Granite Lake Dam
Granite Lake Dam is an earth dam located in Worcester County, Massachusetts, built in 1924. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Granite Lake Dam
The primary purpose of Granite Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Charlton (local government). It impounds the Tributary Of Little River near Charlton.
The dam stands 18 feet tall and stretches 620 feet across, creates a reservoir covering 198 acres, has a maximum storage capacity of 1,710 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1924, the structure is over a century old.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/19/2019.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Charlton |
| River/Stream | Tributary Of Little River |
| Coordinates | 42.10463, -71.92952 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Length | 620 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 1,710 acre-ft |
| Max Storage | 1,710 acre-ft |
| Normal Storage | 1,010 acre-ft |
| Surface Area | 198 acres |
| Drainage Area | 7 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Charlton |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/19/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00105 |
| Federal ID | MA00105 |
| More Info | State Dam Safety Program |