Whitewater Reservoir
Whitewater Reservoir is an earth dam located in St. Louis County, Minnesota, built in 1954. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Whitewater Reservoir
The primary purpose of Whitewater Reservoir is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Mn Power And Light (public utility). It impounds the St. Louis River-tr near Forbes.
The dam stands 40 feet tall and stretches 3,165 feet across, creates a reservoir covering 1,233 acres, has a maximum storage capacity of 26,873 acre-feet, and collects water from a drainage area of 112 square miles. Completed in 1954, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/05/2022.
At 40 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Minnesota |
| County | St. Louis |
| Nearest City | Forbes |
| River/Stream | St. Louis River-tr |
| Coordinates | 47.49048, -92.18285 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 35 ft |
| Dam Length | 3,165 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 26,873 acre-ft |
| Max Storage | 26,873 acre-ft |
| Normal Storage | 20,562 acre-ft |
| Surface Area | 1,233 acres |
| Drainage Area | 112 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | MN Power and Light |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/05/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00770 |
| Federal ID | MN00770 |
| More Info | State Dam Safety Program |