O'brien Pond Dam
O'brien Pond Dam is an earth dam located in Hampshire County, Massachusetts. It carries a Significant hazard potential classification and has a poor condition assessment.
About O'brien Pond Dam
The primary purpose of O'brien Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Unknown. It impounds the Flat Brook - Tributary To Ware near Ware.
The dam stands 13 feet tall and stretches 200 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 28 acre-feet, and collects water from a drainage area of 5 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 01/07/2021.
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Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Ware |
| River/Stream | Flat Brook - Tributary To Ware |
| Coordinates | 42.26382, -72.27317 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Length | 200 ft |
Storage & Hydraulics
| NID Storage | 28 acre-ft |
| Max Storage | 28 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 180 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Unknown |
| Owner Type | Not Listed |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 01/07/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA02710 |
| Federal ID | MA02710 |
| More Info | State Dam Safety Program |