Royal Lake Reservoir Report

Last Updated: December 15, 2025

Royal Lake, located in Lane, Kansas, is a privately owned reservoir regulated by the Kansas Department of Agriculture.


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Summary

With a primary purpose of recreation, the Earth-type dam stands at 45 feet tall and spans 770 feet in length, with a storage capacity of 1328 acre-feet. The spillway, measuring 50 feet in width, is uncontrolled, and the hazard potential is rated as low.

Constructed by Delmer F. Dunham, P.E., Royal Lake offers a tranquil escape for water resource and climate enthusiasts in the heart of Kansas. Situated along the Smoky Hill River, the reservoir provides a picturesque setting for outdoor activities such as fishing, boating, and wildlife observation. Despite being ungraded for condition assessment, the risk management measures are categorized as moderate, ensuring the safety of visitors and surrounding communities.

With its serene waters and scenic surroundings, Royal Lake is a hidden gem in the Tulsa District of Kansas. While the dam has not been modified since its completion, regular inspections by the state regulatory agency guarantee the structural integrity of the reservoir. Whether exploring the shores or enjoying water-based activities, visitors to Royal Lake can appreciate the beauty of this privately owned water resource while being mindful of its regulated status and low hazard potential.

Dam Length

770

Dam Height

45

River Or Stream

SMOKY HILL RIVER-TR

Primary Dam Type

Earth

Nid Storage

1328

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

45
       
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.