Jim Walter Dam
Jim Walter Dam is an earth dam located in Adair County, Iowa, built in 2018. It carries a Low hazard potential classification.
About Jim Walter Dam
The primary purpose of Jim Walter Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Jim Walter (private). It impounds the Trib To Ninemile Creek near Macksburg.
The dam stands 26 feet tall and stretches 386 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 23 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2018, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Iowa |
| County | Adair |
| Nearest City | Macksburg |
| River/Stream | Trib To Ninemile Creek |
| Coordinates | 41.24110, -94.29190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 386 ft |
| Year Completed | 2018 (8 years old) |
Storage & Hydraulics
| NID Storage | 23 acre-ft |
| Max Storage | 23 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 179 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Jim Walter |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04305 |
| Federal ID | IA04305 |
| More Info | State Dam Safety Program |