Lake Jeano Dam Reservoir Report

Last Updated: December 5, 2025

Lake Jeano Dam, located in Piedmont, Missouri, is a privately owned earth dam constructed in 1964 with a primary purpose of flood risk reduction.


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Summary

The dam stands at a height of 23 feet and has a storage capacity of 172 acre-feet, providing both flood protection and recreational opportunities in the area. The dam, situated on Greasy Creek in Wayne County, Missouri, covers a surface area of 14 acres and serves a drainage area of 560 square miles.

Despite being designated as a high hazard potential dam, Lake Jeano Dam has not been rated for its current condition. The last inspection took place in August 1979, with no further assessment reported since then. The dam does not have an emergency action plan in place, nor does it meet guidelines for inundation maps or risk management measures. With its strategic location and vital role in flood risk reduction, Lake Jeano Dam serves as a significant feature in the water resource management of the region, requiring timely evaluation and maintenance to ensure its continued safety and effectiveness.

Year Completed

1964

Dam Height

23

River Or Stream

GREASY CREEK

Primary Dam Type

Earth

Surface Area

14

Drainage Area

560

Nid Storage

172

Structural Height

23

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

23
       
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.