Little Yellow 12 is a gravity dam located on the East Branch Little Yellow River in Necedah, Wisconsin.
Wind
Humidity
Built in 1935 for irrigation purposes, the dam stands at 8 feet tall and has a storage capacity of 140 acre-feet. The dam also serves for recreation and water supply, with a normal storage of 100 acre-feet and a maximum discharge of 497 cubic feet per second.
Despite its low hazard potential, Little Yellow 12 is considered to have a very high risk due to its age and condition assessment being not rated. The dam has not been inspected in recent years, with the last inspection date unknown. While the emergency action plan status and risk management measures are unclear, the dam's location in a high-risk area underscores the importance of regular monitoring and maintenance to ensure public safety and water resource sustainability in the region.
Year Completed |
1935 |
Dam Length |
44 |
Dam Height |
8 |
River Or Stream |
EAST BRANCH LITTLE YELLOW |
Primary Dam Type |
Gravity |
Surface Area |
42 |
Hydraulic Height |
7 |
Drainage Area |
7.2 |
Nid Storage |
140 |
Structural Height |
8 |
Hazard Potential |
Low |
Nid Height |
8 |
Yellow River At Babcock
|
44cfs |
Yellow River At Necedah
|
52cfs |
Tenmile Creek Near Nekoosa
|
27cfs |
Lemonweir River At New Lisbon
|
261cfs |
Wisconsin River At Wisconsin Rapids
|
1960cfs |
Black River Ds St Hwy 54 @ Black River Falls
|
514cfs |
| Location | Reservations | Toilets |
|---|---|---|
Juneau County Wilderness Park Campground
|
||
Petenwell County Park Annex Campground
|
||
Petenwell County Park Main Campground
|
Petenwell Lake - 20th Drive Access - Wisconsin River Power Company (WRPCO)
Petenwell Lake - Wilderness Park Access
Petenwell Lake -- 20th Drive Access
Wisconsin River / Petenwell Flowage -- Access off Blackhawk Dr.
Petenwell Lake -- Petenwell Park Access off Bighorn Dr. (Adams Co)
Wisconsin River -- Access at Hwy 21 - Town Of Strongs Prairie