Lost Wilderness Lake Northern Dam
Lost Wilderness Lake Northern Dam is an earth dam located in Hampden County, Massachusetts, built in 1976. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lost Wilderness Lake Northern Dam
The primary purpose of Lost Wilderness Lake Northern Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Ma Department Of Conservation & Recreation (state). It impounds the Unnamed Tributary To Farmington River Main Branch near Tolland.
The dam stands 23 feet tall and stretches 240 feet across, creates a reservoir covering 134 acres, has a maximum storage capacity of 2,000 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1976, the structure is 50 years old.
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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 04/28/2020.
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Location
| State | Massachusetts |
| County | Hampden |
| Nearest City | Tolland |
| River/Stream | Unnamed Tributary To Farmington River Main Branch |
| Coordinates | 42.10456, -73.05384 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Length | 240 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 2,000 acre-ft |
| Max Storage | 2,000 acre-ft |
| Normal Storage | 1,200 acre-ft |
| Surface Area | 134 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 11 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | MA Department of Conservation & Recreation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/28/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MA01059 |
| Federal ID | MA01059 |
| More Info | State Dam Safety Program |