Niles Ranch Dam Reservoir Report
Nearby: Junior Tillman No.1 Powers Eugene
Last Updated: December 10, 2025
Niles Ranch Dam, located in Union City, Oklahoma, is a privately owned earth dam with a primary purpose of recreation.
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Summary
Completed in 2009, this impressive structure stands at a height of 48 feet and has a hydraulic height of 26 feet. With a storage capacity of 476 acre-feet and a normal storage of 158 acre-feet, the dam serves as a vital resource for water supply and flood control in the area.
The dam's spillway is of the controlled type, ensuring efficient water release during times of excess flow. The inspection frequency is set at every three years, with the last assessment conducted in July 2020, revealing a satisfactory condition. Despite its significant hazard potential, the risk assessment for Niles Ranch Dam indicates a very high risk level, emphasizing the importance of ongoing monitoring and maintenance to ensure the safety of surrounding communities and ecosystems.
With its close proximity to the Canadian River tributary and a surface area of 11.51 acres, Niles Ranch Dam plays a crucial role in water resource management and climate resilience efforts in the region. As enthusiasts of water resources and climate adaptation, understanding the design, function, and risk profile of structures like Niles Ranch Dam is essential for promoting sustainable water management practices and enhancing community preparedness for potential hazards.
Year Completed |
2009 |
Dam Length |
337 |
Dam Height |
48 |
River Or Stream |
TRIB TO CANADIAN RIVER |
Primary Dam Type |
Earth |
Surface Area |
11.51 |
Hydraulic Height |
26 |
Drainage Area |
2.48 |
Nid Storage |
476 |
Structural Height |
48 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
48 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canadian River At Bridgeport
|
152cfs |
North Canadian River Near Calumet
|
161cfs |
Lake Creek Near Eakly
|
4cfs |
Willow Creek Near Albert
|
2cfs |
North Canadian River Near El Reno
|
109cfs |
Cobb Creek Near Eakly
|
16cfs |
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.
Niles Ranch Dam