Macon River Dam Reservoir Report
Nearby: Milan Dam Ella Lee Lake Dam
Last Updated: January 12, 2026
The Macon River Dam, located in Monroe, Michigan, stands as a crucial structure for water supply in the region.
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Summary
Completed in 1958, this privately owned dam on the North Branch Macon Creek has a height of 15 feet and a storage capacity of 130 acre-feet. With a low hazard potential and fair condition assessment, the dam plays a vital role in managing water resources in the area.
Managed by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), the Macon River Dam is regulated, inspected, and enforced by state authorities. With a spillway width of 10 feet and a maximum discharge of 3200 cubic feet per second, the dam's uncontrolled spillway ensures efficient water flow and flood control. Despite being of a moderate risk level, the dam has been deemed safe for operations and continues to serve its primary purpose of water supply effectively.
For water resource and climate enthusiasts, the Macon River Dam offers a fascinating glimpse into the intersection of infrastructure, regulation, and environmental management. As a key feature in the local watershed, this dam exemplifies the careful balance between human intervention and nature's forces, showcasing the importance of sustainable water management practices in a changing climate.
Year Completed |
1958 |
Dam Length |
40 |
Dam Height |
15 |
River Or Stream |
North Branch Macon Creek |
Primary Dam Type |
Other |
Surface Area |
16 |
Hydraulic Height |
15.4 |
Drainage Area |
45 |
Nid Storage |
130 |
Structural Height |
15 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
River Raisin Near Monroe
|
542cfs |
Saline River Near Saline
|
46cfs |
River Raisin Near Adrian
|
253cfs |
Malletts Creek At Ann Arbor
|
7cfs |
Huron River At Ann Arbor
|
620cfs |
Ottawa River At University Of Toledo Toledo Oh
|
43cfs |
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.
Macon River Dam