Longbranch Reservoir Near Macon Reservoir Report

Last Updated: November 18, 2025

Longbranch Reservoir is a man-made lake located near Macon, Missouri, and was first built in 1965.


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Longbranch Reservoir near Macon main image
Longbranch Reservoir near Macon map preview

Summary

The reservoir has a surface area of 163 acres and is fed by Long Branch Creek, which also provides a source of water for nearby farms. The lake is maintained by the Long Branch Lake Association, which is responsible for monitoring water quality and maintaining the surrounding ecosystem. The reservoir is a popular spot for recreational activities such as boating, fishing, and swimming. Additionally, the lake is used for agricultural purposes, providing water for crops and livestock. The hydrology of the reservoir is partly dependent on surface flow from Long Branch Creek and snowpack from surrounding areas, which can impact water levels during periods of drought or heavy precipitation.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0.0%
Percent of Normal 100%
Minimum 782.3 ft
2020-12-25
Maximum 805.73 ft
2019-05-31
Average 790 ft
Hydraulic_Height 71
Drainage_Area 109
Year_Completed 1976
Nid_Storage 98000
River_Or_Stream EAST FORK LITTLE CHARITON
Structural_Height 80
Foundations Soil
Surface_Area 2430
Outlet_Gates Uncontrolled - 0
Dam_Length 3800
Hazard_Potential High
Primary_Dam_Type Earth
Nid_Height 80
       
Seasonal Comparison
Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels

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.