Lander Wastewater Treatment Reservoir Report

Last Updated: December 5, 2025

Located in Fremont County, Wyoming, the Lander Wastewater Treatment facility, also known as Cell B, serves as a crucial infrastructure managed by the local government.


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Summary

This treatment plant, designed by ENGINEERING ASSOC., plays a vital role in the state's regulatory framework, ensuring proper inspection, enforcement, and permitting processes are in place. The facility, completed in 1994, primarily focuses on wastewater treatment with a low hazard potential and fair condition assessment.

With a dam height of 14 feet and a storage capacity of 205 acre-feet, the Lander Wastewater Treatment facility stands as an essential resource for managing water quality in the region. Operating off-channel and utilizing Earth dam types with Stone cores, this facility contributes to the protection of water resources in the area. Despite a high risk assessment rating, the facility's emergency preparedness and risk management measures are areas that could potentially be improved upon for ensuring the safety and efficiency of its operations.

Overall, the Lander Wastewater Treatment facility stands as a key player in water resource management in Wyoming. With its strategic location and focus on wastewater treatment, this infrastructure plays a crucial role in safeguarding the environment and public health. Continuous monitoring and improvement efforts are necessary to ensure the facility's long-term effectiveness and sustainability in the face of evolving climate challenges.

Year Completed

1994

Dam Length

2800

Dam Height

14

River Or Stream

OFF CHANNEL

Primary Dam Type

Earth

Surface Area

14.7

Hydraulic Height

11

Nid Storage

205

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.