Heil Dam Reservoir Report
Nearby: Smallwood Dam Secord Dam
Last Updated: December 25, 2025
Heil Dam, also known as Heil Road Dam, is a private-owned structure located in Edenville, Michigan.
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Summary
Built in 1970, this earth-type dam stands at a height of 23 feet and spans 120 feet in length across Black Creek. Its primary purpose is for recreation, offering a surface area of 10 acres and a maximum storage capacity of 140 acre-feet.
Despite its low hazard potential, Heil Dam was assessed as unsatisfactory in its condition back in 2016. The dam is under the regulation of the Michigan Department of Environment, Great Lakes, and Energy, with state-permitted inspections and enforcement in place. The spillway is uncontrolled, with a width of 4 feet, and the dam has a moderate risk rating of 3, prompting the need for risk management measures.
While Heil Dam provides recreational opportunities in the area, its condition assessment and risk level indicate the importance of ongoing monitoring and maintenance to ensure the safety and stability of the structure. As a focal point for water resource and climate enthusiasts, the dam serves as a reminder of the vital role of proper management and regulation in safeguarding our water infrastructure.
Year Completed |
1970 |
Dam Length |
120 |
Dam Height |
23 |
River Or Stream |
Black Creek |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
23 |
Drainage Area |
11.59 |
Nid Storage |
140 |
Structural Height |
23 |
Hazard Potential |
Low |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Heil Dam