Au Train Reservoir Report
Last Updated: December 5, 2025
Au Train, also known as Forest Lake Dam, is a hydroelectric structure located in Alger, Michigan, along the picturesque Au Train River.
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Summary
Completed in 1910, this gravity dam stands at a height of 31 feet and serves multiple purposes, including hydroelectric power generation and recreation. With a storage capacity of 12,319 acre-feet and a maximum discharge of 13,200 cubic feet per second, Au Train plays a crucial role in water resource management in the region.
Managed by the Federal Energy Regulatory Commission, Au Train Dam has a high hazard potential due to its structural characteristics and location. Despite its age, the dam's condition assessment is not available, posing a potential risk to the surrounding area in the event of a failure. Regular inspections are conducted to ensure its safety, with the last inspection taking place in September 2020. The dam also has an emergency action plan in place, meeting guidelines and preparedness for any unforeseen events.
In light of its historical significance and environmental impact, Au Train Dam stands as a testament to the intersection of water resource management and climate resilience. Its presence not only provides a source of renewable energy but also offers recreational opportunities for the local community. As efforts continue to assess and mitigate potential risks associated with the dam, its role in shaping the region's water infrastructure remains vital for sustainable development and adaptation to changing climatic conditions.
Year Completed |
1910 |
Dam Length |
1970 |
Dam Height |
31 |
River Or Stream |
Au Train River |
Surface Area |
1515 |
Hydraulic Height |
38 |
Drainage Area |
80 |
Nid Storage |
12319 |
Structural Height |
45 |
Hazard Potential |
High |
Nid Height |
45 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Forest Lake State Forest Campground
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Au Train Lake Campground
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Hovey Lake Campground
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Hovey Lake Campsites
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Bay Furnace Campground
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Bay Furnace
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Au Train
Storage Basin Road Au Train Township
West Branch From Source In Sec 26, T46N, R23 W To Junction With County Road 444