Standish Dam Reservoir Report
Nearby: Tecumseh Dam Globe Mill Dam
Last Updated: January 12, 2026
Standish Dam, located in Tecumseh, Michigan, along the River Raisin, was completed in 1914 primarily for recreation purposes.
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Summary
The dam stands at a height of 13.5 feet and has a maximum storage capacity of 179 acre-feet. It spans 330 feet in length and holds a normal storage of 55 acre-feet, serving as a popular spot for outdoor activities such as fishing and boating. However, despite its recreational appeal, the dam is categorized with a significant hazard potential and poor condition assessment, indicating a need for maintenance and risk management measures.
Managed by the local government, Standish Dam is regulated and permitted by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE). It undergoes regular inspections, with the last assessment conducted in November 2017. The dam features a controlled spillway with a width of 80 feet to manage excess water flow. With a very high risk rating and a congressman designated as Tim Walberg, the dam's condition and safety remain key concerns for water resource and climate enthusiasts. As efforts continue to ensure its structural integrity and overall safety, the future of Standish Dam in the face of changing environmental conditions remains a topic of interest and importance.
Year Completed |
1914 |
Dam Length |
330 |
Dam Height |
13.5 |
River Or Stream |
River Raisin |
Primary Dam Type |
Gravity |
Surface Area |
13 |
Hydraulic Height |
9.9 |
Drainage Area |
256 |
Nid Storage |
179 |
Structural Height |
13.5 |
Hazard Potential |
Significant |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
River Raisin Near Adrian
|
253cfs |
Saline River Near Saline
|
46cfs |
River Raisin Near Manchester
|
17cfs |
Mill Creek Near Dexter
|
93cfs |
River Raisin Near Monroe
|
542cfs |
Malletts Creek At Ann Arbor
|
7cfs |
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.
Standish Dam