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Scientific Investigations Report 2010–5057

Prepared in cooperation with the Susquehanna River Basin Commission and Lycoming County

Development of Flood-Inundation Maps for the West Branch Susquehanna River near the Borough of Jersey Shore, Lycoming County, Pennsylvania

By Mark A. Roland and Scott A. Hoffman

Thumbnail of and link to report PDF (2.9 MB)Abstract

Streamflow data, water-surface-elevation profiles derived from a Hydrologic Engineering Center River Analysis System hydraulic model, and geographical information system digital elevation models were used to develop a set of 18 flood-inundation maps for an approximately 5-mile reach of the West Branch Susquehanna River near the Borough of Jersey Shore, Pa. The inundation maps were created by the U.S. Geological Survey in cooperation with the Susquehanna River Basin Commission and Lycoming County as part of an ongoing effort by the National Oceanic and Atmospheric Administration's National Weather Service to focus on continued improvements to the flood forecasting and warning abilities in the Susquehanna River Basin and to modernize flood-forecasting methodologies. The maps, ranging from 23.0 to 40.0 feet in 1-foot increments, correspond to river stage at the U.S. Geological Survey streamgage 01549760 at Jersey Shore. The electronic files used to develop the maps were provided to the National Weather Service for incorporation into their Advanced Hydrologic Prediction Service website. The maps are displayed on this website, which serves as a web-based floodwarning system, and can be used to identify areas of predicted flood inundation associated with forecasted flood-peak stages. During times of flooding or predicted flooding, these maps can be used by emergency managers and the public to take proactive steps to protect life and reduce property damage caused by floods.

First posted October 28, 2011

For additional information contact:
Director, Pennsylvania Water Science Center
U.S. Geological Survey
215 Limekiln Road
New Cumberland, Pennsylvania 17070
http://pa.water.usgs.gov/

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Suggested citation:

Roland, M.A., and Hoffman, S.A., 2011, Development of flood-inundation maps for the West Branch Susquehanna River near the Borough of Jersey Shore, Lycoming County, Pennsylvania: U.S. Geological Survey Scientific Investigations Report 2010–5057, 9 p.



Contents

Abstract

Introduction

Hydrologic Analysis

Hydraulic Analysis

Development of Flood-Inundation Maps

Comparison of Flood-Inundation Map to Aerial Photograph

Summary

Acknowledgments

References Cited


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