Max Nelson Lake Dam Reservoir Report
Last Updated: December 19, 2025
Max Nelson Lake Dam, located in Pattonsburg, Missouri, serves as a critical structure for grade stabilization along the TR-Big Creek.
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Summary
Built in 1977, this private earth dam stands at a height of 26 feet, with a capacity of 91 acre-feet and a surface area of 7 acres. The dam's primary purpose is grade stabilization, while also catering to fire protection, stock, and small fish pond needs in the area.
With a low hazard potential and a moderate risk assessment rating, Max Nelson Lake Dam is deemed to be in good condition, although it has not been officially rated. Despite its age, the dam has not undergone any modifications and does not have any associated locks or outlet gates. While the dam does not fall under state jurisdiction or regulation, it plays a vital role in managing water resources and protecting the local environment in Harrison County, Missouri. Enthusiasts of water resources and climate will find Max Nelson Lake Dam to be an intriguing example of a privately owned structure contributing to the community's infrastructure and ecological well-being.
Year Completed |
1977 |
Dam Length |
460 |
Dam Height |
26 |
River Or Stream |
TR-BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
25 |
Drainage Area |
90 |
Nid Storage |
91 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Max Nelson Lake Dam