Grindstone-Lost-Muddy Watershed Dam D-42 Reservoir Report
Last Updated: December 5, 2025
Grindstone-Lost-Muddy Watershed Dam D-42, located in DeKalb, Missouri, is a pivotal structure designed by the USDA NRCS for grade stabilization along the TR-E.FORK LOST CREEK.
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Summary
Completed in 1978, this earth dam stands at a height of 28 feet and spans 965 feet in length, with a storage capacity of 232 acre-feet. With a primary purpose of grade stabilization, this dam plays a crucial role in managing water resources in the region.
Despite being categorized with a low hazard potential and a moderate risk assessment, Grindstone-Lost-Muddy Watershed Dam D-42 is not currently regulated or inspected by the state. This uncontrolled dam features a spillway width of 60 feet and serves as a vital infrastructure for the surrounding community. While its condition is not rated, the dam's functionality in ensuring water resource management and flood control in the area is undeniable.
Owned by the local government and situated in the city of PATTONSBURG, this dam serves as a cornerstone for water resource management in the region. With its significant storage capacity and strategic design, Grindstone-Lost-Muddy Watershed Dam D-42 stands as a testament to the importance of sustainable infrastructure for climate resilience and water conservation efforts.
Year Completed |
1978 |
Dam Length |
965 |
Dam Height |
28 |
River Or Stream |
TR-E.FORK LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
28 |
Drainage Area |
234 |
Nid Storage |
232 |
Structural Height |
28 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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 D-42