Lavingon Dam Reservoir Report
Last Updated: December 19, 2025
Lavingon Dam, located in Hannibal, Missouri, is a private earth dam completed in 1973 with a primary purpose of serving as a Fish and Wildlife Pond.
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Summary
This dam, standing at 27 feet tall and with a length of 350 feet, has a maximum storage capacity of 61 acre-feet and a normal storage of 36 acre-feet. It is situated on the TR-GRASSY CREEK and is managed by the Rock Island District of the US Army Corps of Engineers.
Despite its low hazard potential, Lavingon Dam plays a crucial role in providing recreational opportunities and supporting wildlife in the area. With a moderate risk assessment rating of 3, the dam is not currently rated for its condition but is regularly inspected to ensure its safety and functionality. While it does not have outlet gates or locks, the dam features an uncontrolled spillway with a width of 15 feet to manage water discharge during high flow events.
Water resource and climate enthusiasts can appreciate the importance of Lavingon Dam as a key infrastructure for managing water resources and supporting diverse ecosystems in Marion County, Missouri. Its location along the TR-GRASSY CREEK and its role as a Fish and Wildlife Pond highlight the intersection of human development and environmental conservation, making it a valuable asset for both the local community and the surrounding natural habitat.
Year Completed |
1973 |
Dam Length |
350 |
Dam Height |
26 |
River Or Stream |
TR-GRASSY CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
25 |
Drainage Area |
224 |
Nid Storage |
61 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Fabius River Near Taylor
|
12cfs |
North River At Palmyra
|
15cfs |
Wyaconda River Above Canton
|
13cfs |
Bear Creek At Hannibal
|
2cfs |
Bear Creek Near Marcelline
|
5cfs |
Salt River Near Center
|
63cfs |
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.
Lavingon Dam