Mononame 742 Reservoir Report
Nearby: Westfork Lake Dam Manito Dam
Last Updated: January 12, 2026
Mononame 742, located in Morgan County, Missouri, along TR Gabriel Creek, is a privately owned earth dam primarily used for recreation.
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Summary
Constructed in 1973, the dam stands at a height of 20 feet and has a storage capacity of 54 acre-feet, with a normal storage level of 33 acre-feet. The dam covers a surface area of 5 acres and serves a drainage area of 131 square miles.
Despite being classified as having a low hazard potential, Mononame 742 has not been rated for its condition assessment. The dam does not fall under state regulation or permitting, and there have been no recent inspections or emergency action plans prepared. The structure is under the jurisdiction of the Kansas City District of the US Army Corps of Engineers, and it is not associated with any federal funding or agencies. Climate and water resource enthusiasts may find interest in exploring the environmental implications and potential risks associated with this recreational dam in the heart of Missouri.
Year Completed |
1973 |
Dam Height |
20 |
River Or Stream |
TR GABRIEL CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
131 |
Nid Storage |
54 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Lamine River Near Otterville
|
27cfs |
Missouri River At Boonville
|
37200cfs |
Blackwater River At Blue Lick
|
47cfs |
Osage River Near Bagnell
|
1010cfs |
Hinkson Creek At Columbia
|
3cfs |
Moreau River Near Jefferson City
|
22cfs |
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 742