High Lake
Key Takeaway
High Lake is classified as high hazard in Montana. It was completed in 1938 and is 88 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 30 ft (taller than 82.7% in MT) |
| Dam Length | 500 ft |
| Dam Type | Earth |
| Normal Storage | 743 acre-ft |
| Surface Area | 44 acres |
| Drainage Area | 1 sq mi |
| Year Completed | 1938 (88 years old) |
| NID ID | MT01171 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BLODGETT CREEK IRRIGATION DISTRICT
Local Government
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Low Hazard 14 ftFrequently Asked Questions
What is the hazard classification of High Lake?
High Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates High Lake?
High Lake is owned by BLODGETT CREEK IRRIGATION DISTRICT (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was High Lake built?
High Lake was completed in 1938, making it 88 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 High Lake?
High Lake serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is High Lake?
High Lake has a dam height of 30 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.