Scs-Four Mile Creek Site-1 Reservoir Report
Nearby: Oknoname 017002 Matthies William T
Last Updated: December 24, 2025
SCS-Four Mile Creek Site-1, also known as El Reno Lake, is a state-owned dam located in Canadian County, Oklahoma.
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Summary
Designed by the USDA NRCS, this earth dam stands at a height of 40 feet and stretches 2,223 feet in length. Completed in 1966, its primary purpose is flood risk reduction for the Four Mile Creek watershed, with a storage capacity of 2,865 acre-feet and a drainage area of 6.71 square miles.
Managed by the Oklahoma Water Resources Board, SCS-Four Mile Creek Site-1 is regulated, permitted, inspected, and enforced by the state regulatory agency. With a controlled spillway and a hazard potential rated as high, this dam poses a very high risk, according to the latest risk assessment conducted. Despite being in fair condition as of the last inspection in 2011, emergency action plans and risk management measures are not currently in place, highlighting the importance of ongoing monitoring and maintenance to ensure the safety and integrity of this vital water resource infrastructure in the region.
Situated within the jurisdiction of the Tulsa District of the US Army Corps of Engineers, SCS-Four Mile Creek Site-1 plays a crucial role in protecting the surrounding community from potential flooding events. With its strategic location along Four Mile Creek and its significant storage capacity, this dam serves as a key component in the overall flood risk reduction efforts in the area. As water resource and climate enthusiasts, it is essential to recognize the importance of maintaining and monitoring such critical infrastructure to safeguard against potential hazards and ensure the continued sustainability of our water resources in the face of changing environmental conditions.
Year Completed |
1966 |
Dam Length |
2223 |
Dam Height |
40 |
River Or Stream |
FOUR MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
170 |
Hydraulic Height |
40 |
Drainage Area |
6.71 |
Nid Storage |
2865 |
Structural Height |
40 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
40 |
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-Four Mile Creek Site-1