Lloyd Vincent Reservoir Report
Nearby: Stobough No.1 Detrixhe
Last Updated: December 7, 2025
Lloyd Vincent, also known as Vincent Lake, is a state-owned recreational reservoir located in Ellis, Oklahoma.
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Summary
Managed by the Oklahoma Water Resources Board (OWRB), this earth dam stands at a height of 50 feet, with a hydraulic height of 40 feet and a length of 1600 feet. Completed in 1961, the dam has a storage capacity of 9000 acre-feet and covers a surface area of 160 acres.
With a controlled spillway and a low hazard potential, Lloyd Vincent reservoir poses a very high risk due to its high discharge capacity of 21590 cubic feet per second. Despite being state-regulated and regularly inspected, the dam's condition is currently not rated, highlighting the need for ongoing monitoring and maintenance. The reservoir's primary purpose is recreation, making it a popular destination for water resource and climate enthusiasts seeking outdoor activities in the Roll City area.
For those interested in water resource management and climate resilience, Lloyd Vincent presents an intriguing case study in dam infrastructure in Oklahoma. With its unique design features and historical significance, this state-owned reservoir offers valuable insights into the challenges and opportunities associated with maintaining and regulating water resources in the region. As efforts continue to ensure the safety and sustainability of Lloyd Vincent, it remains a vital piece of Oklahoma's water infrastructure landscape.
Year Completed |
1961 |
Dam Length |
1600 |
Dam Height |
50 |
River Or Stream |
COON CR |
Primary Dam Type |
Earth |
Surface Area |
160 |
Hydraulic Height |
40 |
Drainage Area |
13.6 |
Nid Storage |
9000 |
Structural Height |
50 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
50 |
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.
Lloyd Vincent