Mc Donald Dam, located in Thayer, Iowa, is a privately owned structure primarily used for fire protection, stock, or as a small fish pond.
Wind
Humidity
Constructed in 2001 by the NRCS, this earth dam stands at a height of 30 feet and spans 483 feet in length. With a storage capacity of 138 acre-feet and a surface area of 7.6 acres, the dam serves the important purpose of regulating water flow in the Twomile Creek.
Managed and regulated by the Iowa Department of Natural Resources, Mc Donald Dam has a low hazard potential and a moderate risk assessment rating. While the dam's condition is currently not rated, it undergoes regular inspections, permitting, and enforcement to ensure its safety and functionality. With a spillway width of 2 feet and uncontrolled spillway type, the dam is designed to handle potential overflow events effectively.
As a key infrastructure for water resource management in Union County, Iowa, Mc Donald Dam plays a vital role in protecting the surrounding area from flooding and ensuring a stable water supply for various purposes. Enthusiasts of water resources and climate resilience will find this dam an intriguing example of engineering ingenuity and environmental stewardship in action.
Year Completed |
2001 |
Dam Length |
483 |
Dam Height |
30 |
River Or Stream |
TR- TWOMILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.6 |
Drainage Area |
0.56 |
Nid Storage |
138 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Raccoon River At Van Meter
|
1640cfs |
North River Near Norwalk
|
48cfs |
Thompson River At Davis City
|
22cfs |
Middle River Near Indianola
|
48cfs |
Raccoon River Near West Des Moines
|
1300cfs |
South River Near Ackworth
|
18cfs |