Mononame 821 Reservoir Report
Nearby: Larry Baer Dam Ken Buchheit Dam
Last Updated: December 6, 2025
Mononame 821 is a privately-owned dam located in Cape Girardeau, Missouri, along the TR APPLE RIVER.
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Summary
Built in 1968 for recreational purposes, this earth dam stands at a height of 10 feet and has a storage capacity of 54 acre-feet. The dam is classified as having a low hazard potential and is currently in "Not Rated" condition.
Despite being privately owned, Mononame 821 is not regulated or inspected by the state, indicating a lack of oversight in terms of safety and maintenance. The dam does not have any associated structures or outlet gates, and its spillway type and width are not specified. With a drainage area of 610 acres and a normal storage capacity of 13 acre-feet, this dam serves primarily for recreational use in the area.
While Mononame 821 may not be a high-risk structure, its lack of state regulation and inspection raises concerns about its long-term safety and maintenance. With its location in a rural area and limited information available on its condition assessment, there is a need for increased monitoring and oversight to ensure the safety of the dam and the surrounding community.
Year Completed |
1968 |
Dam Height |
10 |
River Or Stream |
TR APPLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
610 |
Nid Storage |
54 |
Structural Height |
10 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
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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 821