Mononame 563 Reservoir Report
Nearby: Click Lake Dam Davis Lake Dam
Last Updated: December 6, 2025
Mononame 563, located in Washington, Missouri, is a privately owned earth dam constructed in 1968 for recreational purposes along the Henson Branch river.
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Summary
Standing at a height of 20 feet with a storage capacity of 64 acre-feet, this dam covers a surface area of 6 acres and drains a watershed of 98 acres. Despite its low hazard potential and not being state regulated, Mononame 563 serves as a vital recreational resource for the local community.
Managed by private owners, this dam has not been rated for its condition assessment and lacks emergency action plans or inundation maps. Although it has not undergone recent inspections, its low hazard potential suggests a minimal risk to the surrounding area. The Kansas City District oversees its operation, but with no federal agency funding or involvement in its construction or regulation, Mononame 563 remains primarily under private ownership and management.
For water resource and climate enthusiasts, Mononame 563 presents an interesting case study of a privately owned dam providing recreational benefits in a rural setting. Its location in Richwoods, Missouri, coupled with its modest size and storage capacity, highlights the importance of smaller-scale infrastructure in supporting local communities and enhancing outdoor recreational opportunities. As one of many such structures across the country, Mononame 563 exemplifies the diverse landscape of water resource management and the intersection of public and private interests in ensuring the sustainable use of natural resources.
Year Completed |
1968 |
Dam Height |
20 |
River Or Stream |
HENSON BRANCH |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
98 |
Nid Storage |
64 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big River Near Richwoods
|
207cfs |
Meramec River Near Sullivan
|
486cfs |
Big River At Byrnesville
|
226cfs |
Bourbeuse River At Union
|
110cfs |
Meramec River At Pacific
|
736cfs |
Meramec River Near Eureka
|
1290cfs |
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.
Mononame 563
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