Clarence Cannon Mem Watershed Dam 11 Reservoir Report
Last Updated: December 20, 2025
Clarence Cannon Memorial Watershed Dam 11, located in Lincoln County, Missouri, is a vital structure managed by the local government to reduce flood risks in the area.
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Summary
Constructed in 1974 by the USDA NRCS, this earth dam stands at a height of 33 feet and spans a length of 685 feet, with a capacity to store up to 128 acre-feet of water from the TR-Bryants Creek. Despite its low hazard potential, the dam's purpose primarily focuses on flood risk reduction, reflecting its critical role in protecting the surrounding community from potential water-related disasters.
With a drainage area of 147.2 square miles and a maximum discharge capacity of 470 cubic feet per second, Clarence Cannon Dam 11 plays a crucial role in managing water flow in the region. The dam's uncontrolled spillway, 40 feet wide, ensures safe water release during times of excess inflow. Although the dam's condition is currently not rated, its moderate risk assessment underscores the importance of ongoing monitoring and maintenance to ensure its continued effectiveness in flood mitigation. Water resource and climate enthusiasts can appreciate the significance of this structure in safeguarding the local community and environment from the impacts of extreme weather events.
Year Completed |
1974 |
Dam Length |
685 |
Dam Height |
33 |
River Or Stream |
TR-BRYANTS CR |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
33 |
Drainage Area |
147.2 |
Nid Storage |
128 |
Structural Height |
34 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Clarence Cannon Mem Watershed Dam 11