Rose Lake Flooding Dam Reservoir Report

Last Updated: December 5, 2025

Rose Lake Flooding Dam, also known as Orange Flooding Dam, is a state-owned structure located in Shiawassee County, Michigan.


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Summary

Built in 1960, this earth dam stands at a height of 8 feet and has a hydraulic height of 6.3 feet, serving as a vital component in managing the water resources of the area. The dam's primary purpose is classified as "Other," with a normal storage capacity of 72 acre-feet and a maximum storage of 160 acre-feet.

Situated on a tributary to Vermillion Creek, Rose Lake Flooding Dam plays a crucial role in regulating water flow and preventing flooding in Dewitt, Michigan. With a low hazard potential and fair condition assessment, the dam has been inspected regularly, with the last assessment conducted in October 2017. Despite its relatively low risk level, the dam is considered to have a high risk management need, highlighting the importance of ongoing monitoring and maintenance to ensure its continued effectiveness in water resource management and climate resilience efforts.

Managed by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), Rose Lake Flooding Dam stands as a testament to the state's commitment to safeguarding its water resources and infrastructure. With its strategic location and capacity to store water, the dam plays a vital role in protecting the surrounding communities and natural habitats from the potential impacts of extreme weather events and changing climate conditions. As water resource and climate enthusiasts, understanding the significance of structures like Rose Lake Flooding Dam is key to promoting sustainable water management practices and enhancing resilience in the face of climate challenges.

Year Completed

1960

Dam Length

810

Dam Height

8

River Or Stream

Tributary to Vermillion Creek

Primary Dam Type

Earth

Surface Area

68

Hydraulic Height

6.3

Drainage Area

0.48

Nid Storage

160

Structural Height

8

Hazard Potential

Low

Nid Height

8
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.