Four Mile Pond Dam is an earth dam located in Essex County, Massachusetts, built in 1900. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 70 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 Four Mile Pond Dam
The primary purpose of Four Mile Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Four Mile Pond Preservation Group, Inc. (private). It impounds the Pye Brook near Boxford.
The dam stands 10 feet tall and stretches 70 feet across, creates a reservoir covering 42 acres, has a maximum storage capacity of 533 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1900, the structure is over a century 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 10/23/2015. That was over 10 years ago.
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Location
| State | Massachusetts |
| County | Essex |
| Nearest City | Boxford |
| River/Stream | Pye Brook |
| Coordinates | 42.67909, -70.99846 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 70 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 533 acre-ft |
| Max Storage | 533 acre-ft |
| Normal Storage | 134 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Four Mile Pond Preservation Group, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/23/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA01201 |
| Federal ID | MA01201 |
| More Info | State Dam Safety Program |