Osterberg Lake is an earth dam located in Pope County, Minnesota, built in 1979. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 11 ft11 ft tall and 212 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Osterberg Lake
Osterberg Lake is a dam in Pope, Minnesota. The dam is owned by Mndnr-fisheries (state). It impounds the Chippewa River-tr near Cyrus.
The dam stands 11 feet tall and stretches 212 feet across, creates a reservoir covering 120 acres, has a maximum storage capacity of 360 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1979, the structure is 47 years 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/04/2017.
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Location
| State | Minnesota |
| County | Pope |
| Nearest City | Cyrus |
| River/Stream | Chippewa River-tr |
| Coordinates | 45.72809, -95.73141 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 9 ft |
| Dam Length | 212 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 360 acre-ft |
| Max Storage | 360 acre-ft |
| Normal Storage | 340 acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 419 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Mndnr-fisheries |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/04/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00897 |
| Federal ID | MN00897 |
| More Info | State Dam Safety Program |