Located in Shelby, Iowa, the Mill Picayune Watershed Site M-16-4 is a crucial water resource managed by local government authorities.
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Designed by Boyer Valley Eng & SCS in collaboration with USDA NRCS, this site serves multiple purposes including fire protection, stock, and small fish pond maintenance, as well as flood risk reduction. The earth dam, standing at a height of 50 feet and spanning a length of 675 feet, was completed in 1961 and has a storage capacity of 249 acre-feet.
Operated under the jurisdiction of the Iowa DNR, this watershed site on TR-Mill Creek boasts a surface area of 11.4 acres and a drainage area of 1.74 square miles. With a low hazard potential and a moderate risk assessment rating, the site's condition is currently not rated. While the dam's spillway type is uncontrolled, its primary purpose is to ensure the safety and sustainability of the surrounding community in Manteno. As an essential component of water resource management in the area, ongoing inspections and regulatory measures are in place to maintain the site's functionality and integrity for the long term.
Year Completed |
1961 |
Dam Length |
675 |
Dam Height |
50 |
River Or Stream |
TR-MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
11.4 |
Drainage Area |
1.74 |
Nid Storage |
249 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
50 |
Boyer River At Logan
|
417cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Maple River At Mapleton
|
323cfs |
West Nishnabotna River At Hancock
|
154cfs |