Johnson Reservoir Report

Last Updated: December 5, 2025

Johnson is a private-owned earth dam located in Woodward, Oklahoma, along the West Creek river.


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Summary

Designed by the USDA NRCS, this dam stands at a height of 31 feet and has a storage capacity of 68 acre-feet. Despite being uncontrolled, the spillway width is 0, indicating a low hazard potential.

With no state jurisdiction or regulation, Johnson's condition is currently unrated. Although the dam has not been inspected recently, its moderate risk level suggests a need for ongoing monitoring and maintenance. With a risk management plan yet to be implemented, this structure serves as a reminder of the importance of proactive water resource management and climate adaptation strategies in the face of changing environmental conditions.

As part of the Tulsa District, Johnson plays a crucial role in water resource management in the region. While the dam's primary purpose and associated structures are unspecified, its presence underscores the need for comprehensive dam safety assessments and emergency preparedness measures. As climate change continues to impact water resources, it is essential to prioritize the resilience and sustainability of infrastructure like Johnson to ensure the safety and well-being of surrounding communities.

Dam Height

31

River Or Stream

WEST CREEK

Primary Dam Type

Earth

Hydraulic Height

31

Nid Storage

68

Hazard Potential

Low

Nid Height

31
       
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.
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