Lower Mill Pond Dam
Lower Mill Pond Dam is an earth dam located in Hampshire County, Massachusetts. It carries a Significant hazard potential classification and has a fair condition assessment.
About Lower Mill Pond Dam
The primary purpose of Lower 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 City Of Easthampton;one Industrial Lofts Llc (local government). It impounds the Broad Brook near Easthampton.
The dam stands 24 feet tall and stretches 340 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 375 acre-feet, and collects water from a drainage area of 11 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 11/17/2021.
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Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Easthampton |
| River/Stream | Broad Brook |
| Coordinates | 42.27574, -72.65493 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Length | 340 ft |
Storage & Hydraulics
| NID Storage | 375 acre-ft |
| Max Storage | 375 acre-ft |
| Normal Storage | 240 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 1,175 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Easthampton;One Industrial Lofts LLC |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 11/17/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00486 |
| Federal ID | MA00486 |
| More Info | State Dam Safety Program |