Tagert Lake Reservoir Report

Last Updated: December 4, 2025

Tagert Lake, located in Pitkin County, Colorado, is a privately owned reservoir that serves as a popular recreational spot for water and climate enthusiasts.


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Summary

Built in 1930, the earth dam stands at 9 feet high and spans 850 feet in length, with a capacity to store up to 82 acre-feet of water. Despite its low hazard potential, the dam is regulated by the Colorado Division of Water Resources, ensuring regular inspections and enforcement of safety measures.

Surrounded by the scenic beauty of the Roaring Fork River Valley, Tagert Lake offers opportunities for fishing, boating, and other outdoor activities. With a normal storage capacity of 50 acre-feet and a surface area of 8 acres, the reservoir provides a tranquil escape for visitors seeking to connect with nature. While the dam itself is not currently rated for its condition, the risk assessment categorizes it as having a high risk level of 2, prompting the need for ongoing risk management measures to ensure safety and stability.

Despite its age, Tagert Lake continues to be a beloved destination for those seeking a peaceful retreat in the heart of the Aspen region. With its rich history and stunning surroundings, this privately owned reservoir serves as a testament to the importance of responsible water resource management in a changing climate. As visitors enjoy the recreational opportunities provided by the lake, efforts to maintain the dam's integrity and safety remain a top priority for regulators and officials in the area.

Year Completed

1930

Dam Length

850

Dam Height

9

River Or Stream

ROARING FORK RIVER-TR

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

9

Nid Storage

82

Structural Height

9

Hazard Potential

Low

Nid Height

9
       
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.