Wilde Reservoir Report

Last Updated: December 5, 2025

Wilde is a privately owned earth dam located in Miller County, Missouri, completed in 1998 by the USDA NRCS.


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Summary

The dam stands at 34 feet tall with a hydraulic height of 26 feet and a length of 400 feet, serving a primary purpose classified as 'Other'. With a normal storage capacity of 36 acre-feet and a maximum storage of 76 acre-feet, Wilde covers a surface area of 8 acres and drains an area of 320 acres.

Despite its low hazard potential, Wilde has a moderate risk rating of 3 due to unknown factors. The dam features an uncontrolled spillway with a width of 26 feet and is not regulated or inspected by any state agency. With a stone core and rock and soil foundations, Wilde has not been rated for its condition and lacks an Emergency Action Plan (EAP) or inundation maps. Overall, Wilde presents an intriguing case study for water resource and climate enthusiasts due to its unique design and operational characteristics within the St. Louis District of Missouri.

Year Completed

1998

Dam Length

400

Dam Height

29

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

26

Drainage Area

320

Nid Storage

76

Structural Height

34

Outlet Gates

None

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

34
       
Seasonal Comparison

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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.