Leo Journagan Lake Dam Reservoir Report

Last Updated: December 19, 2025

Leo Journagan Lake Dam, located in Galena, Missouri, is a privately-owned structure primarily used for recreation purposes.


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Summary

Completed in 1975, this Earth-type dam stands at a height of 20 feet and has a hydraulic height of 19 feet. With a storage capacity of 223 acre-feet and a normal storage level of 112 acre-feet, the dam serves the local community by providing water-based recreational activities in an 8-acre surface area lake.

Despite being unregulated by the state and not requiring regular inspections, Leo Journagan Lake Dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The spillway, which is uncontrolled and 18 feet wide, ensures that the dam can manage a maximum discharge of 250 cubic feet per second. While the risk assessment for the dam is moderate, with a rating of 3, there are no specific risk management measures or emergency action plans in place at this time. Overall, Leo Journagan Lake Dam remains a vital asset for the community, providing both recreational opportunities and a source of water resource management in the region.

Year Completed

1975

Dam Length

1100

Dam Height

20

River Or Stream

TR-JAMES RIVER

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

19

Drainage Area

284

Nid Storage

223

Structural Height

21

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

21
       
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.