National Dam Inspection Program. Towamensing Trails Dam (NDI Number PA-00920 DER Number 13-108), Delaware River Basin, Carbon County, Pennsylvania. Phase I Inspection Report.
Abstract
The Towamensing Trials Dam is a 38 foot high zoned earthfill dam with an embankment length of about 3200 feet. Impervious material forms the upstream section of the embankment and has a surface slope of 3H to 1V. Random fill makes up the remaining portion of the embankment and forms a downstream slope of 2.5H to 1V. An internal drainage system includes a vertical stone drain 30 inches in width over the major length of the embankment. This vertical drain connects to a horizontal blanket drain which discharges into a 12-inch diameter perforated drain pipe just beneath the downstream toe of the embankment. A five foot deep key trench of impervious soil is located at the upstream toe of the embankment. This trench has a bottom width of 30 feet. The spillway, located at the left abutment, is a 50 foot wide concrete ogee section with a crest elevation of 1,645. Design crest elevation of the embankment is 1650.5. The outlet channel for the spillway is paved with concrete and has concrete training walls extending to a point 300 feet downstream from the spillway.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1979
- Accession Number
- ADA078874