Rocky Hill Pond Dam is an earth dam located in Hampshire County, Massachusetts, built in 1924. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 315 ft long, taller than 55% of U.S. dams with a recorded height. 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 Rocky Hill Pond Dam
The primary purpose of Rocky Hill Pond Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Tcb Hospital Hill, LLC (private). It impounds the Tributary of Mill River Diversion near Northampton.
The dam stands 26 feet tall and stretches 315 feet across, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1924, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/31/2006. That was over 20 years ago.
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Location
| State | Massachusetts |
| County | Hampshire |
| Nearest City | Northampton |
| River/Stream | Tributary of Mill River Diversion |
| Coordinates | 42.30650, -72.66030 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Length | 315 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 25 acre-ft |
| Drainage Area | 0 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Tcb Hospital Hill, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/31/2006 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MA00495 |
| Federal ID | MA00495 |
| More Info | State Dam Safety Program |