Hartman & Tyner Mitigation Pond 1 Reservoir Report

Last Updated: December 5, 2025

Hartman & Tyner Mitigation Pond 1, located in Oakland, Michigan, is a state-regulated earth dam completed in 1993 with a primary purpose that differs from typical water resource structures.


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Summary

With a dam height of 10 feet and a maximum storage capacity of 73 acre-feet, this pond serves as a key component in managing water resources in the region. The dam's low hazard potential and fair condition assessment make it a reliable asset for mitigating risks and ensuring water security in the area.

The pond, situated on a tributary to Thread Creek, covers a surface area of 10 acres and has a spillway width of 40 feet. With a maximum discharge capacity of 790 cubic feet per second, the dam is designed to handle significant water flow during peak periods. Despite its low hazard potential, the dam is subject to regular state inspections, ensuring its structural integrity and compliance with regulatory standards. Its moderate risk assessment underscores the importance of ongoing risk management measures to guarantee the safety and effectiveness of the water resource infrastructure.

In the event of an emergency, the condition assessment and risk management measures of Hartman & Tyner Mitigation Pond 1 will play a crucial role in safeguarding the surrounding community and ecosystem. With a designated inspection frequency of 5 years and a fair condition assessment as of October 2019, the dam's emergency action plan and risk mitigation strategies will be essential in addressing any potential threats. As water resource and climate enthusiasts, monitoring and supporting the maintenance of structures like Hartman & Tyner Mitigation Pond 1 are vital for ensuring sustainable water management practices and resilience in the face of changing environmental conditions.

Year Completed

1993

Dam Length

350

Dam Height

10

River Or Stream

Tributary to Thread Creek

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

6.4

Drainage Area

10

Nid Storage

73

Structural Height

10

Hazard Potential

Low

Nid Height

10
       
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.