Lake Aggravation Reservoir Report

Last Updated: December 10, 2025

Lake Aggravation, located in Morse Mill, Missouri, is a private recreational reservoir built in 1960 with an earth dam type and a height of 30 feet.


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Summary

The dam holds a storage capacity of 225 acre-feet, with a normal storage level of 115 acre-feet and a surface area of 14 acres. Fed by Tyrey Creek and serving as a popular spot for water enthusiasts, the reservoir poses a high hazard potential but has not been rated for its condition.

Despite being privately owned and not regulated by the state, Lake Aggravation remains a key destination for recreational activities such as fishing, boating, and swimming. With its picturesque setting in Franklin County, this reservoir offers a tranquil escape for nature lovers and climate enthusiasts alike. While lacking certain safety assessments and emergency preparedness measures, the reservoir continues to attract visitors seeking a peaceful retreat in the heart of Missouri's natural beauty.

As climate change threatens water resources worldwide, the importance of monitoring and maintaining reservoirs like Lake Aggravation becomes increasingly crucial. With its potential for hazard and the need for updated risk assessment and emergency plans, this reservoir serves as a reminder of the ongoing challenges in managing water sources in the face of a changing climate. By raising awareness and investing in sustainable water management practices, Lake Aggravation can continue to provide a safe and enjoyable environment for outdoor enthusiasts while adapting to the evolving climate conditions.

Year Completed

1960

Dam Height

30

River Or Stream

TYREY CREEK

Primary Dam Type

Earth

Surface Area

14

Drainage Area

880

Nid Storage

225

Structural Height

30

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

30
       
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.