Gabbro Lake 2 is a rockfill dam located in Lake County, Minnesota, built in 1924. It carries a Low hazard potential classification.
Dam profile
NID height · 7 ft7 ft tall and 305 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Gabbro Lake 2
The primary purpose of Gabbro Lake 2 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usda Fs (federal). It impounds the Isabella River near Winton.
The dam stands 7 feet tall and stretches 305 feet across, creates a reservoir covering 154 acres, has a maximum storage capacity of 10,300 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1924, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 01/01/1974. That was over 52 years ago.
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Location
| State | Minnesota |
| County | Lake |
| Nearest City | Winton |
| River/Stream | Isabella River |
| Coordinates | 47.86280, -91.62701 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 305 ft |
| Year Completed | 1924 (102 years old) |
Storage & Hydraulics
| NID Storage | 10,300 acre-ft |
| Max Storage | 10,300 acre-ft |
| Normal Storage | 10,300 acre-ft |
| Surface Area | 154 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,500 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Usda Fs |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/01/1974 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00647 |
| Federal ID | MN00647 |
| More Info | State Dam Safety Program |