Located in Mills County, Iowa, the Waubonsie Creek Watershed Site M-1 is a significant earth dam structure designed by the USDA NRCS in 1978.
Wind
Humidity
This local government-owned site spans 710 feet in length and stands at a height of 42 feet, providing flood risk reduction and recreational opportunities for the surrounding area. With a drainage area of 19.69 square miles and a storage capacity of 968 acre-feet, the dam plays a crucial role in managing water resources in the region.
Managed by the Iowa DNR, this dam on the Waubonsie Creek features an uncontrolled spillway with a width of 18 feet and is categorized as having a low hazard potential and satisfactory condition assessment. The site is regularly inspected every 5 years, with the last inspection conducted in July 2020. Despite its moderate risk assessment, the dam continues to meet regulatory guidelines and serves as a vital infrastructure for water management and environmental conservation efforts in the area. Water resource and climate enthusiasts are encouraged to visit this site to learn more about its role in safeguarding the local ecosystem.
Year Completed |
1978 |
Dam Length |
710 |
Dam Height |
42 |
River Or Stream |
TR-WAUBONSIE CREEK |
Primary Dam Type |
Earth |
Surface Area |
38 |
Drainage Area |
19.69 |
Nid Storage |
968 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
42 |
West Nishnabotna River At Randolph
|
420cfs |
Weeping Water Creek At Union
|
20cfs |
Missouri River At Nebraska City
|
25100cfs |
Nishnabotna River Above Hamburg
|
605cfs |
Platte R At Louisville Ne
|
6300cfs |
Missouri River At Omaha
|
17700cfs |