National Dam Inspection Program. Valley-Hi Eagle Lake Dam (NDS I.D. Number PA-00186, PennDer I.D. Number 29-33), Susquehanna River Basin, Oregon Creek, Fulton County, Pennsylvania. Phase I Inspection Report,
Abstract
Based on a visual inspection and hydrologic/hydraulic analysis the overall condition of the facility is considered to be fair. The size classification of the facility is small and the hazard classification is considered to be high. In accordance with the recommended guidelines, the Spillway Design Flood (SDF) ranges between the 1/2 PMF (Probable Maximum Flood) and the PMF. Results of the hydrologic/hydraulic analysis indicate the facility will discharge and/or store only 24 percent of the PMF prior to overtopping of the embankment. Overtopping is expected to cause embankment failure, with the breaching analysis indicating that failure will probably result in an increase to potential for loss of life downstream of the facility. Therefore, the spillway system is considered to be seriously inadequate, and the facility unsafe, non-emergency. Deficiencies noted by the inspection team included seepage and swamp-like conditions immediately downstream of the embankment toe and around the outlet conduit, heavily overgrown outlet and spillway discharge channels, an erosion ditch extending from the right abutment hillside to the downstream embankment toe along the embankment-abutment contact, deteriorated spillway concrete, several unvegetated areas along the embankment and adjoining spillway dike, and a submerged outlet conduit riser and control valve.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1979
- Accession Number
- ADA079001
Entities
People
- Bernard M. Mihalcin
Organizations
- GAI Consultants, Inc.