Oknoname 111070 Reservoir Report
Nearby: Oknoname 111073 Oknoname 111068
Last Updated: December 6, 2025
Oknoname 111070 is a privately owned dam located in Okmulgee, Oklahoma, near the city of DEWAR.
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Summary
This earth dam stands at a height of 30 feet and has a length of 3400 feet, with a storage capacity of 250 acre-feet. It serves as a structure on the TR-COAL CREEK river system within the Tulsa District of Oklahoma. The dam is regulated by the Oklahoma Water Resources Board (OWRB) and is subject to state permitting, inspection, and enforcement.
Despite being rated as a low hazard potential structure, Oknoname 111070 is classified as having a very high risk level. The dam features a controlled spillway with a width of 1 foot and is equipped with a single valve outlet gate. Its condition assessment is currently not rated, with the last inspection conducted in November 2001. The dam's emergency action plan status and risk management measures are unclear, highlighting potential areas for further evaluation and improvement to ensure the safety and resilience of the structure in the face of changing climate conditions.
For water resource and climate enthusiasts, Oknoname 111070 presents an intriguing case study of a privately owned dam in Oklahoma facing high risk levels despite a low hazard potential rating. With its proximity to DEWAR and the TR-COAL CREEK river system, this earth dam serves as a key infrastructure within the state-regulated water management framework. Understanding the regulatory oversight, structural features, and risk assessment of Oknoname 111070 can provide valuable insights into the challenges and opportunities associated with managing water resources in a changing climate.
Dam Length |
3400 |
Dam Height |
30 |
River Or Stream |
TR-COAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
30 |
Nid Storage |
250 |
Structural Height |
30 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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 111070