Wappapello Dam - Saddle Dike 1 Reservoir Report

Last Updated: December 5, 2025

Wappapello Dam - Saddle Dike 1, located in Wayne County, Missouri, is a vital piece of infrastructure managed by the US Army Corps of Engineers for flood risk reduction on the St.


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Summary

Francis River. Completed in 1941, this earth dam stands at a height of 114 feet and has a storage capacity of 1,134,600 acre-feet. With a surface area of 23,200 acres and a drainage area of 1,310 square miles, the dam plays a crucial role in managing water levels to protect downstream communities.

The dam's significant hazard potential underscores the importance of ongoing risk management measures implemented by the US Army Corps of Engineers. Regular inspections, maintenance, and emergency preparedness activities are integral to ensuring the dam's structural integrity and readiness to handle extreme weather events. Despite the inherent risks associated with dam operations, the USACE remains dedicated to collaborating with local stakeholders, emergency managers, and the public to enhance awareness and preparedness for potential dam-related emergencies.

As a key component of the region's flood control infrastructure, Wappapello Dam - Saddle Dike 1 serves as a critical safeguard against inundation and water release during periods of heightened risk. The USACE's proactive approach to monitoring and addressing potential threats underscores their commitment to safeguarding communities and protecting natural resources in the face of evolving climate challenges.

Year Completed

1941

Dam Length

380

Dam Height

13

River Or Stream

ST. FRANCIS

Primary Dam Type

Earth

Surface Area

23200

Hydraulic Height

103

Drainage Area

1310

Nid Storage

1134600

Structural Height

114

Hazard Potential

Significant

Nid Height

114
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.