Grindstone-Lost-Muddy Watershed Dam Lt-104 Reservoir Report
Last Updated: December 5, 2025
The Grindstone-Lost-Muddy Watershed Dam Lt-104, also known as Land Treatment Str Lt-104, is a privately owned earth dam located in DeKalb County, Missouri.
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Summary
Built in 1985 by the USDA NRCS, this dam is primarily used for grade stabilization along the TR- Lost Creek E Fork river or stream. Standing at 30 feet in height and with a length of 420 feet, the dam has a storage capacity of 39 acre-feet and serves to control water flow and prevent erosion in the area.
With a low hazard potential and a moderate risk assessment rating, the Grindstone-Lost-Muddy Watershed Dam Lt-104 plays a crucial role in mitigating potential flooding and protecting the surrounding environment. The dam features an uncontrolled spillway with a width of 12 feet and has not been rated for its condition assessment. While the dam itself does not have associated locks or outlet gates, it serves as a key structure in managing water resources and maintaining the stability of the watershed.
Despite not being regulated by the state, the Grindstone-Lost-Muddy Watershed Dam Lt-104 remains an essential component of the local water infrastructure. With its strategic location in Fairport, Missouri, and its function in grade stabilization, this earth dam stands as a testament to the importance of sustainable water management practices in the face of changing climate conditions.
Year Completed |
1985 |
Dam Length |
420 |
Dam Height |
30 |
River Or Stream |
TR- LOST CREEK E FORK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
30 |
Drainage Area |
117 |
Nid Storage |
39 |
Structural Height |
30 |
Outlet Gates |
None |
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.
Grindstone-Lost-Muddy Watershed Dam Lt-104