D.F. Riley Grist Mill Dam
Massachusetts, Hampshire County, Mill River
Location
| State | Massachusetts |
| County | Hampshire |
| River | Mill River |
| Coordinates | 42.37147, -72.60830 |
Physical Characteristics
| NID Height | 16 ft |
| Dam Height | - |
| Dam Length | 200 ft |
| NID Storage | 580 acre-ft |
| Max Storage | 580 acre-ft |
| Surface Area | 58 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Unsatisfactory |
| EAP Status | Yes |
| Last Inspection | April 8, 2025 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1881 |
| Primary Purpose | Recreation |
| Dam Type | Stone |
| Owner Type | Private |
| Owner | Mill River Storage, LLC;Old Mill Enterprises, LLC |
| Other Name | N/A |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.