Cobble Mountain Reservoir Dam
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Massachusetts |
| County | Hampden |
| Nearest City | Russell |
| River/Stream | Little River |
| Coordinates | 42.12203, -72.89163 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 245 ft |
| Dam Length | 730 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 97,200 acre-ft |
| Max Storage | 97,200 acre-ft |
| Normal Storage | 72,930 acre-ft |
| Surface Area | 1,150 acres |
| Drainage Area | 45 sq mi |
| Max Discharge | 33,540 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Springfield Water and Sewer Commission |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/14/2023 |
| Emergency Action Plan | Yes |