Oknoname 137001 Reservoir Report
Nearby: Oknoname 137086 Oknoname 031013
Last Updated: December 6, 2025
Oknoname 137001, located in Stephens County, Oklahoma, is a privately owned earth dam completed in 1975 with a height of 20 feet and a hydraulic height of 16 feet.
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Summary
This dam, situated on TR Beaver Creek, serves a primary purpose other than flood control or water supply, with a maximum storage capacity of 66 acre-feet. The dam has a controlled spillway and is equipped with one valve outlet gate.
Despite being rated with a low hazard potential, Oknoname 137001 is identified as having a very high risk assessment. The dam has not been inspected since August 2011, with a recommended inspection frequency of every five years. The condition assessment is currently listed as not rated, and there is no emergency action plan (EAP) in place for this structure. The risk management measures for this dam are also unspecified.
The surrounding area of Pumpkin Center, where the dam is located, may be at risk in the event of a breach or failure of Oknoname 137001 due to its high risk assessment. With the hazard potential being low, but the risk assessment being very high, it is crucial for proper inspections and maintenance to be carried out to ensure the safety of the community and the integrity of the dam structure.
Year Completed |
1975 |
Dam Length |
303 |
Dam Height |
20 |
River Or Stream |
TR BEAVER CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
16 |
Nid Storage |
66 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
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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 137001