Oknoname 037074 Reservoir Report

Last Updated: December 5, 2025

Oknoname 037074 is a privately owned Earth dam located in Creek County, Oklahoma, specifically in the city of Sapulpa.


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Summary

Completed in 1965, this dam serves a primary purpose of flood risk reduction along Skull Creek. Standing at a height of 25 feet and a length of 490 feet, it has a maximum storage capacity of 90 acre-feet and a normal storage level of 50 acre-feet. The dam has a controlled spillway with a width of 1 foot and an outlet gate system consisting of a single valve.

Despite being classified as having a low hazard potential, Oknoname 037074 is considered to have a very high risk due to its location and the surrounding area's vulnerability to flooding. The dam is under the regulatory oversight of the Oklahoma Water Resources Board (OWRB), which ensures that it is inspected, permitted, and enforced in accordance with state regulations. The last inspection of the dam took place in August 2011, with a recommended inspection frequency of every 5 years to assess its condition and maintenance needs.

Overall, Oknoname 037074 plays a crucial role in mitigating flood risks in the region and protecting the surrounding community from potential inundation. With its strategic location and state-regulated status, this dam stands as a vital infrastructure for water resource management and climate resilience in Creek County, Oklahoma. Its operational efficiency and maintenance are essential to ensuring the safety and security of the area against potential flood events.

Year Completed

1965

Dam Length

490

Dam Height

25

River Or Stream

SKULL CREEK

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

25

Nid Storage

90

Structural Height

25

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.