Nihles is an earth dam located in Grant County, Wisconsin. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 475 ft long, taller than 50% 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 Nihles
The primary purpose of Nihles 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 Crary Builders, Inc. (private). It impounds the Unnamed Trib to Bacon Branch.
The dam stands 25 feet tall and stretches 475 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 59 acre-feet, and collects water from a drainage area of 0 square miles.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 07/25/2017.
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Location
| State | Wisconsin |
| County | Grant |
| River/Stream | Unnamed Trib to Bacon Branch |
| Coordinates | 42.86175, -90.50561 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 475 ft |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 225 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Crary Builders, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/25/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI01233 |
| Federal ID | WI01233 |
| More Info | State Dam Safety Program |