Lake Holbrook Dam is an earth dam located in Norfolk County, Massachusetts, built in 1920. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 300 ft long. 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 Lake Holbrook Dam
The primary purpose of Lake Holbrook Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town of Holbrook (local government). It impounds the Cochato River near Holbrook.
The dam stands 10 feet tall and stretches 300 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 185 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1920, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 11/12/2015. That was over 10 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Holbrook |
| River/Stream | Cochato River |
| Coordinates | 42.14712, -71.01944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 300 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 185 acre-ft |
| Max Storage | 185 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Holbrook |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/12/2015 |
| Emergency Action Plan | No |
Identifiers
| NID ID | MA01163 |
| Federal ID | MA01163 |
| More Info | State Dam Safety Program |