Von Der Ahe Reservoir Report
Nearby: Lake Marion Dam Lake Von Der Rosa
Last Updated: December 21, 2025
Von Der Ahe is a privately owned Earth dam located in Pacific, Missouri, along the TR CALUEY CREEK.
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Summary
Built in 1977 for recreational purposes, this dam stands at a height of 34 feet and has a storage capacity of 364 acre-feet. With a surface area of 20 acres and a drainage area of 292 square miles, Von Der Ahe provides crucial water storage for the region.
Despite its importance, Von Der Ahe poses a high hazard potential due to its condition being not rated, as it has not been assessed since May 1980. This raises concerns about the safety and reliability of the dam, especially in the face of changing climate patterns and increased extreme weather events. Ensuring the proper maintenance and inspection of Von Der Ahe is essential to prevent any potential risks or emergencies that may arise.
As water resources and climate enthusiasts, it is crucial to advocate for regular inspections and maintenance of dams like Von Der Ahe to safeguard communities and the environment. By staying informed and involved in the oversight of these structures, we can contribute to the sustainable management of water resources and mitigate the impacts of climate change on our infrastructure.
Year Completed |
1977 |
Dam Height |
34 |
River Or Stream |
TR CALUEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
292 |
Nid Storage |
364 |
Structural Height |
34 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big River At Byrnesville
|
176cfs |
Meramec River At Pacific
|
557cfs |
Meramec River Near Eureka
|
858cfs |
Big River Near Richwoods
|
174cfs |
Bourbeuse River At Union
|
73cfs |
Kiefer Creek Near Ballwin
|
1cfs |
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.
Von Der Ahe