Grindstone-Lost-Muddy Watershed Dam B-36 Reservoir Report
Last Updated: December 5, 2025
Grindstone-Lost-Muddy Watershed Dam B-36, located in DeKalb, Missouri, is a vital structure designed by the USDA NRCS for grade stabilization along the TR-WEST FORK LOST CREEK.
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Summary
Completed in 1973, this earth-type dam stands at a height of 32 feet and spans a length of 480 feet, with a storage capacity of 160 acre-feet. Despite its low hazard potential and moderate risk assessment, the dam does not fall under state regulation or inspection.
With a primary purpose of grade stabilization, Grindstone-Lost-Muddy Watershed Dam B-36 serves to protect the surrounding area from erosion and flooding. Its spillway, with a width of 40 feet, ensures controlled water discharge during heavy rainfall events. Although the dam is not currently rated for its condition, its emergency action plan status and risk management measures remain unreported. As a significant asset in the Rock Island District, this dam plays a crucial role in managing water resources in the region.
While Grindstone-Lost-Muddy Watershed Dam B-36 may not be subject to state oversight, its strategic location in Pattonburg, Missouri, highlights its importance in safeguarding the local environment and community. Managed by the local government, this dam stands as a testament to the collaborative efforts of various agencies in ensuring the stability and resilience of water resources in the area. Enthusiasts of water resource management and climate adaptation can appreciate the intricate design and functionality of this essential infrastructure in sustaining the ecological balance of the region.
Year Completed |
1973 |
Dam Length |
480 |
Dam Height |
32 |
River Or Stream |
TR-WEST FORK LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
32 |
Drainage Area |
51.2 |
Nid Storage |
160 |
Structural Height |
32 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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 B-36