Rasmussen Dam, located in Patterson, Iowa, is a privately-owned structure designed by NRCS with a primary purpose of grade stabilization.
Wind
Humidity
Completed in 2020, this earth dam stands at a height of 33 feet and has a length of 409 feet. With a storage capacity of 57 acre-feet and a drainage area of 0.13 square miles, the dam serves as a vital resource for managing water flow in the tributary to Fletcher Branch.
Despite being uncontrolled, the spillway of Rasmussen Dam has a width of 20 feet, allowing for a maximum discharge of 29 cubic feet per second. With a hazard potential rated as low and a moderate risk assessment, this dam plays a crucial role in mitigating flood risks in the area. While the condition assessment is not rated, the dam is inspected, permitted, and regulated by the Iowa DNR, ensuring its structural integrity and compliance with state regulations. For water resource and climate enthusiasts, Rasmussen Dam represents a key infrastructure for water management and flood control in Madison County, Iowa.
Year Completed |
2020 |
Dam Length |
409 |
Dam Height |
33 |
River Or Stream |
Tributary to Fletcher Branch |
Primary Dam Type |
Earth |
Surface Area |
3.9 |
Hydraulic Height |
33 |
Drainage Area |
0.13 |
Nid Storage |
57 |
Structural Height |
33 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Raccoon River At Van Meter
|
1640cfs |
South Raccoon River At Redfield
|
268cfs |
Raccoon River Near West Des Moines
|
1300cfs |
North River Near Norwalk
|
48cfs |
Raccoon River At 63rd Street At Des Moines
|
587cfs |
Middle River Near Indianola
|
48cfs |