Teller Lake No. 5 - West Reservoir Report

Last Updated: December 5, 2025

Teller Lake No.


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Summary

5 - West, also known as Hoffman Lake, Dexter Lake, and Davidson Lake, is a charming water resource located in Boulder, Colorado. Managed by the local government, this dam was completed in 1911 for the primary purpose of irrigation, with additional recreational opportunities available. The earth dam stands at a height of 9 feet, with a length of 1700 feet and a storage capacity of 235 acre-feet.

Situated on Dry Creek-TR, Teller Lake No. 5 - West offers a serene 35-acre surface area for visitors to enjoy. With a spillway type of uncontrolled and a low hazard potential, the dam has been deemed to be in satisfactory condition as of the last inspection in October 2014. Despite its age, the structure has a moderate risk assessment score of 3, indicating a need for ongoing monitoring and risk management measures to ensure its continued safety and functionality.

Climate and water resource enthusiasts will appreciate the historical significance and ecological value of Teller Lake No. 5 - West. With its picturesque surroundings and important role in irrigation, this dam serves as a reminder of the delicate balance between human development and environmental conservation. As a regulated and permitted structure, it stands as a testament to the careful stewardship of Colorado's water resources by the Department of Water Resources.

Year Completed

1911

Dam Length

1700

Dam Height

9

River Or Stream

DRY CREEK-TR

Primary Dam Type

Earth

Surface Area

35

Hydraulic Height

9

Nid Storage

235

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.