National Program for Inspection of Non-Federal Dams. Eagleville Lake Dam (CT 00161), Thames River Basin, Coventry-Mansfield, Connecticut. Phase I Inspection Report.
CORPS OF ENGINEERS WALTHAM MA NEW ENGLAND DIV
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Eagleville Lake Dam is an earth embankment structure with a masonry spillway. The impoundment, Eagleville Lake, was formerly used for industrial power and process water but is now used for recreation only. The dam was constructed around 1860. Records indicate failure of the right embankment by overtopping from storms in 1938 and 1955. Reconstruction followed each failure. The dam is 22 feet in height and approximately 350 feet in length including the spillway. The masonry spillway has a crest length of 170 feet. The outlet works is located at the left abutment of the spillway and is constructed of mortared stone masonry. A recently installed 42 inch square gate 1970 is the outlet works for the reservoir. Due to its age, Eagleville Lake Dam was neither designed nor constructed by present state-of-the-art procedures. Based upon the visual inspection at the site and the lack of engineering, operational and maintenance data, there are areas of concern which must be corrected to assure the long-term performance of this dam. The dam is considered to be in FAIR condition. Deficiencies include trees growing on the dam embankment, the potential for overtopping due to the limited discharge capacity of the overflow spillway, and erosion areas on the embankments. All these deficiencies can cause failure of the dam. The maximum spillway discharge of 11,300 CFS represents only 31 percent of the test flood outflow.
- Hydrology, Limnology and Potamology
- Civil Engineering