Pennypack Watershed, Pennsylvania. Expanded Flood Plain Information.

Abstract

The purpose of this technical report on the Pennypack watershed XFPI pilot study is to give local planning officials and agencies the results of a comprehensive investigation of the implications of future land use changes in the watershed. This report documents data and technical procedures. It also details results and conclusions from the investigation of flood hazard, flood damage and environmental impact potential of possible changes in land use both on and off the floodplain. Flood flows and flooded areas were found to increase slightly for the Pennypack Watershed as a whole. However, floodflows in individual sub-basin areas were found to increase by as much as 20% for a 100 year flood and up to 36% for a 10 year flood. In general, as the watershed continues to develop, floodflows (and also flood depths and flooded areas) can be expected to increase more for frequent flood events than for infrequent events. Local flood hazard impacts vary widely because of variations in development densities, ground cover and topography. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1980
Accession Number
ADA110012

Entities

Organizations

  • Philadelphia District, U.S. Army Corps of Engineers

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Human Systems
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Birds
  • Cells
  • Habitats
  • Medical Personnel
  • Poultry
  • Wildlife

Readers

  • Hydrologic Risk Analysis and Mitigation.
  • Regression Analysis.
  • Riverine Ecology