Little Sni-A-Bar #22 Reservoir Report
Last Updated: January 11, 2026
Little Sni-A-Bar #22, a local government-owned dam located in Lafayette, Missouri, was constructed in 1975 by the USDA NRCS to serve the primary purpose of flood risk reduction along the TR to Little Sni-A-Bar Creek.
°F
°F
mph
Wind
%
Humidity
Summary
With a dam height of 40 feet and a length of 635 feet, this earth dam has a storage capacity of 203 acre-feet and a drainage area of 380 square miles. Despite its high hazard potential, the dam's condition is assessed as satisfactory, with a last inspection conducted in March 2016.
Managed by the DAM AND RESERVOIR SAFETY PROG in Missouri, Little Sni-A-Bar #22 is regulated, permitted, inspected, and enforced by the state to ensure its safety and efficacy in flood risk reduction. The dam features an uncontrolled spillway with a width of 30 feet and serves multiple purposes, including debris control and flood risk reduction. While the dam's risk assessment is moderate, with a risk score of 3, its risk management measures and emergency action plan status are not specified in the available data.
For water resource and climate enthusiasts, Little Sni-A-Bar #22 presents an intriguing case study of a vital infrastructure designed to mitigate flood risks in the region. With its strategic location and functional attributes, this dam stands as a testament to effective water management practices in Missouri, showcasing the collaborative efforts of federal agencies, local governments, and regulatory authorities to safeguard communities from potential hazards.
Year Completed |
1975 |
Dam Length |
635 |
Dam Height |
40 |
River Or Stream |
TR TO LITTLE SNI-A-BAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
380 |
Nid Storage |
203 |
Structural Height |
40 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
40 |
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 #22