National Program for Inspection of Non-Federal Dams. Aspinook Dam (CT 00539), Thames River Basin, Griswald/Lisbon, Connecticut. Phase I Inspection Program.
Abstract
Aspinook Pond Dam is a massive masonry and concrete structure spanning the Quinebaug River. It consists of a 410 ft. long overflow structure with a concrete crest, a short masonry right abutment training wall, and a 135 ft. long masonry left abutment, which forms one wall of a large forebay basin. The entire length of the dam is about 550 ft. The dam is judged to be in fair condition owing to the absence of an operative dewatering facility. Water was flowing to a depth of about 6 in. over the crest of the spillway at the time of the inspection, so it was not possible to observe the condition of the downstream face or the crest of the overflow section. Nevertheless, the water appeared to be flowing uniformly with no evidence of turbulence or missing or eroded elements. There was some vegetation growing on the face of the left abutment. A slight amount of leakage was noted to be coming through the walls of the left abutment. Sluice gates leading into and out of the forebay were all inoperative and leaking. There is a small depression in the earthfill immediately behind the right masonry abutment wall. The spillway can pass 36,600 cfs or about 45 percent of the test flood outflow without overtopping the left abutment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1979
- Accession Number
- ADA144606
Entities
Organizations
- New England District, U.S. Army Corps of Engineers