Troublesome Creek Watershed Dam R- 42 Reservoir Report

Last Updated: December 19, 2025

Troublesome Creek Watershed Dam R-42, also known as Str R-42, is a local government-owned structure located in Marion, Missouri.


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Summary

Designed by the USDA NRCS and completed in 1989, this Earth-type dam serves as a crucial component of flood risk reduction efforts in the region. Standing at a height of 24 feet with a length of 500 feet, the dam has a storage capacity of 145 acre-feet and covers a drainage area of 190 acres.

Despite its low hazard potential, the dam is rated as moderate in terms of risk, with a maximum discharge capacity of 348 cubic feet per second and an uncontrolled spillway measuring 58 feet in width. With a primary purpose of flood risk reduction, Troublesome Creek Watershed Dam R-42 plays a vital role in safeguarding the surrounding area from potential flooding events. While the dam's condition assessment is currently listed as "Not Rated," ongoing risk management measures are in place to ensure its continued functionality and safety for the community.

Year Completed

1989

Dam Length

500

Dam Height

24

River Or Stream

TR-TROUBLESOME CREEK

Primary Dam Type

Earth

Surface Area

12

Hydraulic Height

24

Drainage Area

190

Nid Storage

145

Structural Height

25

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.