Accession Number:

ADA109216

Title:

National Dam Inspection Program. Unger Dam (NDI ID Number PA-01090, PennDer ID Number 64-208), Delaware River Basin, Red Shale Brook, Wayne County, Pennsylvania. Phase I Inspection Report

Descriptive Note:

Corporate Author:

GAI CONSULTANTS INC MONROEVILLE PA

Personal Author(s):

Report Date:

1981-09-01

Pagination or Media Count:

58.0

Abstract:

Based on a visual inspection, operational history, and hydrologic and hydraulic analysis, the dam is considered to be in good condition. The size classification of the facility is small and its hazard classification is considered to be significant. In accordance with the recommended guidelines, the Spillway Design Flood SDF for the facility ranges between the 100-year frequency flood and the 12 PMF Probable Maximum Flood. Since the facility is classified near the lower bounds of the small category, the SDF is considered to be the 100-year frequency flood. Results of the hydrologic and hydraulic analysis indicate the facility is not capable of passing the inflow resulting from a 100-year frequency flood without overtopping the embankment. Consequently, the spillway at Unger Dam is considered to be inadequate.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE