Scs-Upper Elk Creek Site-12 Reservoir Report
Last Updated: December 19, 2025
SCS-Upper Elk Creek Site-12, located in Sentinel, Oklahoma, is a state-regulated earth dam constructed in 1967 by the USDA NRCS for flood risk reduction along the TR-Trail Creek.
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Summary
The dam stands at a height of 35 feet with a hydraulic height of 31 feet, providing a maximum storage capacity of 412 acre-feet. With a controlled spillway and a low hazard potential, this dam plays a crucial role in mitigating flood risks in the Washita County region.
Managed by the Oklahoma Water Resources Board (OWRB), SCS-Upper Elk Creek Site-12 features a single valve outlet gate for water release. Despite its age, the dam's condition remains unassessed as of the last inspection in 1980, with a very high risk assessment rating of 1. With a primary purpose of flood risk reduction and a normal storage capacity of 61 acre-feet, this dam serves as a vital infrastructure for water resource management and climate resilience in the region.
As climate change continues to impact water resources and flood patterns, the importance of structures like SCS-Upper Elk Creek Site-12 cannot be understated. With a history of successful flood risk reduction and a strategic location in the Tulsa District, this earth dam remains a critical asset for ensuring the safety and sustainability of water management practices in Washita County, Oklahoma.
Year Completed |
1967 |
Dam Length |
1000 |
Dam Height |
35 |
River Or Stream |
TR-TRAIL CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
31 |
Nid Storage |
412 |
Structural Height |
35 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Scs-Upper Elk Creek Site-12