Grindstone-Lost-Muddy Watershed Dam C-36 Reservoir Report
Last Updated: December 5, 2025
Grindstone-Lost-Muddy Watershed Dam C-36, also known as Site C-36, is a local government-owned earth dam located in DeKalb, Missouri.
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Summary
Built in 1971 by the USDA NRCS, this dam serves the primary purpose of grade stabilization along TR-LOST CREEK. With a height of 25 feet and a length of 540 feet, the dam has a storage capacity of 104 acre-feet and normal storage of 41 acre-feet, covering a surface area of 8 acres.
Despite being unregulated by the state and having a low hazard potential, Grindstone-Lost-Muddy Watershed Dam C-36 has a moderate risk assessment due to its age and condition not being rated. The spillway, with a width of 40 feet, is uncontrolled, allowing for a maximum discharge of 252 cubic feet per second. While the dam currently does not have outlet gates and has not been modified in recent years, it remains a critical infrastructure for managing water resources and protecting against erosion in the area.
Overall, Grindstone-Lost-Muddy Watershed Dam C-36 is an essential structure for maintaining the stability of TR-LOST CREEK and surrounding areas in DeKalb, Missouri. With its stone core and soil foundation, the dam plays a crucial role in controlling water flow and preventing potential flooding. As climate change continues to impact water resources, the proper maintenance and monitoring of dams like C-36 are essential for ensuring the safety and sustainability of our communities.
Year Completed |
1971 |
Dam Length |
540 |
Dam Height |
25 |
River Or Stream |
TR-LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
25 |
Drainage Area |
166.4 |
Nid Storage |
104 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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 C-36