Granite Falls
Key Takeaway
Granite Falls is classified as low hazard in Minnesota. It was completed in 1911 and is 115 years old. Its primary use is hydroelectric.
Physical Details
| Dam Height | 21 ft (taller than 63.7% in MN) |
| Dam Length | 300 ft |
| Dam Type | Gravity |
| Max Storage | 252 acre-ft |
| Normal Storage | 252 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 6,370 sq mi |
| Max Discharge | 36,800 cfs |
| Year Completed | 1911 (115 years old) |
| NID ID | MN00510 |
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
Granite Falls, City of
Local Government
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Granite Falls?
Granite Falls 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 Granite Falls?
Granite Falls is owned by Granite Falls, City of (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Granite Falls built?
Granite Falls was completed in 1911, making it 115 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 Granite Falls?
Granite Falls serves the following purposes: Hydroelectric. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Granite Falls?
Granite Falls has a dam height of 21 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 Granite Falls last inspected?
Granite Falls was last inspected on August 8, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.