Grindstone Lmc F-30 Reservoir Report
Last Updated: December 18, 2025
Grindstone Lmc F-30, also known as Grindstone Lost-Muddy-Creek Watershed Dam F-30, is a local government-owned structure in Santa Rosa, Missouri.
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Summary
Designed by USDA NRCS, this earth dam serves the primary purpose of debris control and recreation. Completed in 1975, the dam stands at a height of 37 feet and has a length of 600 feet, providing a storage capacity of 128 acre-feet.
Located on the Lazy Creek tributary, Grindstone Lmc F-30 is regulated by the state's DAM AND RESERVOIR SAFETY PROGRAM, with regular inspections and enforcement ensuring its structural integrity. With a high hazard potential and a satisfactory condition assessment, the dam has a moderate risk rating. Despite having no outlet gates, the dam features an uncontrolled spillway with a width of 50 feet to manage maximum discharge levels.
Water resource and climate enthusiasts will be intrigued by the unique design and purpose of Grindstone Lmc F-30, as well as its vital role in controlling debris and providing recreational opportunities in the Daviess County area. The dam's historical significance, coupled with its state-regulated status and risk management measures, make it a compelling site for further exploration and study in the realm of water resource management and climate resilience.
Year Completed |
1975 |
Dam Length |
600 |
Dam Height |
37 |
River Or Stream |
TR-LAZY CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
210 |
Nid Storage |
128 |
Structural Height |
37 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
37 |
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 Lmc F-30