Twin Ponies Watershed Site 17a
Twin Ponies Watershed Site 17a is an earth dam located in Pottawattamie County, Iowa, built in 1998. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Twin Ponies Watershed Site 17a
The primary purpose of Twin Ponies Watershed Site 17a 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 West Pottawattamie County Swcd (local government). It impounds the Tr- Pony Creek near Council Bluffs.
The dam stands 54 feet tall and stretches 1,030 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 476 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1998, the structure is 28 years old.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 09/01/2009. That was over 16 years ago.
At 54 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Iowa |
| County | Pottawattamie |
| Nearest City | Council Bluffs |
| River/Stream | Tr- Pony Creek |
| Coordinates | 41.22870, -95.75550 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 54 ft |
| Dam Height | 54 ft |
| Dam Length | 1,030 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 476 acre-ft |
| Max Storage | 476 acre-ft |
| Normal Storage | 171 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | West Pottawattamie County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/01/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03232 |
| Federal ID | IA03232 |
| More Info | State Dam Safety Program |