Oknoname 051059 Reservoir Report
Nearby: Oknoname 051058 Oknoname 137063
Last Updated: December 6, 2025
Oknoname 051059 is a privately owned earth dam located in Marlow, Oklahoma, along the TR-Little Beaver Creek.
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Summary
Built in 1950, this dam stands at a height of 30 feet and has a storage capacity of 180 acre-feet. With a maximum discharge rate of 7000 cubic feet per second, it features a controlled spillway and a single valve outlet gate.
Managed by the Oklahoma Water Resources Board (OWRB), Oknoname 051059 is categorized as having a low hazard potential but a very high risk assessment rating. Despite not being rated for condition assessment, this dam is subject to regular inspections every 5 years, with the last recorded inspection occurring in August 2010. While it is not under the jurisdiction of a federal agency, it is regulated and permitted by the state, highlighting its importance in water resource management in the area.
Water resource and climate enthusiasts will be intrigued by the structural details and operational aspects of Oknoname 051059. From its stone core and soil foundation to its stone core and controlled spillway, this dam plays a crucial role in flood control and water storage along the TR-Little Beaver Creek. With its location in Grady County, Oklahoma, this privately owned dam serves as a notable example of state-regulated infrastructure supporting water management efforts in the region.
Year Completed |
1950 |
Dam Length |
410 |
Dam Height |
30 |
River Or Stream |
TR-LITTLE BEAVER CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
30 |
Nid Storage |
180 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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 051059