Genesee County Impoundment Reservoir Report

Last Updated: December 5, 2025

Located in Columbiaville, Michigan, the Genesee County Impoundment, also known as the Genesee County Wtp Dam, serves as a crucial water supply structure for the local community.


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Summary

Completed in 2016, this earth dam stands at a height of 30 feet and provides a storage capacity of 385 acre-feet. With a surface area of 19 acres and a drainage area to the Tributary to Henry Drain, this impoundment plays a vital role in ensuring water availability for residents in the area.

The dam, with a low hazard potential and satisfactory condition assessment, features an uncontrolled spillway type and has a moderate risk assessment rating. While it is not regulated by the state or federal agencies, its primary purpose is to provide water supply to the surrounding areas. With no associated structures or outlets, the Genesee County Impoundment is designed to meet the water demands of the community and maintain a stable water source for years to come.

Water resource and climate enthusiasts can appreciate the significance of the Genesee County Impoundment in ensuring water security in Lapeer, Michigan. As a local government-owned structure with a moderate risk level, this dam stands as a testament to the importance of sustainable water management practices in the region. With its completion in 2016 and a storage capacity of 385 acre-feet, the impoundment serves as a key component in the water infrastructure of the area, contributing to the overall resilience of the community in the face of changing climate conditions.

Year Completed

2016

Dam Length

1130

Dam Height

30

River Or Stream

Trib to Henry Drain

Primary Dam Type

Earth

Surface Area

19

Hydraulic Height

27.5

Nid Storage

385

Structural Height

30

Hazard Potential

Low

Nid Height

30
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
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