Little Yellow 12 is a gravity dam located in Juneau County, Wisconsin, built in 1935. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 44 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Little Yellow 12
The primary purpose of Little Yellow 12 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by U.s. Department of the Interior (federal). It impounds the East Branch Little Yellow near Necedah.
The dam stands 8 feet tall and stretches 44 feet across, creates a reservoir covering 42 acres, has a maximum storage capacity of 140 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1935, 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.
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Location
| State | Wisconsin |
| County | Juneau |
| Nearest City | Necedah |
| River/Stream | East Branch Little Yellow |
| Coordinates | 44.16906, -90.18123 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 44 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 100 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 497 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | U.s. Department of the Interior |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00575 |
| Federal ID | WI00575 |
| More Info | State Dam Safety Program |