Oknoname 111085 Reservoir Report
Nearby: Oknoname 111086 Boatman An
Last Updated: December 5, 2025
Oknoname 111085, a private-owned dam located in Okmulgee, Oklahoma, serves as a recreational spot along the Flat Rock Creek.
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Summary
Built in 1940, this earth dam stands at 28 feet high and spans 3310 feet in length, with a storage capacity of 300 acre-feet. With a controlled spillway and a single valve outlet gate, this dam has a low hazard potential and has not been rated for its current condition.
While the dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, it has not been modified in recent years. Despite its low hazard potential, it is noted as having a very high risk assessment rating, highlighting the importance of ongoing risk management measures. Although this dam may not be widely recognized by the US Army Corps of Engineers, its role in providing recreational opportunities underscores its significance to the local community and water resource enthusiasts alike.
In conclusion, Oknoname 111085 stands as a testament to the intersection of water resource management and recreational use. As a privately-owned dam in Oklahoma, it offers a glimpse into the diverse landscape of dam infrastructure in the state. With its historical significance and ongoing regulatory oversight, this dam serves as a valuable asset for both local residents and climate enthusiasts interested in the delicate balance between water management and recreational activities.
Year Completed |
1940 |
Dam Length |
3310 |
Dam Height |
28 |
River Or Stream |
FLAT ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Nid Storage |
300 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
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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 111085