Twin Ponies Watershed Site 8
Key Takeaway
Twin Ponies Watershed Site 8 is classified as low hazard in Iowa. It was completed in 1990 and is 36 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 36 ft (taller than 74.2% in IA) |
| Dam Length | 870 ft |
| Dam Type | Earth |
| Max Storage | 35 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1990 (36 years old) |
| NID ID | IA02663 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
West Pottawattamie County SWCD
Local Government
Nearby Dams
Peters/Fischer Dam
Pottawattamie, IA
Low Hazard 37 ftTwin Ponies Watershed Site 17a
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Low Hazard 54 ftAnderson Dam
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Low Hazard 31 ftGoos/Brandt Dam
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Low Hazard 36 ftJohnson Dam
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Low Hazard 30 ftPony Creek Watershed Site 8a
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Low Hazard 62 ftLake Ohana Dam #1
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Significant Hazard 46 ftPony Creek Watershed Site 9
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Low Hazard 60 ftFrequently Asked Questions
What is the hazard classification of Twin Ponies Watershed Site 8?
Twin Ponies Watershed Site 8 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Twin Ponies Watershed Site 8?
Twin Ponies Watershed Site 8 is owned by West Pottawattamie County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twin Ponies Watershed Site 8 built?
Twin Ponies Watershed Site 8 was completed in 1990, making it 36 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Twin Ponies Watershed Site 8?
Twin Ponies Watershed Site 8 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twin Ponies Watershed Site 8?
Twin Ponies Watershed Site 8 has a dam height of 36 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Twin Ponies Watershed Site 8 last inspected?
Twin Ponies Watershed Site 8 was last inspected on October 21, 1993. Inspection dates indicate when a formal review occurred, not the results of that inspection.