Scs-Stillwater Creek Site-40 Reservoir Report

Last Updated: December 9, 2025

SCS-Stillwater Creek Site-40, also known as Mcmurtry Lake, is a state-owned structure located in Noble, Oklahoma, specifically in Stillwater.


°F

°F

mph

Wind

%

Humidity

Summary

This earth dam was completed in 1971 and serves primarily as a water supply source for the area. Standing at 64 feet tall with a length of 3039 feet, the dam has a storage capacity of 24,726 acre-feet and a surface area of 1155 acres, drawing water from a drainage area of 25 square miles.

Managed by the USDA NRCS, this dam on the North Stillwater Creek is regulated by the OWRB and meets state permitting, inspection, and enforcement requirements. The spillway is designed to be controlled with a width of 4 feet, and the dam poses a high hazard potential due to its condition assessment being fair. While the risk assessment is very high, emergency action plans and management measures are not explicitly detailed in the available data, indicating potential areas for further development and improvement in risk mitigation strategies.

Despite its age, SCS-Stillwater Creek Site-40 continues to play a crucial role in water resource management for the region, emphasizing the importance of maintaining and monitoring its structural integrity and risk management protocols. As climate change poses increasing challenges to water availability and quality, the significance of such water supply infrastructure becomes even more pronounced, underlining the need for proactive measures to ensure the resilience and sustainability of our water resources in the face of a changing climate.

Year Completed

1971

Dam Length

3039

Dam Height

64

River Or Stream

NORTH STILLWATER CREEK

Primary Dam Type

Earth

Surface Area

1155

Hydraulic Height

64

Drainage Area

25

Nid Storage

24726

Structural Height

64

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

64
       
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.