Toltec Reservoir Report

Last Updated: December 5, 2025

Toltec is a privately owned earth dam located on the North Laramie River in Albany, Wyoming.


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Summary

Completed in 1984, Toltec primarily serves the purpose of irrigation, with additional functions including fire protection, stock watering, and recreation. The dam stands at a height of 60 feet, with a hydraulic height of 53 feet and a length of 1750 feet. It has a storage capacity of 4541 acre-feet and covers a surface area of 228 acres, benefiting from a drainage area of 46 square miles.

Despite being classified as having a low hazard potential, Toltec is rated in fair condition as of the last inspection in 2019. The dam features an uncontrolled spillway with a width of 300 feet and is equipped with slide (sluice gate) outlet gates. With a moderate risk assessment rating, the dam is subject to regular inspections every 5 years to ensure its structural integrity and safety. Toltec's location in the scenic surroundings of Garrett, Wyoming, makes it a notable water resource for the local community and a point of interest for water resource and climate enthusiasts.

Year Completed

1984

Dam Length

1750

Dam Height

60

River Or Stream

NORTH LARAMIE

Primary Dam Type

Earth

Surface Area

228

Hydraulic Height

53

Drainage Area

46

Nid Storage

4541

Structural Height

60

Outlet Gates

Slide (sluice gate) - 0

Hazard Potential

Low

Foundations

Soil

Nid Height

60
       
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.