Oknoname 051057 Reservoir Report
Last Updated: December 6, 2025
Oknoname 051057 is a privately-owned earth dam located in Ninnekah, Oklahoma, within the Grady County.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1960, this dam on the Rock Creek stands at 20 feet high with a storage capacity of 260 acre-feet. With a controlled spillway and one valve outlet gate, the dam has a low hazard potential but is classified as having a very high risk due to its condition assessment not being rated. The dam is under the jurisdiction of the Oklahoma Water Resources Board (OWRB) and undergoes regular inspections, with the last one conducted in December 2010.
Despite its low hazard potential, Oknoname 051057 poses a significant risk due to its very high risk assessment classification. With a history of regular inspections and state regulation, the dam remains in operation for purposes unspecified in the data. The dam's location within the Tulsa District and its association with the Rock Creek highlight its importance in managing water resources in the region. Furthermore, the dam's emergency action plan status, as well as its risk management measures, remain undisclosed in the available data.
Water resource and climate enthusiasts interested in the management and regulation of dams in Oklahoma, particularly in the Grady County area, may find Oknoname 051057 a fascinating subject. With its unique characteristics as a privately-owned earth dam with a controlled spillway and a valve outlet gate, the dam's risk assessment and state regulation by the OWRB add layers of complexity to its operation and maintenance. Further research into the dam's condition assessment, emergency preparedness, and risk management measures could provide valuable insights into ensuring the safety and sustainability of water resources in the region.
Year Completed |
1960 |
Dam Length |
320 |
Dam Height |
20 |
River Or Stream |
ROCK CR |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
260 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
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 051057