Pony Creek Watershed Site 10
Pony Creek Watershed Site 10 is an earth dam located in Mills County, Iowa, built in 1966. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Pony Creek Watershed Site 10
The primary purpose of Pony Creek Watershed Site 10 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Mills County Swcd (local government). It impounds the Tr-pony Creek near Pacific Junction.
The dam stands 60 feet tall and stretches 550 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 700 acre-feet, and collects water from a drainage area of 10 square miles. Completed in 1966, the structure is well into its service life at over 50 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 08/19/2021.
At 60 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Iowa |
| County | Mills |
| Nearest City | Pacific Junction |
| River/Stream | Tr-pony Creek |
| Coordinates | 41.10030, -95.78610 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 60 ft |
| Dam Height | 60 ft |
| Dam Length | 550 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 700 acre-ft |
| Max Storage | 700 acre-ft |
| Normal Storage | 320 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 10 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mills County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/19/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00677 |
| Federal ID | IA00677 |
| More Info | State Dam Safety Program |