Grindstone L-M-C Site A-2 Reservoir Report
Nearby: Cameron #3 Dam G-L-M Creek A-6
Last Updated: December 5, 2025
Grindstone L-M-C Site A-2, also known as Grindstone Lost-Muddy-Creek Site A-2, is a significant water resource located in DeKalb, Missouri.
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Summary
Owned by the local government and regulated by the DAM AND RESERVOIR SAFETY PROG, this site serves as a crucial water supply source in the area. Constructed in 1990, this Earth-type dam stands at a height of 53 feet and has a storage capacity of 3274 acre-feet, with a surface area of 177 acres and a drainage area of 13382 acres.
With a spillway width of 300 feet and a maximum discharge of 16242 cubic feet per second, Grindstone L-M-C Site A-2 has a low hazard potential and is deemed to be in satisfactory condition. The dam's outlet gates consist of a slide (sluice gate), and it is inspected every five years to ensure its safety and functionality. Despite its moderate risk assessment rating of 3, the site has not experienced any major modifications or incidents, making it a stable and reliable water resource for the community.
Year Completed |
1990 |
Dam Length |
1700 |
Dam Height |
53 |
River Or Stream |
GRINDSTONE |
Primary Dam Type |
Earth |
Surface Area |
177 |
Drainage Area |
13382 |
Nid Storage |
3274 |
Structural Height |
53 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
53 |
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 L-M-C Site A-2