Pine Island Lake Dam
Pine Island Lake Dam is an earth dam located in Hampshire County, Massachusetts, built in 1920. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Pine Island Lake Dam
The primary purpose of Pine Island Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Pine Island Lake, Inc. (private). It impounds the Tributary Of North Branch Of Manhan River near Westhampton.
The dam stands 25 feet tall and stretches 80 feet across, creates a reservoir covering 71 acres, has a maximum storage capacity of 1,062 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1920, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/29/2022.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Massachusetts dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Westhampton |
| River/Stream | Tributary Of North Branch Of Manhan River |
| Coordinates | 42.33689, -72.77629 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Length | 80 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 1,062 acre-ft |
| Max Storage | 1,062 acre-ft |
| Normal Storage | 839 acre-ft |
| Surface Area | 71 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 95 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Pine Island Lake, Inc. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/29/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00595 |
| Federal ID | MA00595 |
| More Info | State Dam Safety Program |