Loutre Valley Lake Dam Reservoir Report

Last Updated: December 9, 2025

Loutre Valley Lake Dam, located in Montgomery County, Missouri, is a privately owned structure completed in 1968 for the primary purpose of recreation.


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Summary

The dam, with a height of 35 feet and a length of 620 feet, holds a storage capacity of 290 acre-feet and covers a surface area of 17 acres. It is situated on the TR-Loutre River and falls under the jurisdiction of the DAM AND RESERVOIR SAFETY PROG in Missouri.

With a hazard potential rated as high, the dam has been assessed as satisfactory in condition as of December 2007. Regular inspections are conducted every two years to ensure its safety and functionality. Despite its moderate risk assessment, the dam lacks specific emergency action plans and inundation maps, raising concerns about the level of preparedness in case of emergencies.

This Earth-type dam features a stone core and is equipped with an uncontrolled spillway, with no outlet gates or locks. Despite its recreational significance, stakeholders and authorities should prioritize updating emergency response plans, conducting regular risk assessments, and implementing necessary risk management measures to ensure the safety and resilience of Loutre Valley Lake Dam.

Year Completed

1968

Dam Length

620

Dam Height

35

River Or Stream

TR-LOUTRE RIVER

Primary Dam Type

Earth

Surface Area

17

Drainage Area

358

Nid Storage

290

Structural Height

35

Outlet Gates

None

Hazard Potential

High

Foundations

Rock, Soil

Nid Height

35
       
Seasonal Comparison

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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.