Shadow Mountain Reservoir Reservoir Report

Last Updated: December 5, 2025

Shadow Mountain Reservoir is located in Grand County, Colorado and is a man-made lake created in the early 1940s.


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Summary

The reservoir serves as a storage site for water that is used for agricultural and recreational purposes. The reservoir is fed by the Colorado River and its tributaries, as well as by snowpack from the surrounding mountains. The water is managed and distributed by the Bureau of Reclamation, and the Northern Colorado Water Conservancy District. Shadow Mountain Reservoir is popular for boating, fishing, and camping, and is surrounded by mountains that provide opportunities for hiking and skiing. The reservoir is also a vital source of water for the surrounding agricultural community, providing irrigation water to farmers throughout the region.

Reservoir Details

Storage 24hr Change 0.0%
Percent of Normal 100%
Minimum 75.859 acre-ft
2008-06-12
Maximum 18,074.6 acre-ft
2006-07-10
Average 16,915 acre-ft
       
Seasonal Comparison
Storage Levels
Storage Levels
Pool Elevation Levels
Total Release Levels
Inflow Levels

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.