Bear Swamp - Dike A
Bear Swamp - Dike A is a rockfill dam located in Franklin County, Massachusetts, built in 1974. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Bear Swamp - Dike A
The primary purpose of Bear Swamp - Dike A is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Deerfield River near Charlemont.
The dam stands 23 feet tall and stretches 352 feet across, creates a reservoir covering 118 acres, has a maximum storage capacity of 5,100 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1974, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 09/13/2022.
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Location
| State | Massachusetts |
| County | Franklin |
| Nearest City | Charlemont |
| River/Stream | Deerfield River |
| Coordinates | 42.68510, -72.95840 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 352 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 5,100 acre-ft |
| Max Storage | 5,100 acre-ft |
| Normal Storage | 5,100 acre-ft |
| Surface Area | 118 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00976 |
| Federal ID | MA00976S001 |
| More Info | State Dam Safety Program |