Mach Lake Dam Reservoir Report
Last Updated: December 6, 2025
Mach Lake Dam, located in Perry County, Missouri, was completed in 1972 and serves primarily as a Fish and Wildlife Pond.
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Summary
The dam, classified as an Earth type, stands at a height of 30 feet with a hydraulic height of 28 feet and a length of 300 feet. It has a storage capacity of 100 acre-feet and covers a surface area of 1 acre, with a drainage area of 160 acres. The dam's spillway is uncontrolled, with a width of 12 feet, and has a low hazard potential.
Despite being privately owned, Mach Lake Dam is not regulated or inspected by the state of Missouri. The dam's purpose includes recreational activities in addition to providing a habitat for fish and wildlife. Although last inspected in 1981, the condition assessment of the dam is currently not rated, and it has a moderate risk level of 3. With its picturesque location along TR-GOOSE CREEK and its importance in supporting local biodiversity, Mach Lake Dam remains a fascinating site for water resource and climate enthusiasts to explore.
Year Completed |
1972 |
Dam Length |
300 |
Dam Height |
29 |
River Or Stream |
TR-GOOSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
28 |
Drainage Area |
160 |
Nid Storage |
100 |
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.
Mach Lake Dam