Perco Lake Dam South Reservoir Report
Last Updated: December 6, 2025
Perco Lake Dam South, located in Perry, Missouri, is a privately owned earth dam completed in 1969 for recreational purposes.
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Summary
Standing at a height of 22 feet, the dam has a storage capacity of 82 acre-feet and covers a surface area of 7 acres. The dam regulates the flow of the TR-South Fork Saline Creek and is situated in the St. Louis District, with a high hazard potential but currently rated as "Not Rated" in terms of condition assessment.
Despite not being regulated by the state, the dam poses a potential risk due to its high hazard classification. However, the emergency action plan (EAP) status and risk assessment for the structure remain unspecified. With a primary purpose of recreation, Perco Lake Dam South offers opportunities for water enthusiasts to enjoy the scenic beauty of the surrounding area. The dam is a vital part of the local ecosystem, providing a habitat for various species and contributing to the overall water resource management in the region.
Year Completed |
1969 |
Dam Height |
22 |
River Or Stream |
TR-SOUTH FORK SALINE CR |
Primary Dam Type |
Earth |
Surface Area |
7 |
Drainage Area |
95 |
Nid Storage |
82 |
Structural Height |
22 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
22 |
Seasonal Comparison
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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.
Perco Lake Dam South