Full Moon Aka Crystal Reservoir Report

Last Updated: December 4, 2025

Full Moon Aka Crystal is a federal-owned dam located in Ouray, Colorado, along the Red Mountain Creek.


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Summary

Managed by the Forest Service, this Earth dam stands at a height of 14 feet with a hydraulic height of 10 feet and a structural height of 19 feet. With a storage capacity of 80 acre-feet, the dam serves a primary purpose that is not specified, but it is regulated and inspected by the Bureau of Reclamation.

Despite its high hazard potential, Full Moon Aka Crystal is currently rated as "Not Rated" in terms of its condition assessment. The last inspection took place in August 2019, with an inspection frequency of once per year. The dam's risk assessment is moderate, with a DSAC assigned date not specified. Emergency preparedness measures, such as an Emergency Action Plan (EAP) and updated contact information, are also not reported for this structure.

Water resource and climate enthusiasts interested in Full Moon Aka Crystal can appreciate the dam's role in managing water flow along Red Mountain Creek and its potential impact on the surrounding area. With a focus on risk management and emergency preparedness, this dam presents both challenges and opportunities for ensuring the safety and sustainability of the local ecosystem.

Dam Length

1600

Dam Height

14

River Or Stream

RED MOUNTAIN CREEK

Primary Dam Type

Earth

Hydraulic Height

10

Nid Storage

80

Structural Height

19

Hazard Potential

High

Nid Height

19
       
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.