Bone Mill Pond Dam is an earth dam located in Tolland County, Connecticut. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 15 ft15 ft tall and 140 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Bone Mill Pond Dam
Bone Mill Pond Dam is a dam in Tolland, Connecticut. The dam is owned by University of Connecticut - Office of Environmental Planning (state). It impounds the Cedar Swamp Brook Trib to Willimantic River near Mansfield.
The dam stands 15 feet tall and stretches 140 feet across, creates a reservoir covering 1 acres, and collects water from a drainage area of 4 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. The most recent inspection on record was 10/17/2023.
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Location
| State | Connecticut |
| County | Tolland |
| Nearest City | Mansfield |
| River/Stream | Cedar Swamp Brook Trib to Willimantic River |
| Coordinates | 41.80313, -72.28067 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 140 ft |
Storage & Hydraulics
| Surface Area | 1 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | University of Connecticut - Office of Environmental Planning |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 10/17/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CT01830 |
| Federal ID | CT01830 |
| More Info | State Dam Safety Program |