Koenig Reservoir Report

Last Updated: December 5, 2025

Koenig, also known as Koenig Lake or King Reservoir, is a private water resource located in Weld County, Colorado.


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Summary

This reservoir, completed in 1882, serves primarily for irrigation purposes, with a dam height of 9 feet and a storage capacity of 100 acre-feet. Situated along the Big Thompson River, Koenig plays a crucial role in supporting agricultural activities in the region.

Despite being privately owned, Koenig is regulated by the Colorado Department of Water Resources, ensuring that the dam meets state permitting, inspection, and enforcement requirements. The dam's hazard potential is considered low, with a fair condition assessment as of the last inspection in July 2010. However, the risk assessment indicates a high risk level, emphasizing the importance of continued monitoring and maintenance to mitigate any potential hazards.

Although Koenig may not be as well-known as other reservoirs, its historical significance and role in sustaining local agriculture make it a valuable asset in the water resource management of Weld County. As climate change continues to impact water availability and quality, the maintenance and regulation of dams like Koenig will be essential in ensuring a reliable and sustainable water supply for the community.

Year Completed

1882

Dam Length

900

Dam Height

9

River Or Stream

BIG THOMPSON RIVER-OS

Primary Dam Type

Earth

Surface Area

27

Hydraulic Height

9

Nid Storage

100

Structural Height

9

Hazard Potential

Low

Nid Height

9
       
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.