Globe Mill Dam Reservoir Report
Nearby: Standish Dam Tecumseh Dam
Last Updated: January 11, 2026
Globe Mill Dam, located in Tecumseh, Michigan, on the River Raisin, stands as a significant structure with a primary purpose of recreation.
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Summary
Constructed in 1972, this gravity dam measures 22.3 feet in height and spans 526 feet in length, offering a storage capacity of 250 acre-feet. With a normal storage of 160 acre-feet and a drainage area of 256 square miles, the dam plays a crucial role in managing water resources in the region.
Managed by the local government and regulated by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), Globe Mill Dam has fair condition assessment as of November 2017. Despite its significant hazard potential, the dam's risk assessment remains at a very high level, emphasizing the importance of regular inspections and maintenance. With a controlled spillway type and a maximum discharge capacity of 1200 cubic feet per second, the dam serves as a vital asset for both water resource management and recreational activities in Lenawee County.
Surrounded by picturesque scenery and offering opportunities for outdoor enthusiasts, Globe Mill Dam is not only a structural marvel but also a focal point for water resource and climate enthusiasts. As efforts continue to ensure its safety and longevity, the dam remains a key feature in the regional landscape, providing both functional and recreational benefits for the community.
Year Completed |
1972 |
Dam Length |
526 |
Dam Height |
22.3 |
River Or Stream |
River Raisin |
Primary Dam Type |
Gravity |
Surface Area |
23 |
Hydraulic Height |
20.8 |
Drainage Area |
256 |
Nid Storage |
250 |
Structural Height |
22.3 |
Hazard Potential |
Significant |
Nid Height |
22 |
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.
Globe Mill Dam