Swiss Lake Estates Dam Reservoir Report

Last Updated: December 8, 2025

Swiss Lake Estates Dam, situated in Gasconade, Missouri, is a private recreational dam designed by the USDA NRCS and completed in 1967.


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Summary

With a height of 42 feet and a length of 750 feet, the dam provides normal storage of 520 acre-feet and a maximum storage capacity of 667 acre-feet. The dam is located on TR-Puncheon Creek and falls under the jurisdiction of the DAM AND RESERVOIR SAFETY PROG in Missouri.

Despite its satisfactory condition assessment, Swiss Lake Estates Dam has a high hazard potential, which is mitigated by a moderate risk assessment rating. The dam features an uncontrolled spillway with a width of 45 feet and no outlet gates. The last inspection was conducted in January 2017 with a frequency of every 3 years. The dam's emergency action plan was last revised in September 2013, ensuring preparedness for any potential incidents.

Water resource and climate enthusiasts would be intrigued by Swiss Lake Estates Dam's unique characteristics such as its earth core and stone foundation. The dam's location in a picturesque setting, coupled with its recreational purpose, makes it a significant landmark in the St. Louis District. As a privately owned structure, the dam serves as a vital resource for the community while adhering to state regulations and safety standards.

Year Completed

1967

Dam Length

750

Dam Height

42

River Or Stream

TR-PUNCHEON CREEK

Primary Dam Type

Earth

Surface Area

34

Drainage Area

667

Nid Storage

667

Structural Height

42

Outlet Gates

None

Hazard Potential

High

Foundations

Rock

Nid Height

42
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.