Medicine Twp.Site Ca-36-M-Me-12 Reservoir Report
Nearby: Clay Township Site 002-1 Overlook
Last Updated: December 12, 2025
The Medicine Twp.Site Ca-36-M-Me-12, also known as the Jimmy Lyons Structure, is a grade stabilization earth dam located in Galt, Missouri along the TR-Medicine Creek.
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Summary
Completed in 1977, this structure serves the primary purpose of grade stabilization and has a maximum storage capacity of 108 acre-feet. With a low hazard potential and a moderate risk assessment rating of 3, this dam plays a crucial role in managing water resources in Mercer County, Missouri.
Constructed with stone core and soil foundation, the Medicine Twp.Site Ca-36-M-Me-12 stands at a height of 30 feet and stretches over a length of 960 feet. The spillway, which is uncontrolled with a width of 50 feet, has a maximum discharge capacity of 390 cubic feet per second. Although the dam is not regulated or permitted by the state, it continues to function effectively in maintaining water levels and protecting the surrounding area from potential flooding.
While the condition assessment of the dam is currently rated as "Not Rated," the risk management measures and emergency action plans for the structure are not clearly defined. Despite these gaps, the Medicine Twp.Site Ca-36-M-Me-12 remains an essential component of the local water infrastructure, showcasing the intersection of engineering, hydrology, and climate resilience in safeguarding communities against water-related hazards.
Year Completed |
1977 |
Dam Length |
960 |
Dam Height |
29 |
River Or Stream |
TR-MEDICINE CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Drainage Area |
51.2 |
Nid Storage |
108 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Medicine Twp.Site Ca-36-M-Me-12