Oknoname 087050 Reservoir Report
Nearby: Johnson Land & Cattle Co Lamar Cw
Last Updated: December 21, 2025
Oknoname 087050, located in McClain, Oklahoma, is a privately owned earth dam completed in 1955 with a primary purpose classified as 'Other'.
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Summary
The dam stands at a height of 20 feet and has a storage capacity of 67 acre-feet, serving as a part of the TR-North Fork Walnut Creek watershed. With a spillway type of 'Controlled' and a low hazard potential, the dam is equipped with a valve outlet gate and has a maximum discharge rate of 1540 cubic feet per second.
Managed by the Oklahoma Water Resources Board (OWRB), Oknoname 087050 has undergone regular inspections, with the last one conducted in July 2005. Despite being labeled as 'Not Rated' in terms of condition assessment, the dam is deemed to have a very high risk level, with a risk assessment score of 1. Although no emergency action plan (EAP) has been prepared for the structure, the risk management measures and guidelines for potential incidents are yet to be fully established. This data points towards the need for continued monitoring and maintenance to ensure the safety and efficiency of Oknoname 087050 in the face of climate variations and water resource demands.
Year Completed |
1955 |
Dam Length |
380 |
Dam Height |
20 |
River Or Stream |
TR-NORTH FORK WALNUT CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
20 |
Nid Storage |
67 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canadian River At Norman
|
208cfs |
North Criner Creek Near Criner
|
1cfs |
Walnut Creek At Purcell
|
29cfs |
Canadian River At Purcell
|
193cfs |
Washita River At Alex
|
236cfs |
Little River Blw Lk Thunderbird Nr Norman
|
2cfs |
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 087050