Culbertson # 1 Reservoir Report

Last Updated: December 10, 2025

Culbertson # 1 is a private water resource located in McClain County, Oklahoma, specifically in the city of Newcastle.


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Summary

This earth-type dam was completed in 1955 and stands at a height of 23 feet, with a maximum storage capacity of 62 acre-feet. The dam's primary purpose is classified as "Other", with a spillway width of 1 foot and a controlled spillway type.

Despite being categorized as having a low hazard potential, Culbertson # 1 is noted to have a very high risk assessment rating. This suggests that there may be factors present that could potentially lead to significant risks if not properly managed. The dam has not been rated for its condition, and the last inspection on record dates back to July 2005, with an inspection frequency of 5 years.

For water resource and climate enthusiasts, Culbertson # 1 presents an intriguing case study in the management and assessment of dams. With its relatively low hazard potential but high risk assessment, there is a need for further evaluation and potential risk management measures to ensure the safety and sustainability of this crucial water resource in the region. The dam's historical significance, coupled with its design and operational details, make it a noteworthy site for ongoing monitoring and evaluation in the context of changing climate conditions and water resource management practices.

Year Completed

1955

Dam Length

350

Dam Height

23

River Or Stream

TR-POND CR

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

23

Nid Storage

62

Structural Height

23

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

23
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.