Oknoname 30243 Reservoir Report
Last Updated: December 19, 2025
Oknoname 30243 is a privately owned structure located in Washita County, Oklahoma, specifically in the city of Sentinel.
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Summary
It is regulated by the Oklahoma Water Resources Board and is subject to state permitting, inspection, and enforcement. The dam, designed by USDA NRCS, stands at a height of 17 feet with a hydraulic height of 13.9 feet and a structural height of 19 feet. It has a storage capacity of 74.9 acre-feet and serves the primary purpose of "Other".
The dam is situated on the Trail Elk/Upper Elk Creek and is classified as a buttress and stone core type dam. It has a controlled spillway with a width of 1 foot. Despite being rated with a low hazard potential, the risk assessment for Oknoname 30243 indicates a very high risk level. The structure has not been rated for its condition assessment, and there are no emergency action plans in place as of the last update in June 2018. The dam has a drainage area of 0.73 square miles and a surface area of 3.9 acres, highlighting its importance in managing water resources in the region.
Dam Length |
300 |
Dam Height |
17 |
River Or Stream |
TRAIL ELK/ UPPER ELK CREEK |
Surface Area |
3.9 |
Hydraulic Height |
13.9 |
Drainage Area |
0.73 |
Nid Storage |
74.9 |
Structural Height |
19 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
19 |
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 30243