Geisz Lake Dam Reservoir Report
Last Updated: December 5, 2025
Geisz Lake Dam, located in Keysville, Missouri, was completed in 1974 and is primarily used for recreation purposes.
°F
°F
mph
Wind
%
Humidity
Summary
The dam, with a height of 34 feet and a length of 700 feet, impounds water from the TR-YANKEE BR CROOKED CREEK, creating a surface area of 4 acres and a maximum storage capacity of 93 acre-feet.
Managed by private owners, Geisz Lake Dam is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri. The dam's hazard potential is rated as high, but its condition assessment is satisfactory. Despite its moderate risk level, the dam has not had an Emergency Action Plan (EAP) prepared or updated in recent years, raising concerns about emergency preparedness in case of a dam failure.
Given its importance for recreation and its role in water resource management in the area, continued monitoring and maintenance of Geisz Lake Dam are crucial to ensure the safety of nearby communities and the preservation of the surrounding environment.
Year Completed |
1974 |
Dam Length |
700 |
Dam Height |
34 |
River Or Stream |
TR-YANKEE BR CROOKED CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
40 |
Nid Storage |
93 |
Structural Height |
37 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
37 |
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.
Geisz Lake Dam