Connor Pond Dam is a concrete dam located in Worcester County, Massachusetts, built in 1968. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 145 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Connor Pond Dam
The primary purpose of Connor Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Swift River Valley Trust (private). It impounds the East Branch Swift River near Petersham.
The dam stands 11 feet tall and stretches 145 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 130 acre-feet, and collects water from a drainage area of 21 square miles. Completed in 1968, the structure is well into its service life at over 50 years old.
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 02/21/2024.
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Location
| State | Massachusetts |
| County | Worcester |
| Nearest City | Petersham |
| River/Stream | East Branch Swift River |
| Coordinates | 42.46111, -72.16452 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 11 ft |
| Dam Length | 145 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 21 sq mi |
| Max Discharge | 815 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Swift River Valley Trust |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/21/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA00651 |
| Federal ID | MA00651 |
| More Info | State Dam Safety Program |