Pool One B Dam Reservoir Report

Last Updated: December 5, 2025

Located in Saginaw, Michigan, the Pool One B Dam is a crucial structure regulating the flow of water from Ferguson Bayou.


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Summary

Built in 1958, this Federal-owned dam stands at a height of 13 feet and stretches 9900 feet in length. With a storage capacity of 350 acre-feet and a spillway width of 200 feet, the dam plays a vital role in flood control and water management in the region.

Managed by the Michigan DEGLE, the Pool One B Dam is rated as having a low hazard potential and a moderate risk assessment level. Despite not being inspected since 1981, the dam remains in good condition and meets regulatory guidelines. The dam's primary purpose is listed as "Other," indicating its multifaceted role in water resource management in the area.

For water resource and climate enthusiasts, the Pool One B Dam presents an intriguing case study in dam infrastructure and management. From its construction history to its current risk assessment, this dam serves as a reminder of the importance of maintaining and monitoring critical water infrastructure to ensure the safety and sustainability of our communities.

Year Completed

1958

Dam Length

9900

Dam Height

13

River Or Stream

Ferguson Bayou

Primary Dam Type

Earth

Surface Area

67

Hydraulic Height

13

Nid Storage

350

Structural Height

13

Hazard Potential

Low

Nid Height

13
       
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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.