Scs-Stillwater Creek Site Site-49a Reservoir Report

Last Updated: December 8, 2025

SCS-Stillwater Creek Site Site-49a in Payne County, Oklahoma, is a state-regulated earth dam managed by the USDA NRCS, with a primary purpose of flood risk reduction.


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Summary

Completed in 1998, this dam stands at a height of 32 feet and has a capacity of 604 acre-feet for storing water. With a controlled spillway and a slide gate outlet, the dam serves as a crucial structure for managing water flow in the tributary of Stillwater Creek.

Despite its fair condition assessment and high hazard potential, SCS-Stillwater Creek Site Site-49a has not been modified in recent years. The dam's risk assessment classifies it as very high, emphasizing the importance of regular inspections and maintenance to ensure its structural integrity. The dam's location in the Tulsa District and its association with the Natural Resources Conservation Service highlight its significance in water resource management and climate resilience efforts in the region. Climate enthusiasts and water resource professionals can appreciate the role of SCS-Stillwater Creek Site Site-49a in mitigating flood risks and protecting the surrounding community.

Year Completed

1998

Dam Length

1250

Dam Height

32

River Or Stream

TRIBUTARY OF STILLWATER CREEK

Primary Dam Type

Earth

Surface Area

55

Hydraulic Height

3

Nid Storage

604

Structural Height

32

Outlet Gates

Slide (sluice gate)

Hazard Potential

High

Foundations

Soil

Nid Height

32
       
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.