Hull James J Reservoir Report

Last Updated: December 5, 2025

Hull James J is a privately owned earth dam located in Okmulgee, Oklahoma, with a primary purpose classified as 'Other'.


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Summary

Constructed in 1940, this structure stands at a height of 25 feet and has a length of 900 feet, providing a storage capacity of 220 acre-feet. The dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, with a low hazard potential and a very high risk assessment rating.

Situated on the Snake Creek in the Tulsa District, Hull James J features a controlled spillway and a valve outlet gate. Although the dam is not federally owned or funded, it meets state permitting and inspection requirements. The condition assessment of the structure is currently listed as 'Not Rated', with a five-year inspection frequency and emergency preparedness status yet to be determined.

Overall, Hull James J serves as an essential component of water resource management in the area, providing necessary flood control and water storage capabilities. Its location in a high-risk area highlights the importance of regular monitoring and maintenance to ensure the safety and integrity of the dam for both the local community and the surrounding environment.

Year Completed

1940

Dam Length

900

Dam Height

25

River Or Stream

SNAKE CR

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

25

Nid Storage

220

Structural Height

25

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
Seasonal Comparison

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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.