Webber Ranch Dam Reservoir Report

Last Updated: December 5, 2025

Webber Ranch Dam, located in Au Gres, Michigan, is a private dam primarily used for recreation purposes.


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Summary

Completed in 1930, this gravity dam stands at a height of 15 feet and has a length of 132 feet. It impounds Hope Creek, providing a surface area of 3 acres and a storage capacity of 90 acre-feet. With a low hazard potential and a moderate risk assessment, the dam is considered to be in fair condition, although it has not been recently assessed.

Despite being privately owned, Webber Ranch Dam is not regulated or inspected by the state. It has an uncontrolled spillway with a width of 12 feet and a maximum discharge of 150 cubic feet per second. The dam poses a low risk of failure, but emergency action plans have not been prepared or updated. Overall, this dam serves as a small-scale water resource for the local community, offering opportunities for fire protection, stock, and recreation while maintaining a moderate level of risk management.

Year Completed

1930

Dam Length

132

Dam Height

15

River Or Stream

Hope Creek

Primary Dam Type

Gravity

Surface Area

3

Hydraulic Height

15

Nid Storage

90

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
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.