Located in Plymouth County, Iowa, the West Sunnyside Watershed Site C-1-1 is a low hazard potential earth dam completed in 1959 by the USDA NRCS.
Wind
Humidity
The primary purpose of this dam is to provide fire protection, stock, and small fish pond capabilities, as well as flood risk reduction. With a dam height of 34 feet and a length of 545 feet, it has a storage capacity of 60 acre-feet and covers a surface area of 3.8 acres within a drainage area of 0.32 square miles.
Managed by the Iowa DNR, this dam is state regulated, permitted, inspected, and enforced. It is situated along TR-Broken Kettle Creek in Sioux City, with a spillway type of uncontrolled and a moderate risk assessment rating of 3. Despite being last inspected in 1963 and currently not rated for its condition, the West Sunnyside Watershed Site C-1-1 continues to serve its designated purposes effectively within the local government ownership jurisdiction.
Overall, this dam serves as a vital water resource infrastructure for the community, providing essential functions while mitigating flood risks and ensuring public safety. Its historical construction by the NRCS and continued state oversight under the Iowa DNR highlight the importance of sustainable water management practices in the region, showcasing the intersection of environmental conservation and climate resilience efforts in the West Sunnyside Watershed area.
Year Completed |
1959 |
Dam Length |
545 |
Dam Height |
34 |
River Or Stream |
TR-BROKEN KETTLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.8 |
Drainage Area |
0.32 |
Nid Storage |
60 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Perry Creek Near Milnerville
|
25cfs |
Big Sioux River At Akron
|
816cfs |
Floyd River At James
|
187cfs |
Missouri River At Sioux City
|
13700cfs |
Vermillion River Nr Vermillion Sd
|
33cfs |
Omaha Cr At Homer
|
45cfs |