Oknoname 085004 Reservoir Report
Nearby: Cheek Lake Dam Perry Lake Dam
Last Updated: January 12, 2026
Oknoname 085004, located in Cleveland County, Oklahoma, is a privately owned earth dam designed by USDA NRCS in 1978.
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Summary
This dam, situated on the South Branch Hickory Creek, serves a primary purpose of "Other" and stands at a height of 23 feet with a length of 865 feet. With a storage capacity of 137 acre-feet, it features a controlled spillway and a single valve outlet gate. Despite being categorized as having a low hazard potential, it is deemed to have a very high risk assessment level, indicating the need for careful monitoring and management.
Managed by the Oklahoma Water Resources Board, this dam is state-regulated and subject to inspection, enforcement, and permitting. With a designated inspection frequency of five years, its condition assessment is currently marked as "Not Rated," highlighting the importance of regular evaluations and maintenance. Although the dam has not undergone modifications in recent years, its risk assessment rating of "Very High (1)" underscores the need for proactive risk management measures to ensure the safety and functionality of the structure.
Overall, Oknoname 085004 serves as a crucial water resource infrastructure in the area, providing flood control and water storage benefits. As climate change continues to impact water resources, it is essential for water resource and climate enthusiasts to monitor and assess the condition of dams like Oknoname 085004 to ensure their resilience against evolving environmental challenges and to safeguard the surrounding communities and ecosystems.
Year Completed |
1978 |
Dam Length |
865 |
Dam Height |
23 |
River Or Stream |
SOUTH BRANCH HICKORY CR |
Primary Dam Type |
Earth |
Hydraulic Height |
23 |
Nid Storage |
137 |
Structural Height |
23 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
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.
Carnes Lake Dam