Tabo Creek Watershed Dam C-20 Reservoir Report

Last Updated: April 24, 2026

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Tabo Creek Watershed Dam C-20 is a key infrastructure built in 1962 for grade stabilization in Norborne, Missouri.


Summary

Designed by USDA NRCS, this earth dam stands at a height of 26 feet and has a maximum storage capacity of 67 acre-feet. Situated on the TR-Garrison Fork river, the dam serves a drainage area of 68 square miles, with a normal storage volume of 29 acre-feet and a surface area of 4 acres.

With a spillway width of 40 feet and a low hazard potential, Tabo Creek Watershed Dam C-20 is characterized by its uncontrolled spillway type. While it has not been rated for condition assessment, the dam is considered to have a moderate risk level. Although it does not have any outlet gates or associated structures, the dam plays a critical role in managing water resources and protecting the surrounding environment. For water resource and climate enthusiasts, Tabo Creek Watershed Dam C-20 represents a significant piece of infrastructure in Lafayette County, Missouri, contributing to the overall water management efforts in the region.

15-Day Long Term Forecast


Year Completed

1962

Dam Length

440

Dam Height

26

River Or Stream

TR-GARRISON FORK

Primary Dam Type

Earth

Surface Area

4

Hydraulic Height

26

Drainage Area

68

Nid Storage

67

Structural Height

28

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
Seasonal Comparison

5-Day Hourly Forecast Detail

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.
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Nearby Reservoirs