National Dam Inspection Program. Ulbrich Reservoir Dam (CT 00038). Connecticut Coastal, Spring Brook, Wallingford, Connecticut. Phase I Inspection Report.
Abstract
Ulbrich Reservoir Dam, also shown as Spring Brook Reservoir Dam, is an earthfill dam, about 2000 feet long and 17 feet high, with a minimum crest with of 16 feet. A 20 foot long concrete ogee spillway with steel flashboards is located 350 feet from the right abutment. The storage at top of dam is 4090 acre-feet. There is a valve extension operating stem controlling a 12-inch diameter outflow pipe located about 700 feet from the left abutment. The purpose of the reservoir is to provide water supply storage capacity. In relation to this, a 16-inch force main from MacKenzie Reservoir discharges to Ulbrich Reservoir. A 16-inch force main leaves Ulbrich Reservoir sending water to Pistapaug Pond, which directs water into the Wallingford Water System. The dam was found to be in good condition. Growth of brush and trees on the upstream slope, crest, downstream slope and downstream toe in the spillway and outlet channels was noted. Evidence was found of a stream channel on the downstream slope and toe of the dam near the left abutment. The inspection also revealed minor cracks and spalling of the spillway apron. The spillway with water at the top of the dam and with the flashboards in place will pass 1220 cfs or 1625% of the test flood outflow.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1981
- Accession Number
- ADA142651
Entities
Organizations
- New England District, U.S. Army Corps of Engineers