Oknoname 30148 Reservoir Report

Last Updated: December 16, 2025

Oknoname 30148 is a privately owned dam located in Hennessey, Oklahoma, specifically in Kingfisher County.


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Summary

This dam, completed in 2002 by USDA NRCS designers, serves as a crucial water resource structure on the UNNAMED TRIB LYON CREEK, with a primary purpose designated as "Other." The dam stands at a height of 16.5 feet and has a storage capacity of 79.5 acre-feet, providing essential water storage for the surrounding area.

The dam's low hazard potential and very high risk assessment rating highlight the importance of its maintenance and regulation by the Oklahoma Water Resources Board (OWRB). With state jurisdiction and permitting in place, the dam undergoes regular inspections and enforcement to ensure its structural integrity and safety. The controlled spillway design and stone core construction further emphasize the attention to detail in its engineering, supporting its vital role in water resource management in the region.

Despite its remote location, Oknoname 30148 plays a significant role in water storage and management for the surrounding area. With a drainage area of 1,315 acres and a maximum discharge capacity of 273 cubic feet per second, this dam serves as a key asset for water supply and flood control. Its presence underscores the importance of proper regulation and maintenance of water resource infrastructure in mitigating risks and ensuring the sustainability of our climate-sensitive water systems.

Year Completed

2002

Dam Length

490

Dam Height

16.5

River Or Stream

UNNAMED TRIB LYON CREEK

Surface Area

7.59

Hydraulic Height

16.5

Drainage Area

1315

Nid Storage

79.5

Structural Height

25.2

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.