National Program for Inspection of Non-Federal Dams. Old Daniels Dam (CT 00168), Thames River Basin, Killingly, Connecticut. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
Pagination or Media Count:
Old Daniels dam is an earth embankment structure with a stone masonry concrete spillway. The impoundment was formerly used for industrial power and process water, but is now used for recreation only. The dam was constructed around 1880. The dam is 18 feet in height and approximately 346 feet in length including the spillway. The stone masonry concrete cap spillway has a crest length of about 112 feet. The outlet works is located approximately 30 feet from the right spillway abutment and consists of a stone masonry lined approach channel, a concrete intake structure which houses three manually operated wooden gates, and a concrete lined stone masonry arched outlet conduit. The sluice gates were rehabilitated in 1964. The dam is considered to be in FAIR condition. Deficiencies include lack of riprap on the upstream slopes, large trees on the embankment slopes near the retaining walls of the spillway discharge channel, and the partly collapsed stone wall on the left bank of the spillway discharge channel. Calculations indicate that the routed test flood outflow of 10,150 CFS 200 CSM would overtop the dam by about 3.53 feet, therefore the spillway capacity is considered inadequate. Assuming the pool elevation at the top of the dam, the spillway can pass a flow of 1920 CFS which represents only 19 percent of the routed test flood outflow.
- Hydrology, Limnology and Potamology
- Civil Engineering