Oknoname 30126 Reservoir Report
Nearby: Henry D Glenn Ruth Gss No 1
Last Updated: December 6, 2025
Oknoname 30126 is a privately owned dam located in Tishomingo, Oklahoma, along the Big Sand Creek.
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Summary
Built in 2004 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction. Standing at a height of 27.4 feet with a hydraulic height of 20.4 feet, it has a storage capacity of 155.3 acre-feet and covers a surface area of 8.8 acres. The dam is constructed using stone as its core material and is founded on soil.
Despite being categorized as having a low hazard potential, Oknoname 30126 is considered to have a very high risk level, with a rating of 1 out of 5. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and undergoes regular inspections, enforcement, and permitting by state agencies. While its condition assessment is listed as "Not Rated," the dam has not required any major modifications since its completion. As an essential infrastructure for flood control in the area, Oknoname 30126 plays a crucial role in managing water resources and climate-related risks in Johnston County, Oklahoma.
Year Completed |
2004 |
Dam Length |
700 |
Dam Height |
24 |
River Or Stream |
BIG SAND CREEK |
Surface Area |
8.8 |
Hydraulic Height |
20.4 |
Drainage Area |
500 |
Nid Storage |
155.3 |
Structural Height |
27.4 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Blue River Near Connerville
|
54cfs |
Pennington Creek Near Reagan
|
7cfs |
Washita River Near Dickson
|
317cfs |
Clear Boggy Creek Near Caney
|
423cfs |
Blue River Near Blue
|
58cfs |
Rock Creek At Sulphur
|
8cfs |
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 30126