Tenney-Hall Dam -Mononame 27 Dam Reservoir Report
Nearby: Gillis Lake Dam George Fogg Dam
Last Updated: December 13, 2025
Tenney-Hall Dam, also known as Mononame 27 Dam, is a privately owned structure located in Holt, Missouri, near the city of Mound City.
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Summary
Built in 1962, this earth dam stands at a height of 19 feet and has a storage capacity of 150 acre-feet. The primary purpose of this dam is flood risk reduction, but it also serves other functions such as recreation.
Despite being privately owned, Tenney-Hall Dam is not regulated by the state of Missouri and has not been subject to state permitting, inspection, or enforcement. The dam is associated with the TR-Davis Creek and is part of the Kansas City District of the US Army Corps of Engineers. With a high hazard potential and a condition assessment that is currently not rated, there is a need for ongoing risk management measures to ensure the safety and integrity of this important water resource infrastructure.
As a significant flood risk reduction structure in the area, Tenney-Hall Dam plays a crucial role in protecting the surrounding community from potential flooding events. With its historical significance and important function, this dam serves as a reminder of the vital role that water resource management plays in maintaining a safe and sustainable environment for all.
Year Completed |
1962 |
Dam Height |
19 |
River Or Stream |
TR-DAVIS CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
93 |
Nid Storage |
150 |
Structural Height |
19 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nodaway River Near Graham
|
134cfs |
Missouri River At Rulo
|
26600cfs |
Tarkio River At Fairfax Mo
|
55cfs |
Nodaway River Near Burlington Jct
|
63cfs |
One Hundred And Two River At Maryville
|
6cfs |
Big Nemaha River At Falls City
|
310cfs |
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.
Tenney-Hall Dam -Mononame 27 Dam