Willow Creek Watershed Dam A- 28 Reservoir Report
Last Updated: December 14, 2025
Willow Creek Watershed Dam A- 28 is a vital infrastructure in Ray, Missouri, designed by the USDA NRCS for grade stabilization purposes.
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Summary
Completed in 1970, this earth dam stands at a height of 28 feet and has a structural height of 30 feet, with a maximum storage capacity of 71 acre-feet. Serving the primary purpose of grade stabilization, the dam plays a crucial role in managing water resources in the region.
Located in S34,T52N,R28W, along the TR-WILLOW CREEK, this dam is under the ownership of the local government in HENRIETTA. With a low hazard potential and moderate risk assessment, the dam has a spillway width of 40 feet and a maximum discharge capacity of 255 cubic feet per second. Despite not being rated for condition assessment, this dam provides essential flood control and water management services for the Willow Creek Watershed, covering a drainage area of 2600 acres.
With an uncontrolled spillway type, this dam is a key feature in the water resource infrastructure of Missouri. While its emergency action plan status and risk management measures are currently unspecified, Willow Creek Watershed Dam A- 28 remains a critical component in maintaining the environmental sustainability and climate resilience of the region. As an earth dam with stone core types and soil foundations, this structure exemplifies the importance of effective water resource management for local communities and ecosystems.
Year Completed |
1970 |
Dam Length |
475 |
Dam Height |
28 |
River Or Stream |
TR-WILLOW CREEK |
Primary Dam Type |
Earth |
Surface Area |
37 |
Hydraulic Height |
28 |
Drainage Area |
2600 |
Nid Storage |
71 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Willow Creek Watershed Dam A- 28