Mononame 826 Reservoir Report
Nearby: Nims Lake Dam Gruhala Lake Dam
Last Updated: March 3, 2026
Mononame 826 is a privately-owned dam located in St.
Summary
Francois, Missouri, specifically in the city of Fredericktown. Completed in 1950, this earth dam stands at a height of 15 feet and spans a length of 900 feet, with a storage capacity of 96 acre-feet. Its primary purpose is for recreation, but it also serves as a water supply source. The dam impounds Musco Creek offstream, contributing to a drainage area of 89 square miles.
Despite being classified as low hazard potential, Mononame 826 has not been rated for its condition assessment. It is not regulated by the state and has not undergone recent inspections or maintenance. Furthermore, emergency preparedness measures, such as an Emergency Action Plan (EAP), have not been documented. Given its significance for both recreational and water supply purposes, there is a need for increased attention to ensure the safety and sustainability of this dam, especially in the face of changing climate patterns and water resource management challenges.
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15-Day Weather Outlook
Year Completed |
1950 |
Dam Length |
900 |
Dam Height |
15 |
River Or Stream |
MUSCO CREEK OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
89 |
Nid Storage |
96 |
Structural Height |
15 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
15 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Little St. Francis River At Fredericktown
|
104cfs |
St. Francis River Near Mill Creek
|
698cfs |
Big River Below Desloge
|
985cfs |
St. Francis River Near Saco
|
207cfs |
Big River At Irondale
|
416cfs |
South Fork Saline Creek Near Perryville
|
17cfs |
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 826