Oknoname 30156 Reservoir Report
Last Updated: December 7, 2025
Oknoname 30156, located in Beckham County, Oklahoma, is a privately owned earth dam designed by USDA NRCS with a dam height of 19.1 feet and a hydraulic height of 14.6 feet.
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Summary
Completed in 1998, the dam has a storage capacity of 56.2 acre-feet and serves as a critical water resource structure on Big Kiowa Creek. The dam's primary purpose is classified as "Other" and it is regulated by the Oklahoma Water Resources Board.
With a low hazard potential and a very high risk assessment rating, Oknoname 30156 has not been rated for its condition assessment as of the last inspection in November 2010. The dam features a controlled spillway, one valve outlet gate, and a surface area of 3.7 acres, providing essential flood control and water storage capabilities in the region. Despite being privately owned, the dam is subject to state permitting, inspection, and enforcement, ensuring its compliance with safety regulations and maintenance standards for the protection of downstream communities and the environment.
Year Completed |
1998 |
Dam Length |
440 |
Dam Height |
19.1 |
River Or Stream |
BIG KIOWA CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.7 |
Hydraulic Height |
14.6 |
Drainage Area |
420 |
Nid Storage |
56.2 |
Structural Height |
20.6 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Oknoname 30156