Mill Pond Dam is an earth dam located in Middlesex County, Massachusetts, built in 1958. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 120 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 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 Ma Department of Transportation (state). It impounds the Tributary of Beaver Brook near Littleton.
The dam stands 16 feet tall and stretches 120 feet across, has a maximum storage capacity of 442 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1958, 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 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 07/31/2023.
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Location
| State | Massachusetts |
| County | Middlesex |
| Nearest City | Littleton |
| River/Stream | Tributary of Beaver Brook |
| Coordinates | 42.53490, -71.49767 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Length | 120 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 442 acre-ft |
| Max Storage | 442 acre-ft |
| Normal Storage | 93 acre-ft |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Ma Department of Transportation |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/31/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA01149 |
| Federal ID | MA01149 |
| More Info | State Dam Safety Program |