Grist Mill Dam
Low HazardPoor ConditionEmergency Action Plan: Not Required
Location
| State | Massachusetts |
| County | Middlesex |
| Nearest City | Hopkinton |
| River/Stream | Cold Spring Brook |
| Coordinates | 42.21845, -71.48032 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Length | 75 ft |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Hopkinton |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/31/2023 |
| Emergency Action Plan | Not Required |