Oknoname 30127 Reservoir Report
Nearby: Noel Kaiser Dam Lyle Combs
Last Updated: December 5, 2025
Oknoname 30127 is a private water supply dam located in Custer, Oklahoma, along Rough Creek.
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Summary
The dam was designed by USDA NRCS and completed in 2004, with a primary purpose of water supply. It has a dam height of 30 feet and a hydraulic height of 25.9 feet, providing a storage capacity of 41.43 acre-feet and a surface area of 3.74 acres. The dam is regulated by the OWRB and undergoes regular state inspections and enforcement to ensure its safety and compliance with regulations.
Despite being classified as having a low hazard potential, Oknoname 30127 is considered to have a very high risk assessment rating of 1, indicating potential risks that need to be managed. The dam has a controlled spillway with a width of 1 foot and an outlet gate consisting of a single valve. While the condition assessment of the dam is currently listed as "Not Rated," it is inspected every 5 years to assess its structural integrity and safety. The surrounding area is at risk of inundation in the event of a breach, highlighting the importance of effective risk management measures and emergency preparedness for this critical water resource infrastructure.
Year Completed |
2004 |
Dam Height |
30 |
River Or Stream |
ROUGH CREEK |
Primary Dam Type |
Earth |
Surface Area |
3.74 |
Hydraulic Height |
25.9 |
Drainage Area |
176 |
Nid Storage |
41.43 |
Structural Height |
30.4 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
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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 30127