National Program for Inspection of Non-Federal Dams. Gregg Lake Dam (NH 00056), NHWRB-9.03, Contoocook River Basin, Antrim, New Hampshire. Phase I Inspection Report.
Abstract
The Gregg Lake Dam is a dry-laid stone masonry and concrete structure with earthfill embankments. The dam is approximately 9 ft. high, and about 210 ft. long including earth embankments. The dam has three stop log controlled spillways totaling approximately 21 ft. in length, a low level gated outlet, and a sluice gate outlet. Based on the visual inspection, the Gregg Lake Dam is assessed to be in fair condition. The size is intermediate with a significant hazard potential. Major concerns include apparent movement of the stone masonry and potential overtopping and erosion of low areas in the earth embankments. Keywords include: Inspection; Dam safety; Contoocook River Basin; Antrim, New Hampshire; and Gregg Lake Outlet.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADA156545
Entities
Organizations
- New England District, U.S. Army Corps of Engineers