Rynearson Dam No. 1
Rynearson Dam No. 1 is an earth dam located in Juneau County, Wisconsin, built in 1939. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Rynearson Dam No. 1
The primary purpose of Rynearson Dam No. 1 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Branch Of Little Yellow Creek near Necedah, Wi.
The dam stands 24 feet tall and stretches 1,145 feet across, creates a reservoir covering 800 acres, has a maximum storage capacity of 10,292 acre-feet, and collects water from a drainage area of 14 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 07/26/2018.
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Location
| State | Wisconsin |
| County | Juneau |
| Nearest City | Necedah, Wi |
| River/Stream | Branch Of Little Yellow Creek |
| Coordinates | 44.04666, -90.14833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 1,145 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 10,292 acre-ft |
| Max Storage | 10,292 acre-ft |
| Normal Storage | 2,121 acre-ft |
| Surface Area | 800 acres |
| Drainage Area | 14 sq mi |
| Max Discharge | 5,355 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/26/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WI00825 |
| Federal ID | WI00825 |
| More Info | State Dam Safety Program |