Williams Dam South Sec 18 Reservoir Report
Last Updated: December 17, 2025
Williams Dam South Sec 18, located in Audrain County, Missouri, is a private earth dam primarily used for irrigation purposes.
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Summary
Built in 1973, this dam stands at a height of 25 feet and has a storage capacity of 401 acre-feet, with a normal storage level of 250 acre-feet. It is situated on the TR-DAVIS CR river/stream and covers a surface area of 30 acres, serving a drainage area of 470 acres.
Despite its important role in irrigation, Williams Dam South Sec 18 is classified as having a high hazard potential, although its condition assessment is currently listed as "Not Rated". With no state regulation or inspection, the dam's emergency action plan status and risk assessment remain unclear. The Kansas City District of the US Army Corps of Engineers oversees this dam, which does not have a designated spillway type or outlet gates.
For water resource and climate enthusiasts, Williams Dam South Sec 18 presents an intriguing case study in dam management and safety. With limited information available on its condition and emergency preparedness, monitoring and maintenance of this high hazard dam are crucial to ensure the safety of downstream communities and the sustainability of its irrigation functions in the face of changing climate conditions.
Year Completed |
1973 |
Dam Height |
25 |
River Or Stream |
TR-DAVIS CR |
Primary Dam Type |
Earth |
Surface Area |
30 |
Drainage Area |
470 |
Nid Storage |
401 |
Structural Height |
25 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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.
Williams Dam South Sec 18