Commers Dam is an earth dam located in Montgomery County, Iowa, built in 2023. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 669 ft long, taller than 76% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Commers Dam
The primary purpose of Commers Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Dr James Commers (private). It impounds the Unnamed Trib to Tarkio Creek near Stanton.
The dam stands 33 feet tall and stretches 669 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 109 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2023, 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.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Montgomery |
| Nearest City | Stanton |
| River/Stream | Unnamed Trib to Tarkio Creek |
| Coordinates | 41.01720, -95.11910 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 669 ft |
| Year Completed | 2023 (3 years old) |
Storage & Hydraulics
| NID Storage | 109 acre-ft |
| Max Storage | 109 acre-ft |
| Normal Storage | 19 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Dr James Commers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04416 |
| Federal ID | IA04416 |
| More Info | State Dam Safety Program |