Lazy O Reservoir No 2 Reservoir Report

Last Updated: December 5, 2025

Lazy O Reservoir No 2, also known as Lazy O Ranch Reservoir, is a private water resource located in Snowmass, Colorado.


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Summary

Constructed in 1990 by ALPINE ENGINEERING and SCHMUESER, GORDON, MEYER INC, this Earth type dam stands at 18 feet in height and has a maximum storage capacity of 31 acre-feet. The primary purpose of this reservoir is for fish and wildlife management, as well as water supply.

Situated along the Capital Creek, Lazy O Reservoir No 2 covers a surface area of 3 acres and has a significant hazard potential with a fair condition assessment. The dam has been modified in 2001 and 2009 for hydraulic purposes, with an uncontrolled spillway type and one outlet valve. Inspected biennially, the reservoir has an associated risk assessment rating of moderate (3) and is regulated by the Colorado Department of Water Resources, ensuring its compliance with state standards.

Overall, Lazy O Reservoir No 2 serves as a vital resource for fish and wildlife conservation in the Pitkin County area, while also providing water supply benefits. With its picturesque location and important role in the local ecosystem, this reservoir stands as a testament to responsible water management practices and the preservation of natural habitats in the region.

Years Modified

2001 - Hydraulic, 2009 - Hydraulic

Year Completed

1990

Dam Length

580

Dam Height

18

River Or Stream

CAPITAL CREEK-TR

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

17

Nid Storage

31

Structural Height

18

Outlet Gates

Valve - 1

Hazard Potential

Significant

Foundations

Rock, Soil

Nid Height

18
       
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.