South Fork Blackwater River Dam A-26 Reservoir Report
Last Updated: December 6, 2025
South Fork Blackwater River Dam A-26, also known as Johnson Co.
°F
°F
mph
Wind
%
Humidity
Summary
# A-26 Dam, is a privately owned structure located in Kingsville, Missouri. Built in 1966 by USDA NRCS, this earth dam stands at 25 feet in height with a length of 1010 feet. Its primary purpose is grade stabilization, serving to control water flow and prevent erosion along the TR-W.BR.S.FK.BLACKWATER river.
With a storage capacity of 247 acre-feet, South Fork Blackwater River Dam A-26 covers a surface area of 6 acres and drains a watershed of 650 acres. Despite its low hazard potential, the dam is classified as having a moderate risk level. While it has not been inspected since 1980 and is currently not rated for condition assessment, the structure remains an essential part of the local water resource infrastructure.
As a significant feature in the Kansas City District, South Fork Blackwater River Dam A-26 plays a crucial role in managing the region's water resources. Its design and construction by the Natural Resources Conservation Service highlight the commitment to environmental conservation and sustainable water management practices in the area.
Year Completed |
1966 |
Dam Length |
1010 |
Dam Height |
25 |
River Or Stream |
TR-W.BR.S.FK.BLACKWATER |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
25 |
Drainage Area |
650 |
Nid Storage |
247 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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.
South Fork Blackwater River Dam A-26