Trull Creek #1 Reservoir Report

Last Updated: December 5, 2025

Trull Creek #1 is a private irrigation dam located in Routt, Colorado, along the Trull Creek river.


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Summary

Built in 1972 by the USDA NRCS, this earth dam stands at 34 feet in height and has a storage capacity of 270 acre-feet. With a primary purpose of irrigation, it also serves for fire protection, stock, and small fish pond purposes. The dam covers a surface area of 17 acres and has a drainage area of 8 square miles, with a maximum discharge capacity of 1450 cubic feet per second.

Despite being classified as having a low hazard potential, Trull Creek #1's condition is assessed as fair as of the last inspection in October 2018. The dam has a spillway width of 50 feet and is uncontrolled, with no associated locks. While the risk assessment indicates a moderate level of risk, appropriate risk management measures are not specified in the available data. Overall, Trull Creek #1 presents an interesting case study for water resource and climate enthusiasts, showcasing the intersection of private ownership, regulatory oversight, and the critical role of dams in sustaining agricultural activities in the region.

Year Completed

1972

Dam Length

437

Dam Height

34

River Or Stream

TRULL CREEK

Primary Dam Type

Earth

Surface Area

17

Hydraulic Height

34

Drainage Area

8

Nid Storage

270

Structural Height

34

Hazard Potential

Low

Nid Height

34
       
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.