Oknoname 111037 Reservoir Report
Nearby: Lake Drive Acres Oknoname 111040
Last Updated: December 21, 2025
Oknoname 111037 is a privately owned dam located in Okmulgee, Oklahoma, specifically in the city of Henryetta.
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Summary
This earth dam was completed in 1940 and stands at a height of 45 feet, with a maximum storage capacity of 320 acre-feet. The dam, situated on TR-Coal Creek, serves a primary purpose of "Other" and is regulated by the Oklahoma Water Resources Board.
Despite being classified as low hazard potential, the risk assessment for Oknoname 111037 indicates a very high risk level, requiring attention to potential safety concerns. The dam features a controlled spillway with a width of 1 foot and an outlet gate consisting of a single valve. With a drainage area of 3 square miles, the dam provides important irrigation and flood control benefits for the surrounding area.
Although the condition assessment is listed as "Not Rated," regular inspections have been conducted, with the last inspection date recorded in August 2011. The dam is subject to inspection every 5 years to ensure its structural integrity and maintenance. With its strategic location and vital role in water resource management, Oknoname 111037 remains a significant asset in the region's infrastructure.
Year Completed |
1940 |
Dam Length |
3440 |
Dam Height |
45 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
45 |
Nid Storage |
320 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
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 111037