Wigwam Bay Wildlife Area Dike Reservoir Report
Nearby: Senske Dam Dolbee Dam
Last Updated: December 5, 2025
Wigwam Bay Wildlife Area Dike, also known as Harsen Smith Marsh Dike, is a state-owned earth dam in Arenac, Michigan, specifically located in Wigwam Bay.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1940, this recreational structure spans 26,000 feet along the Old Rifle River Channel, with a height of 9 feet and a hydraulic height of 5.9 feet. The dam serves multiple purposes, including recreation, and has a storage capacity of 2,700 acre-feet.
Despite being classified as having a low hazard potential and satisfactory condition, the dam is subject to regular inspections every five years to ensure its safety and functionality. The last inspection took place in April 2015, with the dam meeting established guidelines and demonstrating moderate risk levels. While the dam does not have controlled spillways or outlet gates, it plays a vital role in managing the water levels and providing habitat for wildlife in the area.
Water resource and climate enthusiasts will appreciate the unique features and ecological importance of Wigwam Bay Wildlife Area Dike, as it contributes to the conservation of the Old Rifle River Channel and supports recreational activities in the region. With its historical significance and ongoing maintenance efforts, this earth dam stands as a testament to Michigan's commitment to preserving its natural resources while balancing the needs of the community and the environment.
Year Completed |
1940 |
Dam Length |
26000 |
Dam Height |
9 |
River Or Stream |
Old Rifle River Channel |
Primary Dam Type |
Earth |
Surface Area |
750 |
Hydraulic Height |
5.9 |
Drainage Area |
1.2 |
Nid Storage |
2700 |
Structural Height |
9 |
Hazard Potential |
Low |
Nid Height |
9 |
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.
Wigwam Bay Wildlife Area Dike