Johnson Lake Dam Reservoir Report
Nearby: Mallory Lake Dam Anderson Lake Dam
Last Updated: December 16, 2025
Johnson Lake Dam, located in Randolph County, Missouri, was completed in 1975 for the primary purpose of recreation.
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Summary
As a privately owned earth dam with a buttress core type, it stands at a height of 25 feet and has a storage capacity of 134 acre-feet. The dam overlooks the TR-ELK FORK of the Salt River, providing a picturesque setting for outdoor enthusiasts to enjoy.
Despite being classified as having a low hazard potential and not yet rated for condition assessment, Johnson Lake Dam remains a popular destination for water resource and climate enthusiasts. The dam's normal storage of 57 acre-feet and surface area of 10 acres offer opportunities for fishing, boating, and other recreational activities. Its location within the St. Louis District adds to its appeal for visitors seeking a tranquil natural escape.
As a privately owned structure with limited federal involvement, Johnson Lake Dam serves as a reminder of the importance of responsible stewardship of water resources. While its condition assessment and emergency preparedness measures are currently not rated, the dam continues to provide a valuable recreational space for the community. For those interested in exploring the intersection of water management and environmental conservation, Johnson Lake Dam offers a fascinating case study in sustainable development.
Year Completed |
1975 |
Dam Height |
25 |
River Or Stream |
TR- ELK FORK,SALT RIVER |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
464 |
Nid Storage |
134 |
Structural Height |
25 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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.
Johnson Lake Dam