Grindstone-Lost-Muddy Watershed Dam D-31 Reservoir Report
Last Updated: December 5, 2025
Grindstone-Lost-Muddy Watershed Dam D-31, located in DeKalb, Missouri, was completed in 1975 and serves as a vital structure for grade stabilization along the TR-E.FORK LOST CREEK.
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Summary
Designed by USDA NRCS, this earth dam stands at a height of 25 feet and spans 500 feet in length, with a storage capacity of 121 acre-feet. Despite its low hazard potential, the dam is considered to have a moderate risk level, indicating the importance of ongoing monitoring and maintenance.
Owned by the local government, this dam plays a crucial role in managing water resources within the region, with a drainage area of 275 acres and a maximum discharge capacity of 290 cubic feet per second. The spillway, which is uncontrolled and 40 feet wide, helps regulate water flow during periods of high precipitation. While the dam's condition is currently not rated, its structural integrity is essential for ensuring the safety and security of surrounding communities in Pattonsburg. As climate change continues to impact water resources, the resilience of infrastructure like Grindstone-Lost-Muddy Watershed Dam D-31 becomes increasingly significant in safeguarding against potential risks and hazards.
With a primary purpose of grade stabilization, this dam serves as a testament to the collaboration between federal and local agencies in managing water resources effectively. The Natural Resources Conservation Service played a key role in the design of the dam, highlighting the importance of partnerships in enhancing the resilience of infrastructure in the face of changing climate patterns. As stakeholders work towards ensuring the long-term sustainability of water resources in the region, the Grindstone-Lost-Muddy Watershed Dam D-31 stands as a symbol of proactive adaptation and preparedness in the face of evolving environmental challenges.
Year Completed |
1975 |
Dam Length |
500 |
Dam Height |
25 |
River Or Stream |
TR-E.FORK LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
25 |
Drainage Area |
275 |
Nid Storage |
121 |
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 D-31