Vogler #1 Reservoir Report

Last Updated: December 5, 2025

Vogler #1, also known as Jackson Reservoir, is a privately owned dam located in Westminster, Colorado.


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Summary

Built in 1958, this earth dam serves primarily for irrigation purposes, with a storage capacity of 50 acre-feet. Situated on Big Dry Creek-TR, Vogler #1 has a structural height of 33 feet and a hydraulic height of 28 feet, making it a vital component of the local water resource infrastructure.

Despite being categorized as a low hazard potential structure, Vogler #1 is considered to have a high risk due to certain factors. The dam, with a length of 470 feet and a surface area of 4 acres, has not been assessed for its condition since August 1991. However, it is regulated and inspected by the Colorado Division of Water Resources, ensuring compliance with state permitting and enforcement regulations.

While Vogler #1 may not be the largest or most well-known dam, its role in providing water for irrigation in the region cannot be understated. Water resource and climate enthusiasts will appreciate the significance of this structure in managing and distributing water resources in Adams County, Colorado.

Year Completed

1958

Dam Length

470

Dam Height

26

River Or Stream

BIG DRY CREEK-TR

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

28

Drainage Area

1

Nid Storage

50

Structural Height

33

Hazard Potential

Low

Nid Height

33
       
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.