Dexter Dam

Dexter Dam is a gravity dam located in Washtenaw County, Michigan, built in 1932. It carries a Undetermined hazard potential classification.

About Dexter Dam

The primary purpose of Dexter Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Washtenaw County Road Commission (local government). It impounds the Mill Creek near Dexter.

The dam stands 15 feet tall and stretches 90 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 350 acre-feet, and collects water from a drainage area of 128 square miles. Completed in 1932, the structure is well-established, with more than 75 years of service.

The most recent inspection on record was 11/01/1989. That was over 36 years ago.

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Undetermined HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateMichigan
CountyWashtenaw
Nearest CityDexter
River/StreamMill Creek
Coordinates42.33889, -83.89167

Physical Characteristics

Dam TypeGravity
NID Height15 ft
Dam Height15 ft
Dam Length90 ft
Year Completed1932 (94 years old)

Storage & Hydraulics

NID Storage350 acre-ft
Max Storage350 acre-ft
Normal Storage80 acre-ft
Surface Area22 acres
Drainage Area128 sq mi
Max Discharge4,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeRecreation
OwnerWashtenaw County Road Commission
Owner TypeLocal Government
Hazard ClassificationUndetermined
Condition AssessmentNot Rated
Last Inspection11/01/1989
Emergency Action PlanNot Required

Identifiers

NID IDMI00324
Federal IDMI00324
More InfoState Dam Safety Program

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