Oknoname 30235 Reservoir Report
Nearby: Richardson Dave No.1 Buggy 2
Last Updated: December 7, 2025
Oknoname 30235 is a privately owned water resource located in Grady, Oklahoma, specifically in the city of COGAR.
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Summary
Managed by the USDA NRCS, this structure is regulated by the Oklahoma Water Resources Board and is used primarily for recreational purposes. The dam, with a height of 35.6 feet and a hydraulic height of 29.6 feet, holds a maximum storage capacity of 18.51 acre-feet and covers a surface area of 1.5 acres. Situated on the LOWER CANADIAN-WALNUT CREEK, Oknoname 30235 boasts a controlled spillway with a width of 1 foot and a maximum discharge rate of 36.8 cubic feet per second.
Despite being rated as having a low hazard potential and currently not assessed for its condition, Oknoname 30235 is considered to have a very high risk due to its location and characteristics. With an inspection frequency of 5 years, this structure has yet to undergo a formal condition assessment, emergency action plan preparation, or risk assessment. While it meets state regulatory requirements and is jurisdictionally approved, further evaluation and management measures may need to be implemented to ensure the safety and longevity of Oknoname 30235 as a key recreational water resource in the area.
Dam Length |
156 |
Dam Height |
35.6 |
River Or Stream |
LOWER CANADIAN-WALNUT CREEK |
Surface Area |
1.5 |
Hydraulic Height |
29.6 |
Drainage Area |
0.2 |
Nid Storage |
18.51 |
Structural Height |
35.2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
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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 30235