Lander Wastewater Treatment Reservoir Report

Last Updated: December 14, 2025

The Lander Wastewater Treatment facility in Fremont, Wyoming, stands as a critical infrastructure managed by the local government, ensuring the safe and efficient processing of wastewater in the region.


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Summary

This facility, known as Cell E, was completed in 1994 and is regulated by the State of Wyoming, with inspection, enforcement, and permitting processes in place to maintain its operations. With a low hazard potential and fair condition assessment, the facility plays a crucial role in managing water resources and protecting the environment.

Situated off-channel, the Lander Wastewater Treatment facility utilizes an Earth dam type with a height of 14 feet and a hydraulic height of 11 feet. The dam, constructed primarily of stone with a soil foundation, has a storage capacity of 80 acre-feet and a surface area of 5.8 acres. Despite its low hazard potential, the facility is subject to a high risk assessment, emphasizing the importance of effective risk management measures to ensure the safety and reliability of its operations.

Managed by the local government and designed by Engineering Assoc., the Lander Wastewater Treatment facility plays a crucial role in maintaining water quality and environmental sustainability in Fremont, Wyoming. With its strategic location and state-regulated operations, the facility serves as a key player in wastewater management, highlighting the intersection of water resources and climate considerations in infrastructure development and operation.

Year Completed

1994

Dam Length

2060

Dam Height

14

River Or Stream

OFF CHANNEL

Primary Dam Type

Earth

Surface Area

5.8

Hydraulic Height

11

Nid Storage

80

Structural Height

14

Hazard Potential

Low

Foundations

Soil

Nid Height

14
       
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.