Oliver Ranch Dam Reservoir Report
Nearby: Oknoname 051013 Oknoname 087010
Last Updated: December 23, 2025
Oliver Ranch Dam, located in Blanchard, Oklahoma, serves as a crucial structure for debris control along an unnamed tributary to North Fork Walnut Creek.
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Summary
This private dam, with a height of 50 feet and a hydraulic height of 48 feet, plays a significant role in managing water flow and protecting the surrounding area from potential hazards. With a storage capacity of 1,500 acre-feet and a surface area of 55 acres, the dam helps regulate water levels and ensure the safety of the community.
Managed by the Oklahoma Water Resources Board (OWRB), Oliver Ranch Dam is state-regulated and undergoes regular inspections to maintain its structural integrity. Despite being classified as a low-hazard dam, it plays a vital role in mitigating risks and safeguarding the local environment. With a drainage area of 1.36 square miles and a maximum discharge capacity of 204 cubic feet per second, the dam provides essential protection against potential flooding events.
While the dam's condition assessment is currently marked as "Not Rated," its role in debris control and water management highlights its importance in the region. As a key structure in the area, Oliver Ranch Dam continues to serve as a critical resource for both water resource management and climate resilience efforts.
Dam Length |
1015 |
Dam Height |
50 |
River Or Stream |
Unnamed trib. to North Fork Walnut Creek |
Surface Area |
55 |
Hydraulic Height |
48 |
Drainage Area |
1.36 |
Nid Storage |
1500 |
Structural Height |
77 |
Hazard Potential |
Low |
Nid Height |
77 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canadian River At Norman
|
195cfs |
North Criner Creek Near Criner
|
1cfs |
Washita River At Alex
|
239cfs |
Little Washita River East Of Ninnekah
|
18cfs |
Walnut Creek At Purcell
|
28cfs |
Canadian River At Purcell
|
190cfs |
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.
Oliver Ranch Dam