Accession Number:

ADA099063

Title:

National Dam Inspection Program. Chambers Dam (NDI ID Number PA-1093, DER ID Number 63-21), Ohio River Basin, Bane Creek, Washington County, Pennsylvania. Phase I Inspection Report.

Descriptive Note:

Corporate Author:

KIMBALL (L ROBERT) AND ASSOCIATES EBENSBURG PA

Personal Author(s):

Report Date:

1981-04-01

Pagination or Media Count:

73.0

Abstract:

The Chambers Dam appears to be in poor condition and poorly maintained. Erosion of the upstream slope has reduced the embankment crest to a width of 4 feet. Minor seepage was observed on the downstream slope of the dam, and a wet area was observed immediately beyond the toe of the dam. Brush and trees litter the downstream slope of the dam. No determination could be made as to the actual condition of the drainline culvert through the embankment. No determination could be made as to the condition or type of upstream closure on the culvert or whether the control is operable. The spillway located at the right abutment of the dam is in a deteriorating condition. Erosion exists along the right outside edge of the spillway wingwall. If the erosion is left unchecked, the potential for failure of the spillway and dam exists. The Chambers Dam is a high hazard-small size dam. The recommended Spillway Design Flood SDF for a dam of this size and classification is in the range of 12 PMF to PMF. Based on the downstream potential for loss of life and property damage, the spillway design flood has been selected as the PMF. The spillway and reservoir are capable of controlling less than 1 of the PMF without overtopping the embankment low spot.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE