Rock Creek Reservoir Reservoir Report

Last Updated: December 5, 2025

Rock Creek Reservoir, located in Tulsa, Oklahoma, is a crucial water supply source managed by the local government.


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Summary

Built by the USDA NRCS in 1958, this reservoir stands at a height of 70 feet and has a storage capacity of 2300 acre-feet. The dam, primarily made of earth with a stone core and soil foundation, controls the flow of Rock Creek, ensuring water availability for the surrounding area.

Despite its low hazard potential, Rock Creek Reservoir has a very high risk assessment due to its age and lack of recent condition assessments. The dam features a controlled spillway and a single valve outlet gate, with a maximum discharge capacity of 24,780 cubic feet per second. While it is regularly inspected and maintained by the OWRB, the reservoir's risk management measures and emergency action plans need updating to meet current guidelines and ensure the safety of the surrounding community. Enthusiasts of water resources and climate will find Rock Creek Reservoir to be an interesting case study in water supply infrastructure and the importance of proactive risk management in maintaining sustainable water resources.

Year Completed

1958

Dam Length

250

Dam Height

70

River Or Stream

ROCK CREEK

Primary Dam Type

Earth

Hydraulic Height

70

Drainage Area

3.26

Nid Storage

2300

Structural Height

70

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

70
       
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.