Oknoname 111046 Reservoir Report
Nearby: Oknoname 111039 Oknoname 111049
Last Updated: December 6, 2025
Oknoname 111046 is a private-owned dam located in Okmulgee, Oklahoma, specifically in the city of Henryetta.
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Summary
This earth-type dam stands at a height of 25 feet and stretches for 3340 feet along the TR-Coal Creek river. Completed in 1940, the dam has a storage capacity of 50 acre-feet, with a normal storage level of 25 acre-feet. It has a controlled spillway and a low hazard potential, with a very high risk assessment rating.
Despite being a private-owned structure, Oknoname 111046 is regulated by the Oklahoma Water Resources Board (OWRB) and is subject to state inspection, permitting, and enforcement. The dam features a single valve outlet gate and has not been rated for its current condition. The last inspection was conducted in August 2011, with an inspection frequency of 5 years. Although the dam has not been modified in recent years, it is essential to have emergency action plans in place due to its high-risk designation.
Located in the Tulsa District and under the jurisdiction of the state of Oklahoma, Oknoname 111046 plays a crucial role in managing water resources and mitigating flood risks in the region. The dam's strategic position along the TR-Coal Creek river underscores its importance in ensuring water security for nearby communities. As climate change continues to impact water availability and extreme weather events, monitoring and maintaining the integrity of dams like Oknoname 111046 are essential for sustainable water resource management and climate resilience efforts.
Year Completed |
1940 |
Dam Length |
3340 |
Dam Height |
25 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Nid Storage |
50 |
Structural Height |
25 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River Near Wetumka
|
212cfs |
Deep Fork Near Beggs
|
142cfs |
Canadian River At Calvin
|
361cfs |
Arkansas River Near Haskell
|
6440cfs |
Little River Near Sasakwa
|
14cfs |
Little Haikey Creek At 101st St South At Tulsa
|
0cfs |
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 111046