Appanoose County Roadgrade Dam 32-68-18 Reservoir Report
Nearby: Wright Dam De Louis Dam
Last Updated: December 12, 2025
Appanoose County Roadgrade Dam 32-68-18, located in Mendota, Missouri, is a local government-owned structure designed by USDA SCS to serve multiple purposes, including fire protection, stock maintenance, and small fish pond management.
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Summary
Completed in 1969, this earth dam stands at a height of 30 feet and stretches for 530 feet, with a storage capacity of 129 acre-feet and a surface area of 6 acres. Situated on TR-Shoal Creek, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, enforcement, and permitting to ensure its safety and functionality.
Despite its low hazard potential and moderate risk assessment, the condition of Appanoose County Roadgrade Dam 32-68-18 is currently not rated. Emergency action plans and inundation maps have not been prepared, but the dam meets regulatory guidelines and is inspected by the Iowa DNR. With a drainage area of 0.43 square miles and a controlled spillway, the dam serves as a vital resource for the local community's water needs and ecosystem health. Water resource and climate enthusiasts can appreciate the importance of this dam in providing essential services while managing potential risks associated with its operation.
Year Completed |
1969 |
Dam Length |
530 |
Dam Height |
30 |
River Or Stream |
TR-SHOAL CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
0.43 |
Nid Storage |
129 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Appanoose County Roadgrade Dam 32-68-18