Danielson Mill Dam
Danielson Mill Dam is an earth dam located in Norfolk County, Massachusetts. It carries a Significant hazard potential classification and has a poor condition assessment.
About Danielson Mill Dam
The primary purpose of Danielson Mill 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 Medfield (local government). It impounds the Great Brook, Tributary To West Branch Of Nantasket River near Medfield.
The dam stands 7 feet tall and stretches 225 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 44 acre-feet, and collects water from a drainage area of 0 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/30/2020.
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Location
| State | Massachusetts |
| County | Norfolk |
| Nearest City | Medfield |
| River/Stream | Great Brook, Tributary To West Branch Of Nantasket River |
| Coordinates | 42.17054, -71.29507 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Length | 225 ft |
Storage & Hydraulics
| NID Storage | 44 acre-ft |
| Max Storage | 44 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 32 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Medfield |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/30/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA03351 |
| Federal ID | MA03351 |
| More Info | State Dam Safety Program |