Flood-inundation maps for the West Branch Susquehanna River near the Boroughs of Lewisburg and Milton, Pennsylvania

Abstract

For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1-888-ASK-USGS. For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprodTo order this and other USGS information products, visit http://store.usgs.gov Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report.Suggested citation: Roland, M.A., and Hoffman, S.A., 2014, Flood-inundation maps for the West Branch Susquehanna River near the Boroughs of Lewisburg and Milton, Pennsylvania, 2013: U.S. Geological Survey Scientific Investigations Report 2014-5094, 13 p., http://dx.doi.org/10.3133/sir20145094. ISSN 2328 iii AcknowledgmentsThe authors wish to thank the Susquehanna River Basin Commission (SRBC) for funding associated with the Susquehanna Flood Forecast and Warning System. Special thanks are given to the many local, State, and Federal agencies that cooperated in the funding for the operation and maintenance of the gages used for this study, especially the Pennsylvania Department of Environmental Protection, Union County, and the U.S. Geological Survey (USGS) National Streamflow Information Program. Detailed technical reviews of this report were provided by Benjamin Pratt (SRBC) and Kara Watson (USGS). Thanks also go to Sue Reese (Geographic Information System Director, Union County) for her valued input and review of the inundation maps and Craig Smith (SRBC) for his detailed review of the hydraulic model. Vertical coordinate information is referenced to either (1) stage, the height above an arbitrary datum established at a streamgage, or (2) elevation, the height above the North American Vertical Datum of 1988 (NAVD 88). ContentsHorizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). Flood-Inundation Maps for the West Branch Susquehanna River near the Boroughs of Lewisburg and Milton, Pennsylvania, 2013By Mark A. Roland and Scott A. Hoffman AbstractDigital flood-inundation maps for an approximate 8-mile reach of the West Branch Susquehanna River from approximately 2 miles downstream from the Borough of Lewisburg, extending upstream to approximately 1 mile upstream from the Borough of Milton, Pennsylvania, were created by the U.S. Geological Survey (USGS) in cooperation with the Susquehanna River Basin Commission (SRBC). The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/ flood_inundation/, depict the estimated areal extent and depth of flooding corresponding to selected water levels (stages) at the USGS streamgage 01553500, West Branch Susquehanna River at Lewisburg, Pa. In addition, the information...