National Program for Inspection of Non-Federal Dams. Factory Hollow Dam (MA 00063), Factory Hollow Dike (MA 00597), Connecticut River Basin, Amherst, Massachusetts. Phase I Inspection Report.
Abstract
Factory Hollow Dam is a 110-foot long stone masonry dam built in 1895. The dam which has a maximum height of 32.5 feet is the spillway. The top of the dam varies between Elevation (El) 223 and 224.7 (National Geodetic Vertical Datum of 1929). The pond is presently used for recreational purposes. There are a total of three outlets at the dam. A crane would be required to operate the upper level outlets. The crane would have to be located in the streambed downstream of the dam. During the test flood, due to the discharge over the spillway, this would not be possible resulting in all of the outlets being inoperable. The opening of these outlets are required to lower the pond for access to the low level outlet manhole. Factory Hollow Dike is a 140-foot long earthfill embankment located 135 feet northwest of the dam and is separated from the dam by a rock outcrop. The dike has a maximum height of 3 feet and the top is El 230. There is no spillway or outlet at the dike; the pond level is controlled at Factory Hollow Dam. The following deficiencies were observed at Factory Hollow Dam: inaccessible and inoperable outlets; seepage at the base of the dam and along both abutments; leakage through the low level outlet and penstock; mortar missing from the stone masonry on top of the dam at right abutment; and a lack of erosion control at the toe of the dam to prevent the falling water from washing out the toe area. The following deficiencies were observed at the Factory Hollow Dike: trees and brush growing on the upstream face of the dike; no erosion protection on the upstream face; and minor erosion of the upstream face of the embankment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1980
- Accession Number
- ADA145261
Entities
Organizations
- New England District, U.S. Army Corps of Engineers