Little Sni-A-Bar Creek Dam 31 Reservoir Report
Last Updated: December 10, 2025
Little Sni-A-Bar Creek Dam 31, located in Lafayette County, Missouri, was completed in 1977 with the primary purpose of grade stabilization.
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Summary
The dam, designed by USDA NRCS, is an earth-type structure with a height of 33 feet and a length of 740 feet. It serves to control the flow of the TR-Little Sni-A-Bar Creek, with a maximum discharge capacity of 200 cubic feet per second.
With a storage capacity of 141 acre-feet, the dam covers a surface area of 6 acres and drains a watershed area of 155 square miles. Despite being classified as having a low hazard potential, the risk assessment for this dam is moderate. The dam features an uncontrolled spillway with a width of 30 feet and is currently rated as in "Not Rated" condition.
This vital infrastructure plays a crucial role in managing water resources and protecting the surrounding environment. As climate change continues to impact water availability and quality, the maintenance and monitoring of dams like Little Sni-A-Bar Creek Dam 31 are essential for ensuring the safety and sustainability of our water supply and ecosystems.
Year Completed |
1977 |
Dam Length |
740 |
Dam Height |
33 |
River Or Stream |
TR-LITTLE SNI-A-BAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
33 |
Drainage Area |
155 |
Nid Storage |
141 |
Structural Height |
35 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
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.
Little Sni-A-Bar Creek Dam 31