Angus-Oslo 4
Key Takeaway
Angus-Oslo 4 is classified as low hazard in Minnesota. It was completed in 2000 and is 26 years old. Its primary use is flood risk reduction.
Physical Details
| Dam Height | 22 ft (taller than 66.3% in MN) |
| Dam Length | 26,400 ft |
| Dam Type | Earth |
| Max Storage | 8.1K acre-ft |
| Normal Storage | 4.5K acre-ft |
| Surface Area | 960 acres |
| Drainage Area | 23 sq mi |
| Max Discharge | 1,664 cfs |
| Year Completed | 2000 (26 years old) |
| Year Modified | 2005 |
| NID ID | MN01398 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
WD of Middle-Snake-Tamarac Rivers
Local Government
Nearby Dams
Brandt Angus Impoundment
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Low Hazard 22 ftMccrea 12
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Low Hazard 16 ftBlack River Imp
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Significant Hazard 14 ftGoose Lake-Pembina Wma
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Low Hazard 9 ftWarren Diversion
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Significant Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Angus-Oslo 4?
Angus-Oslo 4 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Angus-Oslo 4?
Angus-Oslo 4 is owned by WD of Middle-Snake-Tamarac Rivers (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Angus-Oslo 4 built?
Angus-Oslo 4 was completed in 2000, making it 26 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Angus-Oslo 4?
Angus-Oslo 4 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Angus-Oslo 4?
Angus-Oslo 4 has a dam height of 22 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Angus-Oslo 4 last inspected?
Angus-Oslo 4 was last inspected on August 22, 2014. Inspection dates indicate when a formal review occurred, not the results of that inspection.