Mill Pond Dam is a masonry dam located in Barnstable County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 7 ft7 ft tall and 52 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Mill Pond Dam
The primary purpose of Mill Pond 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 Barnstable (local government). It impounds the Marstons Mill River, Formerly Goodspeed River near Barnstable.
The dam stands 7 feet tall and stretches 52 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 22 acre-feet, and collects water from a drainage area of 13 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 07/13/2020.
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Location
| State | Massachusetts |
| County | Barnstable |
| Nearest City | Barnstable |
| River/Stream | Marstons Mill River, Formerly Goodspeed River |
| Coordinates | 41.65144, -70.41461 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 7 ft |
| Dam Length | 52.5 ft |
Storage & Hydraulics
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 13 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Barnstable |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/13/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA02392 |
| Federal ID | MA02392 |
| More Info | State Dam Safety Program |