Luttrell Lake Upper Dam Reservoir Report

Last Updated: December 5, 2025

Luttrell Lake Upper Dam, located in Potosi, Missouri, is a privately-owned structure primarily used for tailings storage.


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Summary

Built in 1934, this rockfill dam stands at a height of 44 feet and has a structural height of 55 feet. With a storage capacity of 257 acre-feet and a surface area of 20 acres, this dam plays a significant role in managing water resources in the area.

The dam is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri, ensuring that it is regularly inspected and maintained to meet safety standards. Despite being classified as having a "Significant" hazard potential, its condition assessment in 2015 was deemed satisfactory. The risk assessment for the dam is moderate, highlighting the importance of ongoing monitoring and risk management measures to ensure the safety of the surrounding community and water resources.

With its strategic location on the TR-MINE A BRETON stream, Luttrell Lake Upper Dam is a key infrastructure for water management in Washington County. As climate change impacts water resources, the importance of maintaining and regulating such dams becomes increasingly crucial. This dam serves as a testament to the intricate balance between harnessing water for economic activities while ensuring the safety and sustainability of the environment.

Year Completed

1934

Dam Length

2000

Dam Height

44

River Or Stream

TR-MINE A BRETON

Primary Dam Type

Rockfill

Surface Area

20

Drainage Area

125

Nid Storage

257

Structural Height

55

Outlet Gates

None

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

55
       
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.