Priddy Lake Dam Reservoir Report
Nearby: Russell Dam Hoister Lake Dam
Last Updated: December 5, 2025
Priddy Lake Dam, located in Roscommon, Michigan, is a privately owned structure along the Sugar River with a primary purpose of recreation.
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Summary
Completed in 1968, this earth dam stands at a height of 16 feet and stretches 390 feet in length, providing a storage capacity of 80 acre-feet. The dam has a spillway width of 17 feet and a maximum discharge rate of 65 cubic feet per second, making it a significant structure in terms of hazard potential and risk assessment.
Despite its age, Priddy Lake Dam has been assessed as being in satisfactory condition as of September 2011, with inspections conducted every four years to ensure its safety and functionality. While the dam's hazard potential is considered significant, its risk assessment falls within the moderate range. The dam's emergency action plan (EAP) was last revised in 2007, although details on its compliance with guidelines and preparedness for potential inundation events are not specified. Overall, Priddy Lake Dam remains a key feature in the local water resource management infrastructure, serving as a recreational site while also posing important considerations for climate and water resource enthusiasts in the region.
Year Completed |
1968 |
Dam Length |
390 |
Dam Height |
16 |
River Or Stream |
Sugar River |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
16 |
Drainage Area |
1.4 |
Nid Storage |
80 |
Structural Height |
16 |
Hazard Potential |
Significant |
Nid Height |
16 |
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.
Priddy Lake Dam