Layer: elev_342_3 (ID: 42)

Parent Layer: Depth Grids

Name: elev_342_3

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Type: Raster Layer

Geometry Type: null

Description: This layer was created as part of a Flood Inundation Map Library developed for display within the NOAA National Weather Service's Advanced Hydrologic Prediction Services (AHPS). This data represents the potential flood extent for an elevation of 331.3 to 356.3 feet as recorded at the Swatara Creek at Hershey (Hershey, PA; USGS ID 01573560) streamgage for the Swatara Creek. This data is part of a series of inundation layers meant to correlate observations and forecasts from the river gages with a visual representation of the areas impacted by high water. The dataset of flood depth grids was created from flood scenarios generated by HEC-RAS runs and LiDAR data obtained from the USGS which was processed to extract bare earth points. A raster of depth grids for each stage was created and subsequently merged to form continuous datasets for the Swatara Creek. This data was developed to assist the public and emergency officials with planning and response to high water episodes at or near a defined National Weather Service river forecast point.

Copyright Text: USACE, USACE-Baltimore District, USACE Institute of Water Resources, Hydrologic Engineering Center (CEIWR-HEC), USGS, NWS, FEMA, Esri, SRBC

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