Klocke Lake Dam Reservoir Report

Last Updated: December 6, 2025

Klocke Lake Dam, located in Hannibal, Missouri, serves as a vital structure for debris control along the TR-Grassy Creek.


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Summary

Built in 1969, this earth dam stands at a height of 18 feet and has a storage capacity of 67 acre-feet. While primarily serving as a debris control measure, the dam also fulfills purposes such as fire protection, stock or small fish pond, and recreational activities.

Despite its high hazard potential, Klocke Lake Dam has not been rated for its condition assessment. The dam's emergency action plan (EAP) status, inundation maps, risk assessment, and risk management measures are all marked as unknown. Additionally, the dam is not regulated or inspected by the state, highlighting the need for increased monitoring and assessment to ensure the safety and effectiveness of this critical infrastructure.

As water resource and climate enthusiasts, it is essential to recognize the importance of structures like Klocke Lake Dam in managing water resources and protecting communities from potential hazards. By advocating for regular inspections, updates to the EAP, and improved risk assessment measures, we can ensure the continued functionality and safety of dams like Klocke Lake for both current and future generations.

Year Completed

1969

Dam Height

18

River Or Stream

TR-GRASSY CREEK

Primary Dam Type

Earth

Surface Area

7

Drainage Area

250

Nid Storage

67

Structural Height

18

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

18
       
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.