Little Sni-A-Bar Creek Dam 4 Reservoir Report

Last Updated: April 24, 2026

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Little Sni-A-Bar Creek Dam 4, located in Lafayette, Missouri, was completed in 1972 by the USDA NRCS and serves as a vital structure for flood risk reduction in the area.


Summary

This earth dam stands at a height of 31 feet and spans a length of 550 feet, with a storage capacity of 348 acre-feet. Despite its low hazard potential, the dam plays a crucial role in protecting the surrounding area from potential flooding events.

With a primary purpose of flood risk reduction, Little Sni-A-Bar Creek Dam 4 is designed with stone core and soil foundation, along the TR-Little Sni-A-Bar Creek. The dam features an uncontrolled spillway with a width of 40 feet, capable of handling a maximum discharge of 610 cubic feet per second. While the dam is not currently rated for condition assessment, it continues to serve its community effectively, with a moderate risk assessment rating of 3.

Overall, Little Sni-A-Bar Creek Dam 4 stands as a testament to the importance of water resource management and climate resilience in the face of increasing environmental challenges. As a local government-owned structure, it represents a collaborative effort to safeguard the community from potential flood hazards and highlights the essential role of infrastructure in protecting our natural resources for future generations.

15-Day Long Term Forecast


Year Completed

1972

Dam Length

550

Dam Height

29

River Or Stream

TR-LITTLE SNI-A-BAR CREEK

Primary Dam Type

Earth

Surface Area

9

Hydraulic Height

29

Drainage Area

240

Nid Storage

348

Structural Height

31

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

31
       
Seasonal Comparison

5-Day Hourly Forecast Detail

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.
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