Dr. A. J. Long Dam Reservoir Report

Last Updated: December 5, 2025

Nestled in the picturesque city of Lakeview Heights, Missouri, the Dr.


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Summary

A. J. Long Dam stands as a testament to engineering excellence and environmental stewardship. Completed in 1958, this private-owned earth dam serves primarily for recreational purposes, offering a serene retreat for water resource and climate enthusiasts alike. With a height of 12 feet and a storage capacity of 71 acre-feet, the dam provides a tranquil oasis along the TR Osage River, creating a surface area of 11 acres for visitors to enjoy.

Despite its low hazard potential and unlisted foundation type, the Dr. A. J. Long Dam remains a vital component of the local ecosystem, supporting a drainage area of 300 acres and providing essential water storage for the surrounding community. Maintained by the Kansas City District of the USACE, this buttress core dam has not only withstood the test of time but also continues to inspire awe and admiration among those who appreciate the delicate balance between water resource management and recreational enjoyment. As climate change looms large on the horizon, the Dr. A. J. Long Dam serves as a reminder of the importance of sustainable infrastructure development in safeguarding our natural resources for future generations to come.

In the heart of Benton County, Missouri, the Dr. A. J. Long Dam stands as a symbol of resilience and conservation, embodying the harmonious coexistence between human ingenuity and environmental preservation. With its rich history and enduring legacy, this earth dam remains a beacon of hope and inspiration for water resource and climate enthusiasts seeking to protect and celebrate the beauty of our planet's natural wonders.

Year Completed

1958

Dam Height

12

River Or Stream

TR OSAGE RIVER

Primary Dam Type

Earth

Surface Area

11

Drainage Area

300

Nid Storage

71

Structural Height

12

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

12
       
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.