Johnson Lake Dam Reservoir Report
Nearby: Jones Lake Dam Paul Jones Lake Dam
Last Updated: December 18, 2025
Johnson Lake Dam, located in Livingston County, Missouri, was completed in 1977 and serves multiple purposes including fire protection and as a stock or small fish pond.
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Summary
This private earth dam, with a height of 25 feet, has a storage capacity of 27 acre-feet and covers a surface area of 2 acres. Despite its relatively small size, the dam has a high hazard potential and is currently not rated for its condition assessment.
Situated on TR-Shoal Creek, Johnson Lake Dam is managed by a private owner and is not regulated by state agencies. The dam does not have a spillway and lacks inspection and enforcement mechanisms, posing potential risks to downstream areas in case of a failure. The surrounding area, including the city of Dawn, relies on this dam for its fire protection needs and as a source of water for stock and fish.
For water resource and climate enthusiasts, Johnson Lake Dam presents an interesting case study of a privately owned structure with multiple functions but lacking in regulatory oversight and maintenance. The dam's location in a high hazard potential area highlights the importance of proper monitoring and assessment to ensure the safety of downstream communities and the preservation of water resources. Further research and attention to this dam could provide valuable insights into the management of smaller earth dams in similar settings.
Year Completed |
1977 |
Dam Height |
25 |
River Or Stream |
TR-SHOAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
25 |
Nid Storage |
27 |
Structural Height |
25 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek Near Braymer Mo
|
0cfs |
Grand River At Chillicothe
|
361cfs |
Grand River Near Sumner
|
223cfs |
Wakenda Creek At Carrollton
|
39cfs |
Grand River Near Gallatin
|
61cfs |
Locust Creek Near Linneus
|
31cfs |
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