Wildhorse Creek Forest Dam

Wildhorse Creek Forest Dam is an earth dam located in St. Louis County, Missouri, built in 1989. It carries a Significant hazard potential classification and has a satisfactory condition assessment.

About Wildhorse Creek Forest Dam

The primary purpose of Wildhorse Creek Forest Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is private-owned. It impounds the Tributary To Wildhorse Creek near Chesterfield.

The dam stands 60 feet tall and stretches 360 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 28 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1989, the structure is 37 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 10/01/2020.

At 60 feet, this dam is taller than 95% of all dams in the United States.

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Significant HazardSatisfactory ConditionEmergency Action Plan: No

Location

StateMissouri
CountySt. Louis
Nearest CityChesterfield
River/StreamTributary To Wildhorse Creek
Coordinates38.64671, -90.66564

Physical Characteristics

Dam TypeEarth
NID Height60 ft
Dam Height60 ft
Dam Length360 ft
Year Completed1989 (37 years old)

Storage & Hydraulics

NID Storage28 acre-ft
Max Storage28 acre-ft
Normal Storage28 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge346 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeFlood Risk Reduction
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentSatisfactory
Last Inspection10/01/2020
Emergency Action PlanNo

Identifiers

NID IDMO12230
Federal IDMO12230
More InfoState Dam Safety Program

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