Key Harbour Estate Dam #2 Reservoir Report
Last Updated: December 19, 2025
Key Harbour Estate Dam #2, located in St.
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Summary
Charles, Missouri, was completed in 1992 and serves as a vital flood risk reduction structure along the TR Peruque Creek. This private-owned earth dam, with a height of 41 feet and a length of 350 feet, provides a storage capacity of 13 acre-feet and covers a drainage area of 18 square miles. Despite its uncontrolled spillway type and high hazard potential, the dam is assessed to be in satisfactory condition as of December 2007.
Managed by the DAM AND RESERVOIR SAFETY PROG in Missouri, Key Harbour Estate Dam #2 is subject to regular inspections to ensure its structural integrity and safety. With a moderate risk assessment score of 3, the dam has emergency action plans in place, although details regarding their last revision and adherence to guidelines are pending clarification. The dam's primary purpose of flood risk reduction underscores its critical role in safeguarding the surrounding community from potential flooding events, making it an essential infrastructure asset in the region.
Year Completed |
1992 |
Dam Length |
350 |
Dam Height |
41 |
River Or Stream |
TR PERUQUE CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
18 |
Nid Storage |
13 |
Structural Height |
41 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
41 |
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.
Key Harbour Estate Dam #2
Windjammer Point 200, Lake Saint Louis