Haskett Reservoir Report
Nearby: Janie Cornell F Schoonmaker
Last Updated: December 5, 2025
Haskett is a private dam located in Custer County, Oklahoma, near the city of Arapaho.
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Summary
Built in 1969, this Earth-type dam stands at a height of 28 feet and spans 400 feet in length, with a maximum storage capacity of 50 acre-feet. The primary purpose of the dam is classified as "Other," with a low hazard potential and a very high risk assessment rating.
Managed by the Oklahoma Water Resources Board (OWRB), Haskett is regulated, permitted, inspected, and enforced by the state agency. The dam is situated on the TR-Beaver Creek and falls under the jurisdiction of the Tulsa District of the US Army Corps of Engineers. Despite not being federally owned or funded, Haskett is equipped with a controlled spillway and a single valve outlet gate for water release.
The condition of Haskett has not been rated, and the last inspection took place in June 2011. With an inspection frequency of 5 years, the dam is considered to meet state guidelines for emergency action plans and inundation maps. However, the risk assessment remains at a very high level, highlighting the importance of ongoing monitoring and risk management measures for this essential water resource in Oklahoma.
Year Completed |
1969 |
Dam Length |
400 |
Dam Height |
28 |
River Or Stream |
TR-BEAVER CR |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Nid Storage |
50 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
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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.
Haskett