Twin Ponies Watershed Site 8

Twin Ponies Watershed Site 8 is an earth dam located in Pottawattamie County, Iowa, built in 1990. It carries a Low hazard potential classification.

About Twin Ponies Watershed Site 8

The primary purpose of Twin Ponies Watershed Site 8 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 Missouri River.

The dam stands 36 feet tall and stretches 870 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1990, the structure is 36 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. The most recent inspection on record was 10/21/1993. That was over 32 years ago.

At 36 feet, this dam is taller than 83% of dams nationwide.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyPottawattamie
Nearest CityMissouri River
River/StreamTr- Pony Creek
Coordinates41.19350, -95.76250

Physical Characteristics

Dam TypeEarth
NID Height36 ft
Dam Height36 ft
Dam Length870 ft
Year Completed1990 (36 years old)

Storage & Hydraulics

NID Storage35 acre-ft
Max Storage35 acre-ft
Normal Storage12 acre-ft
Surface Area1 acres
Drainage Area1 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeFire Protection, Stock, Or Small Fish Pond
OwnerWest Pottawattamie County SWCD
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection10/21/1993
Emergency Action PlanNot Required

Identifiers

NID IDIA02663
Federal IDIA02663
More InfoState Dam Safety Program

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