Parnell Impoundment
Parnell Impoundment is an earth dam located in Polk County, Minnesota, built in 1998. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Parnell Impoundment
The primary purpose of Parnell Impoundment is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Wd Of Red Lake (local government). It impounds the Grand Marais Creek-tr near Oslo.
The dam stands 22 feet tall, creates a reservoir covering 23 acres, has a maximum storage capacity of 751 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1998, the structure is 28 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/10/2022.
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Location
| State | Minnesota |
| County | Polk |
| Nearest City | Oslo |
| River/Stream | Grand Marais Creek-tr |
| Coordinates | 47.92506, -96.56817 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 751 acre-ft |
| Max Storage | 751 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | WD of Red Lake |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN01404 |
| Federal ID | MN01404 |
| More Info | State Dam Safety Program |