Fondulac Dam

Fondulac Dam is an earth dam located in Jefferson County, Missouri, built in 1954. It carries a High hazard potential classification.

About Fondulac Dam

The primary purpose of Fondulac Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Trustees-fon-du-lac Subd (private). It impounds the Tr- Saline Creek near Arnold.

The dam stands 28 feet tall, creates a reservoir covering 26 acres, has a maximum storage capacity of 389 acre-feet, and collects water from a drainage area of 346 square miles. Completed in 1954, the structure is well into its service life at over 50 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. The most recent inspection on record was 08/09/1978. That was 47 years ago — unusually long for a high-hazard dam, which typically requires more frequent inspections.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Missouri dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateMissouri
CountyJefferson
Nearest CityArnold
River/StreamTr- Saline Creek
Coordinates38.48917, -90.46889

Physical Characteristics

Dam TypeEarth
NID Height28 ft
Dam Height28 ft
Year Completed1954 (72 years old)

Storage & Hydraulics

NID Storage389 acre-ft
Max Storage389 acre-ft
Normal Storage296 acre-ft
Surface Area26 acres
Drainage Area346 sq mi

Ownership & Safety

PurposeRecreation
OwnerTRUSTEES-FON-DU-LAC SUBD
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentNot Rated
Last Inspection08/09/1978
Emergency Action PlanNot Required

Identifiers

NID IDMO10699
Federal IDMO10699
More InfoState Dam Safety Program

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