Trout Lake Reservoir Report

Last Updated: December 5, 2025

Trout Lake, located in Hinsdale, Colorado, is a privately owned reservoir primarily utilized for irrigation purposes.


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Summary

Constructed in 1931, this earth dam stands at a height of 15 feet and spans a length of 280 feet. With a maximum storage capacity of 338 acre-feet and a normal storage of 198 acre-feet, Trout Lake covers a surface area of 28 acres and is fed by West Trout Creek.

Despite its low hazard potential, Trout Lake is categorized as having a high risk assessment due to its condition being assessed as fair in 2019. The dam is subject to state regulation, with the Colorado Division of Water Resources overseeing permitting, inspection, and enforcement. The lack of a spillway and associated structures may pose challenges in managing potential overflows and maximizing discharge. It is important for water resource and climate enthusiasts to monitor Trout Lake's risk management measures and stay updated on its condition assessment to ensure the safety and sustainability of this vital water resource.

Year Completed

1931

Dam Length

280

Dam Height

15

River Or Stream

WEST TROUT CREEK

Primary Dam Type

Earth

Surface Area

28

Hydraulic Height

15

Nid Storage

338

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
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.