Grindstone-Lost-Muddy Watershed Dam Lt-102 Reservoir Report
Last Updated: December 5, 2025
Grindstone-Lost-Muddy Watershed Dam Lt-102, located in DeKalb, Missouri, stands as a vital structure for grade stabilization along the TR-GRINDSTONE CREEK.
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Summary
Designed by the USDA NRCS and completed in 1984, this earth dam stands at a height of 32 feet and stretches 350 feet in length. With a storage capacity of 31 acre-feet and a drainage area of 140 acres, this dam plays a crucial role in managing water resources in the region.
Despite its low hazard potential and moderate risk assessment, Grindstone-Lost-Muddy Watershed Dam Lt-102 has not been rated for its condition assessment. With an uncontrolled spillway and no outlet gates, this dam serves primarily for grade stabilization purposes. While it has not undergone recent inspections, it remains a key structure in the area's water management system. With Sam Graves (R) as the congressional representative, the dam continues to play a significant role in the local community's water resource management efforts.
Overall, Grindstone-Lost-Muddy Watershed Dam Lt-102 stands as a crucial earth dam in Missouri, serving to stabilize grades and manage water resources in the region. Despite its age, this dam continues to play a vital role in water management, with a storage capacity of 31 acre-feet and a drainage area of 140 acres. As efforts to assess its condition and risk management measures continue, this dam remains an essential component of the local water infrastructure.
Year Completed |
1984 |
Dam Length |
350 |
Dam Height |
32 |
River Or Stream |
TR-GRINDSTONE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
32 |
Drainage Area |
140 |
Nid Storage |
31 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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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.
Grindstone-Lost-Muddy Watershed Dam Lt-102