Haan Lake Dam Reservoir Report
Last Updated: December 5, 2025
Haan Lake Dam, located in DeKalb, Missouri, was completed in 1952 for the primary purpose of irrigation.
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Summary
The dam, standing at 27 feet high, serves multiple purposes including fire protection, stock, small fish pond, irrigation, and recreation. With a normal storage capacity of 25 acre-feet and a total storage of 72 acre-feet, the dam provides essential water resources for the surrounding area.
Owned privately, Haan Lake Dam is a low hazard potential structure that has not been rated for its condition assessment. Despite its low hazard potential, the dam plays a crucial role in water management and supply for the region. Situated on the TR to West Fork Lost Creek, the dam covers a surface area of 5 acres and has a drainage area of 65 acres.
Although not regulated by the state, Haan Lake Dam serves as a vital resource for the community of Maysville. With its diverse uses and strategic location, the dam underscores the importance of sustainable water resource management in the face of changing climate conditions.
Year Completed |
1952 |
Dam Height |
27 |
River Or Stream |
TR TO WEST FORK LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
65 |
Nid Storage |
72 |
Structural Height |
27 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
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.
Haan Lake Dam