Prague Lake Reservoir Report
Last Updated: December 8, 2025
Prague Lake, located in Lincoln, Oklahoma, is a man-made reservoir constructed in 1984 by the USDA NRCS for flood risk reduction on Sand Creek.
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Summary
The dam stands at a height of 45 feet and has a length of 1460 feet, providing storage for up to 5656 acre-feet of water. With a surface area of 225 acres and a drainage area of 6.65 square miles, Prague Lake plays a vital role in managing water resources in the region.
Managed by the local government and regulated by the Oklahoma Water Resources Board, Prague Lake serves as a critical infrastructure for flood control in the area. The dam's spillway type is controlled, with a spillway width of 4 feet and an outlet gate equipped with a valve. The risk assessment for the dam is categorized as very high, highlighting the importance of regular inspections and maintenance to ensure its satisfactory condition and the safety of surrounding communities.
With a significant hazard potential, Prague Lake is a key component of the region's water resource management system. As a primary flood risk reduction structure, this earth dam provides essential protection for communities along Sand Creek. The dam's construction and design by the Natural Resources Conservation Service reflect a commitment to sustainable water management practices, making Prague Lake a vital asset for climate and water resource enthusiasts in the area.
Year Completed |
1984 |
Dam Length |
1460 |
Dam Height |
45 |
River Or Stream |
SAND CREEK |
Primary Dam Type |
Earth |
Surface Area |
225 |
Hydraulic Height |
45 |
Drainage Area |
6.65 |
Nid Storage |
5656 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
45 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Canadian River At Shawnee
|
166cfs |
Deep Fork At Warwick
|
23cfs |
North Canadian River Near Harrah
|
123cfs |
Little River Near Tecumseh
|
7cfs |
Cimarron River Near Ripley
|
528cfs |
North Canadian River Near Wetumka
|
200cfs |
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.
Prague Lake