National Dam Inspection Programs. Alcoa Dam, DNI Number PA-493. Ohio River Basin, Little Chartiers Creek, Washington County, Pennsylvania. Phase I Inspection Report.
Abstract
Based on visual inspection, past performance, and a brief analysis utilizing available design data, the dam appears to be in satisfactory condition but in need of additional analysis and minor repair. The facility can pass and/or store a flood of 87 percent of the PMF when flow is confined to the spillway and will pass the PMF with a flow above the dam crest (concrete gravity structure) of about 1 foot. Since the required design flow is the PMF, the spillway is considered inadequate and a more detailed hydraulic and hydrologic analysis is recommended to fully assess the capacity of the outlet system, including considering the effects of the failure of upstream dams on Alcoa Dam. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1978
- Accession Number
- ADA068835
Entities
Organizations
- GAI Consultants, Inc.