Kopmann Farms - Field #N1 Reservoir Report

Last Updated: December 21, 2025

Located in Washington, Missouri, Kopmann Farms - Field #N1 is a privately owned earth dam designed by USDA NRCS in 2007 for grade stabilization purposes along the TR-MISSOURI RIVER.


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Summary

The dam stands at a height of 34 feet with a hydraulic height of 34 feet and a structural height of 38 feet, stretching 241 feet in length. It has a storage capacity of 51.01 acre-feet, with a normal storage of 39.76 acre-feet, serving a drainage area of 25.6 square miles.

With a low hazard potential and a moderate risk assessment rating of 3, Kopmann Farms - Field #N1 has an uncontrolled spillway type and outlet gates. The dam's condition assessment is currently marked as "Not Rated," with the last inspection conducted in January 2008. Despite its low hazard potential, the dam's risk management measures, emergency action plan preparation, and inundation maps status remain unspecified. The dam has not been modified in recent years and does not feature any associated structures or locks.

For water resource and climate enthusiasts, Kopmann Farms - Field #N1 serves as a prime example of an earth dam designed for grade stabilization purposes in Missouri. Its location in Franklin County, with a proximity to the TR-MISSOURI RIVER, showcases the importance of sustainable water management practices in mitigating risks associated with dam structures. While the dam's hazard potential is low, its moderate risk assessment warrants continued monitoring and evaluation to ensure the safety and efficiency of the infrastructure in the face of changing environmental conditions.

Year Completed

2007

Dam Length

241

Dam Height

34

River Or Stream

TR-MISSOURI RIVER

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

34

Drainage Area

25.6

Nid Storage

51.01

Structural Height

38

Outlet Gates

Uncontrolled

Hazard Potential

Low

Foundations

Soil

Nid Height

38
       
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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.