National Program for Inspection of Non-Federal Dams. Deep Hollow Reservoir Dam (CT 00394), Connecticut River Basin, Chester, Connecticut. Phase I Inspection Report

摘要

Deep Hollow Reservoir Dam is an earth embankment with a rubble masonry downstream face. The dam is curved and approximately 352 feet long (including the spillway) with a maximum height of 24.0 feet. The crest is approximately 20.0 feet in width. The spillway is a rubble masonry structure centered on the embankment and is a broad-crested, curved overflow weir 60 feet long. The outlet works is a gated 12 inch diameter pipe through the embankment. The dam was built in 1854. The dam is considered to be in fair condition. Visible signs of concern are: a leaking and inadequately sized outlet discharge pipe, extensive seepage zones at the downstream toe, and stumps and rotting roots adjacent to the dam. The spillway can safely pass 509 cfs, or 14 percent of the test flood.