Big Bradford Lake Level Control Structure Reservoir Report

Last Updated: December 5, 2025

The Big Bradford Lake Level Control Structure, located in Crawford County, Michigan, is a privately owned earth dam completed in 1979 for recreational purposes.


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Summary

The dam stands at a height of 6.6 feet with a hydraulic height of 5.6 feet, providing a storage capacity of 644 acre-feet and a maximum discharge rate of 25 cubic feet per second. The controlled spillway, measuring 6 feet wide, helps regulate the lake's water levels, with a hazard potential rated as low and a risk assessment indicating a very high risk level.

This structure, situated on Bradford Creek, serves as a vital component for managing water resources in the area, with the primary purpose of supporting recreational activities. Despite not being regulated by the state, the dam undergoes inspections every 5 years, with the last assessment conducted in December 2019, and its condition currently rated as not assessed. The risk management measures and emergency action plan status for the dam are not specified, highlighting the need for continued monitoring and maintenance to ensure the safety and functionality of this important water control infrastructure.

The Big Bradford Lake Level Control Structure, overseen by private owners, plays a crucial role in maintaining the surface area of 244 acres and normal storage capacity of 390 acre-feet for recreational use. With a risk assessment ranking it at a very high level, it underscores the importance of proactively addressing any potential hazards or risks associated with the dam to safeguard the surrounding community and environment. The structure's location in Frederick, Michigan, emphasizes the need for ongoing vigilance and adherence to safety guidelines to prevent any unforeseen incidents and ensure the sustainable management of water resources in the region.

Year Completed

1979

Dam Length

125

Dam Height

6.6

River Or Stream

Bradford Creek

Primary Dam Type

Earth

Surface Area

244

Hydraulic Height

5.6

Nid Storage

644

Structural Height

6.6

Hazard Potential

Low

Nid Height

7
       
Seasonal Comparison

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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.