Little Black River Structure C Reservoir Report
Last Updated: December 5, 2025
Little Black River Structure C, also known as Cemetery Structure, is a flood risk reduction dam located in Cheboygan, Michigan.
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Summary
Owned by the local government and designed by USDA NRCS, this earth dam stands at a height of 21.7 feet and was completed in 1962. With a storage capacity of 420 acre-feet and a drainage area of 3.8 square miles, this dam plays a crucial role in managing water flow in the tributary of South Branch Little Black River.
The dam's spillway type is uncontrolled, with a width of 183 feet, and it has a high hazard potential. Despite this, the structure's condition assessment in 2017 deemed it satisfactory. The dam has no outlet gates, and its last inspection was conducted in August 2017. With a moderate risk assessment rating, Little Black River Structure C remains a significant asset for flood risk reduction in the area, safeguarding the surrounding community and environment from potential water-related disasters.
Year Completed |
1962 |
Dam Length |
283 |
Dam Height |
21.7 |
River Or Stream |
Trib-S Br Little Black River |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Drainage Area |
3.8 |
Nid Storage |
420 |
Structural Height |
21.7 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
22 |
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.
Little Black River Structure C
East Lincoln Avenue 101, Cheboygan