Tunnel Dam Hydro Station
Significant HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | Connecticut |
| County | New London |
| Nearest City | PRESTON |
| River/Stream | QUINEBAUG RIVER |
| Coordinates | 41.55496, -72.04095 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 780 ft |
| Year Completed | 1906 (120 years old) |
Storage & Hydraulics
| NID Storage | 1,650 acre-ft |
| Max Storage | 1,650 acre-ft |
| Normal Storage | 1,650 acre-ft |
| Surface Area | 100 acres |
| Drainage Area | 744 sq mi |
| Max Discharge | 33,940 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | FirstLight Power Resources |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/18/2021 |
| Emergency Action Plan | Yes |