National Dam Inspection Program. Caledonia Water Company Dam (NDI I.D. PA-1143, DER I.D. 28-108), Potomac River Basin, Stump Run, Franklin County, Pennsylvania. Phase I Inspection Report

摘要

The Dam appears to be in fair condition but poorly maintained. Surface erosion has caused silt and sand to be deposited at the toe of the dam, in the area of the drainline outlet. The outlet was not visible during the inspection. Soil erosion deposits have been allowed to continue unchecked and have apparently covered the outlet. No determination could be made with regards to the condition of the drainline and outlet. A seepage area was observed at the downstream toe of the dam near mid-embankment. Seepage at the location was estimated to equal 1 gallon per minute. The cause of the seepage should be investigated, and its potential affect on the long term stability of the structure determined. Final construction of proposed modifications may not have been completed. No drainline control facility exists to regulate flow through the drainline, and final seeding of the embankment crest and slopes were either unsuccessful or never completed. Observed obstructions at the entrance to, and in, the principal spillway channel, were noted as having a potential effect on the discharge capacity of the spillway.