Dunn Dam Reservoir Report
Nearby: Meyers Lake Dam Miller Dam
Last Updated: December 6, 2025
Dunn Dam, located in Hannibal, Missouri, along the TR-Middle Fabius River, was completed in 1990 for the primary purpose of grade stabilization.
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Summary
This private earth dam stands at a height of 30 feet and has a length of 300 feet, with a storage capacity of 22 acre-feet. The dam serves multiple purposes including fire protection, stock or small fish pond, and grade stabilization, making it an essential resource in the area.
With a low hazard potential and a moderate risk assessment rating of 3, Dunn Dam has not been rated for its condition assessment. Despite being privately owned and not regulated by the state, the dam plays a crucial role in managing water resources in the region. Although it lacks certain safety measures such as Emergency Action Plans and inundation maps, Dunn Dam remains a vital infrastructure for water conservation and protection in Scotland County, Missouri.
Water resource and climate enthusiasts will find Dunn Dam an intriguing structure due to its unique design and purpose. As one of the key grade stabilization dams in the area, Dunn Dam contributes to the overall water management system along the TR-Middle Fabius River. Its low hazard potential and moderate risk assessment provide a sense of security, but the lack of certain safety measures underscores the importance of continued monitoring and maintenance to ensure the dam's resilience against potential hazards.
Year Completed |
1990 |
Dam Length |
300 |
Dam Height |
30 |
River Or Stream |
TR-MIDDLE FABIUS RIVER |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
30 |
Drainage Area |
19.2 |
Nid Storage |
22 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Des Moines River At Keosauqua
|
1800cfs |
Chariton River At Livonia
|
45cfs |
Chariton River At Novinger
|
86cfs |
Fox River At Wayland
|
8cfs |
Fox River At Bloomfield
|
7cfs |
Des Moines River At St. Francisville
|
1620cfs |
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.
Dunn Dam