Oknoname 059021 Reservoir Report
Nearby: Oknoname 059025 Oknoname 059036
Last Updated: December 18, 2025
Oknoname 059021, located in Harper County, Oklahoma, is a privately owned earth dam constructed in 1950 with a height of 24 feet and a length of 680 feet.
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Summary
This dam, situated on TR-Sleeping Bear Creek, serves a primary purpose other than flood control or water supply. With a storage capacity of 70 acre-feet and a controlled spillway, the dam poses a low hazard potential but is rated as having a very high risk due to unspecified factors.
Although the dam is state-regulated and complies with inspection, permitting, and enforcement requirements, its condition assessment is currently listed as "Not Rated." The last inspection was conducted in August 2011, with a scheduled inspection frequency of every 5 years. Despite the low hazard potential, the high-risk rating suggests potential concerns that may require further risk management measures in the future to ensure the safety and integrity of the structure. It is located in the city of Freedom, within the jurisdiction of the Oklahoma Water Resources Board (OWRB) and the Tulsa District of the US Army Corps of Engineers.
Year Completed |
1950 |
Dam Length |
680 |
Dam Height |
24 |
River Or Stream |
TR-SLEEPING BEAR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Nid Storage |
70 |
Structural Height |
24 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River At Woodward
|
69cfs |
Cimarron River Near Buffalo
|
75cfs |
Cimarron R Near Buttermilk
|
47cfs |
Cimarron River Near Waynoka
|
129cfs |
Bluff Creek Nr Buttermilk
|
43cfs |
North Canadian River Near Seiling
|
104cfs |
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 059021