Mononame40 Reservoir Report
Last Updated: December 5, 2025
Mononame40 is a privately owned dam located in Newtonia, Missouri, with a primary purpose of recreation.
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Summary
Built in 1950, this earth dam stands at a height of 15 feet and has a storage capacity of 80 acre-feet. The dam is situated on the Dry Branch river and covers an area of 10 acres with a drainage area of 40 square miles.
Despite being non-regulated by the state and having a low hazard potential, Mononame40 has not been rated for its condition assessment. With no recent inspection data available, the dam's emergency action plan status, risk assessment, and management measures remain unknown. However, its location in a relatively small community like Newtonia and its low hazard potential suggest a lower level of risk associated with this structure.
For water resource and climate enthusiasts interested in the management and maintenance of dams, Mononame40 serves as an intriguing case study. With its private ownership, recreational purpose, and limited state oversight, this dam presents unique challenges and opportunities for ensuring its safety and functionality in the face of changing environmental conditions.
Year Completed |
1950 |
Dam Height |
15 |
River Or Stream |
DRY BRANCH |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
40 |
Nid Storage |
80 |
Structural Height |
15 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Shoal Creek Above Joplin
|
151cfs |
Big Sugar Creek Near Powell
|
39cfs |
Spring River At Larussell
|
58cfs |
Spring River At Carthage
|
58cfs |
Indian Creek Near Lanagan
|
68cfs |
Buffalo Creek At Tiff City
|
13cfs |
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.
Mononame40