Adobe.com .
For further information, contact:
Rafael W. Rodriguez, Director
U.S. Geological Survey
New York Water Science Center
425 Jordan Road
Troy, NY 12180-8349
(518)285-5600
or visit our Web site at: http://ny.water.usgs.gov
U.S. Department of the Interior | U.S. Geological Survey
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