Borgstrom-erin Prairie Twn
Borgstrom-erin Prairie Twn is an earth dam located in St. Croix County, Wisconsin, built in 1973. It carries a Low hazard potential classification.
About Borgstrom-erin Prairie Twn
The primary purpose of Borgstrom-erin Prairie Twn 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 Borgstrom, Eleanore (private). It impounds the Tributary To Willow River.
The dam stands 29 feet tall and stretches 540 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1973, the structure is well into its service life at over 50 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. The most recent inspection on record was 08/13/2020.
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Location
| State | Wisconsin |
| County | St. Croix |
| Nearest City | None |
| River/Stream | Tributary To Willow River |
| Coordinates | 45.09379, -92.44472 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 540 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Borgstrom, Eleanore |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/13/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00988 |
| Federal ID | WI00988 |
| More Info | State Dam Safety Program |