Grindstone-Lost-Muddy Watershed Dam Lt-157 Reservoir Report
Last Updated: December 6, 2025
Located in DeKalb, Missouri, the Grindstone-Lost-Muddy Watershed Dam Lt-157, also known as Land Treatment Str T-157, was designed by the USDA NRCS in 1984 for grade stabilization along TR- Lost Creek.
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Summary
This private earth dam stands at 34 feet in height and spans 400 feet in length, with a storage capacity of 44 acre-feet and a surface area of 6 acres. Despite its low hazard potential and moderate risk assessment, the dam has not been inspected or assessed for condition, posing potential challenges for its long-term structural integrity.
With its primary purpose being grade stabilization, the Grindstone-Lost-Muddy Watershed Dam Lt-157 plays a crucial role in managing the water resources of the surrounding area. As part of the Rock Island District, this dam serves to control the flow of water along TR- Lost Creek, ensuring the protection of downstream communities from flooding events. While the dam's spillway type is uncontrolled and it lacks outlet gates, its stone core and soil foundation provide a solid structure for managing water levels effectively.
As water resource and climate enthusiasts, understanding the importance of infrastructure like the Grindstone-Lost-Muddy Watershed Dam Lt-157 is essential for ensuring the sustainable management of our natural resources. With a focus on grade stabilization and a capacity to store 44 acre-feet of water, this earth dam represents a critical piece of the local watershed management system. Advocating for regular inspections and condition assessments will be key in maintaining the dam's operational effectiveness and safeguarding the surrounding communities from potential risks associated with its structural integrity.
Year Completed |
1984 |
Dam Length |
400 |
Dam Height |
34 |
River Or Stream |
TR- LOST CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
34 |
Drainage Area |
210 |
Nid Storage |
44 |
Structural Height |
34 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
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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 Lt-157