Clarence Cannon Mem Watershed Dam 12 Reservoir Report

Last Updated: December 20, 2025

Clarence Cannon Mem Watershed Dam 12, located in Lincoln, Missouri, was completed in 1977 by the USDA NRCS to serve as a crucial flood risk reduction structure on the Old Kings Lake Creek.


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Summary

This earth dam stands at a height of 25 feet and has a hydraulic height of 25 feet, with a length of 530 feet and a storage capacity of 295 acre-feet. The dam's primary purpose is flood risk reduction, and it is classified as having a low hazard potential.

Despite being a local government-owned structure, Clarence Cannon Mem Watershed Dam 12 is not regulated or permitted by the state, nor does it undergo regular inspections. The dam's spillway type is uncontrolled, with a width of 120 feet, and it has no outlet gates. While the dam's condition assessment is currently marked as "Not Rated," its risk assessment is classified as moderate. This dam serves as a vital resource in managing flood risks in the area and plays a significant role in protecting the surrounding community from potential inundation events.

Year Completed

1977

Dam Length

530

Dam Height

25

River Or Stream

OLD KINGS LAKE CREEK

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

25

Drainage Area

147.2

Nid Storage

295

Structural Height

26

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
Seasonal Comparison

Weather Forecast

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.