Great Bear Lake Dam Reservoir Report
Nearby: Lost Lake Dam Lake Ralph Foster Dam
Last Updated: December 19, 2025
Great Bear Lake Dam in Missouri, completed in 1971, is a privately owned structure designed for fire protection, stock, or small fish pond purposes.
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Summary
This earth dam with a buttress core stands at a height of 40 feet and stretches 500 feet in length, with a storage capacity of 107 acre-feet. Situated in Webster County, the dam regulates water flow from the TR to James River and is under the supervision of the DAM AND RESERVOIR SAFETY PROGRAM.
With a hazard potential rated as "High" and a moderate risk assessment, Great Bear Lake Dam plays a crucial role in water resource management and flood control in the region. Although its condition is currently not rated, the dam undergoes regular inspections and is equipped with an uncontrolled spillway. While it has no outlet gates, the dam's maximum discharge capacity is 480 cubic feet per second, serving as a vital structure for the surrounding community's safety and well-being.
Year Completed |
1971 |
Dam Length |
500 |
Dam Height |
40 |
River Or Stream |
TR TO JAMES RIVER |
Surface Area |
8 |
Drainage Area |
350 |
Nid Storage |
107 |
Structural Height |
40 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
40 |
Seasonal Comparison
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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.
Great Bear Lake Dam