South Fork Blackwater River Dam E-29 Reservoir Report
Last Updated: December 6, 2025
South Fork Blackwater River Dam E-29, also known as Site E-29, is a local government-owned structure located in Sweet Springs, Missouri.
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Summary
Built in 1979 by the USDA NRCS, this earth dam stands at a height of 28 feet and stretches 1200 feet in length, serving primarily for flood risk reduction along Pin Oak Creek. With a maximum storage capacity of 500 acre-feet and a normal storage level of 59 acre-feet, the dam covers a drainage area of 198.4 square miles.
Despite its low hazard potential, the dam has not been rated for its condition assessment. It operates with an uncontrolled spillway width of 30 feet and a maximum discharge capacity of 357 cubic feet per second. With a moderate risk assessment rating of 3, the dam does not have an Emergency Action Plan in place and lacks updated emergency contacts and inundation maps. While it remains unregulated by the state and federal agencies, the dam stands as a crucial infrastructure for flood control in the region, highlighting the importance of regular inspection and maintenance to ensure its continued effectiveness in mitigating flood risks and protecting the surrounding community.
Year Completed |
1979 |
Dam Length |
1200 |
Dam Height |
28 |
River Or Stream |
PIN OAK CREEK |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
28 |
Drainage Area |
198.4 |
Nid Storage |
500 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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 E-29