Nicolson W. Reservoir Report
Nearby: Wright Pond Callison
Last Updated: December 5, 2025
Nicolson W.
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Summary
is a private earth dam located in Fairview, Oklahoma, along the TR-Griever Creek. Completed in 1955, this dam stands at a height of 20 feet and has a length of 870 feet, providing a storage capacity of 66 acre-feet. With a controlled spillway and valve outlet gates, this structure is regulated by the Oklahoma Water Resources Board and undergoes regular inspections to ensure its safety and functionality.
Despite being rated as having a low hazard potential, Nicolson W. is classified as having a very high risk due to its critical importance in water resource management. The dam serves a primary purpose of 'Other', with its stone core and soil foundation contributing to its structural integrity. In the event of an emergency, the dam's Emergency Action Plan (EAP) status is currently unreported, but measures are likely in place to mitigate any potential risks and ensure the safety of downstream communities.
With its location in Major County, Oklahoma, Nicolson W. plays a crucial role in water storage and management along the TR-Griever Creek. As climate change continues to impact water resources, dams like Nicolson W. are essential for maintaining water supply and mitigating the effects of extreme weather events. As such, ongoing monitoring and maintenance of this dam are vital to safeguarding both the environment and local communities against potential risks.
Year Completed |
1955 |
Dam Length |
870 |
Dam Height |
20 |
River Or Stream |
TR-GRIEVER CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
20 |
Nid Storage |
66 |
Structural Height |
20 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
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.
Nicolson W.