Erredge Group Detention is an earth dam located in Goodhue County, Minnesota, built in 1965. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 475 ft long, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Erredge Group Detention
The primary purpose of Erredge Group Detention 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 Erredge, James (private). It impounds the Bitter Creek near Zumbrota.
The dam stands 28 feet tall and stretches 475 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 97 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1965, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 07/13/2021.
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Location
| State | Minnesota |
| County | Goodhue |
| Nearest City | Zumbrota |
| River/Stream | Bitter Creek |
| Coordinates | 44.27485, -92.69667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 25 ft |
| Dam Length | 475 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 97 acre-ft |
| Max Storage | 97 acre-ft |
| Normal Storage | 57 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 340 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Erredge, James |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/13/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00455 |
| Federal ID | MN00455 |
| More Info | State Dam Safety Program |