Joseph Lake Dam Reservoir Report
Last Updated: December 15, 2025
Joseph Lake Dam, located in Platte City, Missouri, serves as a critical infrastructure for flood risk reduction along the TR-Castille Creek.
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Summary
Built in 1974, this earth dam stands at 24 feet high and spans 350 feet in length, providing a maximum storage capacity of 374 acre-feet. The dam's primary purpose is flood risk reduction, but it also supports fire protection, stock watering, and recreational activities in the area.
Despite being privately owned, Joseph Lake Dam falls under the jurisdiction of the Rock Island District of the US Army Corps of Engineers. With a low hazard potential and a moderate risk assessment rating, this dam has not been officially rated for its condition, but it undergoes inspections every five years. The spillway, with a width of 32 feet, ensures the controlled release of excess water during periods of high discharge, further enhancing the dam's safety and efficacy in managing water resources in the region. For water resource and climate enthusiasts, Joseph Lake Dam stands as a testament to human ingenuity in harnessing nature's forces for the benefit of communities and ecosystems alike.
Year Completed |
1974 |
Dam Length |
350 |
Dam Height |
24 |
River Or Stream |
TR-CASTILLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
24 |
Drainage Area |
320 |
Nid Storage |
374 |
Structural Height |
24 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
Joseph Lake Dam