Watkins Mill State Park Dam Reservoir Report
Last Updated: December 14, 2025
Watkins Mill State Park Dam, located in Clay County, Missouri, is a vital structure designed by USDA NRCS to mitigate flood risks along TR-WILLIAMS CREEK.
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Summary
Completed in 1971, this earth dam stands at a height of 55 feet and spans 1600 feet in length. With a storage capacity of 2600 acre-feet, it serves as a crucial flood risk reduction measure for the region.
Managed by the DAM AND RESERVOIR SAFETY PROG, this state-regulated dam boasts a high hazard potential but is currently in satisfactory condition. Despite its primary purpose of flood risk reduction, Watkins Mill State Park Dam also offers recreational opportunities, covering a surface area of 100 acres. The dam's spillway, with a width of 100 feet, ensures controlled water discharge during high flow events, safeguarding downstream communities.
Ensuring the safety and integrity of Watkins Mill State Park Dam is a top priority, with regular inspections conducted every two years. With Sam Graves (R) as the Congressional Representative for the area, the dam plays a crucial role in protecting communities and enhancing water resource management in the region.
Year Completed |
1971 |
Dam Length |
1600 |
Dam Height |
55 |
River Or Stream |
TR-WILLIAMS CREEK |
Primary Dam Type |
Earth |
Surface Area |
100 |
Drainage Area |
1890 |
Nid Storage |
2600 |
Structural Height |
52 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
55 |
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.
Watkins Mill State Park Dam