Hoover Frankum B-20 Reservoir Report
Last Updated: December 21, 2025
Hoover Frankum B-20, located in Nodaway, Missouri, is a key water resource structure designed by the USDA NRCS to regulate the flow of TR-Mill Creek.
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Summary
This earth dam, completed in 1964, stands at a height of 36 feet and has a length of 800 feet, providing a storage capacity of 165 acre-feet. The dam serves multiple purposes, with a primary function classified as "Other," and is owned and regulated by the local government with state oversight.
Despite its low hazard potential and satisfactory condition assessment, Hoover Frankum B-20 undergoes regular inspections, with the last one conducted in July 2013. The dam's spillway, classified as uncontrolled, has a width of 30 feet to manage potential excess water flow. The risk assessment for this structure is moderate, indicating a need for continued monitoring and management to ensure its safety and effectiveness in water resource management within the region. For water resource and climate enthusiasts, Hoover Frankum B-20 offers a fascinating case study in dam infrastructure and management practices in Missouri.
Year Completed |
1964 |
Dam Length |
800 |
Dam Height |
36 |
River Or Stream |
TR-MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
353 |
Nid Storage |
165 |
Structural Height |
36 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
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.
Hoover Frankum B-20