Grindstone-Lost-Muddy Watershed Dam D-22 Reservoir Report
Last Updated: December 6, 2025
Located in DeKalb, Missouri, the Grindstone-Lost-Muddy Watershed Dam D-22, also known as Site D22, was completed in 1978 by the USDA NRCS.
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Summary
This earth dam stands at a height of 20 feet and stretches 650 feet in length, with a storage capacity of 121 acre-feet. Its primary purpose is grade stabilization along the TR-N.Fork Lost Creek, serving to control and mitigate potential erosion and sedimentation in the area. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in managing water resources in the region.
Owned by the local government and not regulated by the state, the Grindstone-Lost-Muddy Watershed Dam D-22 is designed to withstand the hydraulic forces of its environment, with a spillway width of 40 feet for uncontrolled flow. While its condition remains unrated and no emergency action plan is currently in place, the dam's operational structure ensures its functionality in maintaining a stable water supply for the surrounding area. With a drainage area of 290 acres and a normal storage capacity of 44 acre-feet, this dam contributes to the overall ecosystem health and water quality in the region.
Managed by the Natural Resources Conservation Service, the Grindstone-Lost-Muddy Watershed Dam D-22 stands as a testament to sustainable water resource management practices. With its strategic location and design, this earth dam serves as a vital infrastructure for grade stabilization and erosion control, benefiting the local community and environment. As climate change continues to impact water resources, dams like D-22 play a crucial role in ensuring water security and resilience in the face of evolving environmental challenges.
Year Completed |
1978 |
Dam Length |
650 |
Dam Height |
20 |
River Or Stream |
TR-N.FORK LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
20 |
Drainage Area |
290 |
Nid Storage |
121 |
Structural Height |
20 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Grand River Near Gallatin
|
63cfs |
East Fork Big Creek Near Bethany
|
4cfs |
Platte River Near Agency
|
78cfs |
Little Platte River Near Plattsburg
|
1cfs |
Thompson River At Trenton
|
169cfs |
Missouri River At St. Joseph
|
23700cfs |
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-22