Ada

Ada is a multi-arch dam located in Kent County, Michigan, built in 1926. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Ada

The primary purpose of Ada is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Thornapple Association Inc (private). It impounds the Thornapple River near Ada.

The dam stands 32 feet tall and stretches 615 feet across, creates a reservoir covering 230 acres, has a maximum storage capacity of 2,300 acre-feet, and collects water from a drainage area of 824 square miles. Completed in 1926, the structure is well-established, with more than 75 years of service.

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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/11/2018.

At 32 feet, this dam is taller than 76% of dams nationwide.

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Low HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateMichigan
CountyKent
Nearest CityAda
River/StreamThornapple River
Coordinates42.90937, -85.49870

Physical Characteristics

Dam TypeMulti-Arch
NID Height32 ft
Dam Height32 ft
Dam Length615 ft
Year Completed1926 (100 years old)

Storage & Hydraulics

NID Storage2,300 acre-ft
Max Storage2,300 acre-ft
Normal Storage2,300 acre-ft
Surface Area230 acres
Drainage Area824 sq mi
Max Discharge13,800 cfs
Spillway TypeControlled

Ownership & Safety

PurposeHydroelectric
OwnerThornapple Association Inc
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection09/11/2018
Emergency Action PlanYes

Identifiers

NID IDMI00501
Federal IDMI00501
More InfoState Dam Safety Program

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