Little Sni-A-Bar #23 Reservoir Report
Last Updated: January 11, 2026
Little Sni-A-Bar #23, also known as Little Sni-A-Bar Watershed Site #23 Dam, is a local government-owned structure in Lafayette, Missouri, designed by the USDA NRCS.
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Summary
This earth dam, completed in 1975, serves primarily for flood risk reduction along the TR to Little Sni-A-Bar Creek. With a height of 45 feet and a length of 600 feet, it holds a storage capacity of 600 acre-feet and covers a surface area of 20 acres within a drainage area of 670 acres.
The dam's spillway, of uncontrolled type, has a width of 40 feet, and it boasts a satisfactory condition assessment as of March 2021. Despite its high hazard potential, the dam's risk assessment is moderate (3), indicating a manageable level of risk. Regular inspections are conducted every three years to ensure its safety and functionality. Little Sni-A-Bar #23 not only serves in flood risk reduction but also offers benefits for fire protection, stock, small fish pond, and recreational purposes, making it a vital water resource structure in the region.
Year Completed |
1975 |
Dam Length |
600 |
Dam Height |
45 |
River Or Stream |
TR TO LITTLE SNI-A-BAR CREEK |
Primary Dam Type |
Earth |
Surface Area |
20 |
Drainage Area |
670 |
Nid Storage |
600 |
Structural Height |
45 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
45 |
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 #23