National Dam Inspection Program. Lake Conewago Dam (NDI Number PA-00593, DER Number 38-012), Susquehanna River Basin, Lebanon County, Pennsylvania. Phase I Inspection Report

Abstract

Based on the visual inspection, past performance and the available engineering data, the dam and its appurtenant structures appear to be in poor condition. In accordance with the Corps of Engineers' evaluation guidelines, the size classification of this dam is small, and the hazard classification is significant. These classifications indicate that the Spillway Design Flood (SDF) should be in the range of the 100 year flood to one-half the Probable Maximum Flood (PMF). The recommended SDF for this structure is the 100 year flood. The spillway capacity is insufficient for passing the SDF without overtopping the dam. The spillway, therefore, is considered to be inadequate. Recommendations are presented for immediate action by the owner.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA108970

Entities

People

  • Hendrik Jongsma

Tags

DTIC Thesaurus Topics

  • Concrete
  • Construction
  • Dams
  • Drainage Basins
  • Embankments
  • Engineering
  • Engineers
  • Flood Control
  • Gates
  • Hazards
  • Inspection
  • Pennsylvania
  • Photographs
  • Surveillance
  • United States
  • Visual Inspection
  • Warning Systems

Readers

  • Hydrologic Risk Analysis and Mitigation.