Cooley Lake Dam
Cooley Lake Dam is an earth dam located in Hampden County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
About Cooley Lake Dam
The primary purpose of Cooley Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pine Lake Realty Trust (private). It impounds the Dickinson Brook near Granville.
The dam stands 11 feet tall and stretches 110 feet across, creates a reservoir covering 66 acres, has a maximum storage capacity of 550 acre-feet, and collects water from a drainage area of 0 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 07/11/2022.
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Location
| State | Massachusetts |
| County | Hampden |
| Nearest City | Granville |
| River/Stream | Dickinson Brook |
| Coordinates | 42.05833, -72.85347 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Length | 110 ft |
Storage & Hydraulics
| NID Storage | 550 acre-ft |
| Max Storage | 550 acre-ft |
| Normal Storage | 390 acre-ft |
| Surface Area | 66 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Pine Lake Realty Trust |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/11/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00706 |
| Federal ID | MA00706 |
| More Info | State Dam Safety Program |