Thirty-fifth Street Dam

Thirty-fifth Street Dam is an earth dam located in Polk County, Iowa, built in 1992. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Thirty-fifth Street Dam

Thirty-fifth Street Dam is a dam in Polk, Iowa. The dam is owned by City Of West Des Moines (local government). It impounds the Tr-jordan Creek near West Des Moines.

The dam stands 23 feet tall and stretches 530 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 95 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 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 09/10/2024.

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Significant HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateIowa
CountyPolk
Nearest CityWest Des Moines
River/StreamTr-jordan Creek
Coordinates41.56570, -93.75670

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Height23 ft
Dam Length530 ft
Year Completed1992 (34 years old)

Storage & Hydraulics

NID Storage95 acre-ft
Max Storage95 acre-ft
Normal Storage25 acre-ft
Surface Area4 acres
Drainage Area0 sq mi
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerCity of West Des Moines
Owner TypeLocal Government
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection09/10/2024
Emergency Action PlanNot Required

Identifiers

NID IDIA02856
Federal IDIA02856
More InfoState Dam Safety Program

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