Luark Reservoir Report

Last Updated: December 5, 2025

Luark is a private irrigation dam located in Eagle, Colorado, completed in 1947.


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Summary

The dam stands at a height of 42 feet and has a hydraulic height of 56 feet, with a length of 250 feet. It serves the primary purpose of providing water for irrigation, with a storage capacity of 103 acre-feet. The dam is constructed primarily of earth and stone materials, with a spillway type of uncontrolled and a low hazard potential.

Situated on an unnamed tributary to the Colorado River, Luark plays a crucial role in water resource management in the area. The dam has a maximum discharge of 355 cubic feet per second and covers a surface area of 5 acres, serving a drainage area of 4 square miles. With state regulation and inspection in place, Luark is a well-maintained structure that contributes to the local water supply and agricultural activities in the region.

Although last inspected in 1999, Luark has a moderate risk assessment score of 3, indicating some potential vulnerabilities that may require further monitoring and risk management measures. With a single slide (sluice gate) outlet gate and an uncontrolled spillway, Luark remains a vital part of the water infrastructure in the area, ensuring reliable water supply for irrigation purposes while maintaining a low hazard potential.

Year Completed

1947

Dam Length

250

Dam Height

42

River Or Stream

UNNAMED TRIB TO COLO R-TR

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

56

Drainage Area

4

Nid Storage

103

Structural Height

42

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

56
       
Seasonal Comparison

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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.