Waubonsie Cr. Watershed Site 3-3
Waubonsie Cr. Watershed Site 3-3 is an earth dam located in Mills County, Iowa, built in 1993. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Waubonsie Cr. Watershed Site 3-3
The primary purpose of Waubonsie Cr. Watershed Site 3-3 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 Mills County Swcd (local government). It impounds the Mc Pherron Creek near Bartlett.
The dam stands 49 feet tall and stretches 487 feet across, creates a reservoir covering 39 acres, has a maximum storage capacity of 1,144 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1993, the structure is 33 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/29/2020.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Iowa |
| County | Mills |
| Nearest City | Bartlett |
| River/Stream | Mc Pherron Creek |
| Coordinates | 40.91830, -95.71950 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 487 ft |
| Year Completed | 1993 (33 years old) |
Storage & Hydraulics
| NID Storage | 1,144 acre-ft |
| Max Storage | 1,144 acre-ft |
| Normal Storage | 543 acre-ft |
| Surface Area | 39 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mills County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/29/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02656 |
| Federal ID | IA02656 |
| More Info | State Dam Safety Program |