Dejonge South Dam Reservoir Report
Nearby: Long Branch P-4a Long Branch 21
Last Updated: December 6, 2025
Dejonge South Dam, located in Richardson County, Nebraska, was completed in 2005 by the USDA NRCS with a primary purpose of flood risk reduction along the TR-Kirkham Creek.
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Summary
This private earth dam stands at a height of 26 feet and stretches 620 feet in length, providing a maximum storage capacity of 64 acre-feet and a normal storage of 8 acre-feet. Despite its low hazard potential, the dam's condition was assessed as satisfactory during its last inspection in May 2016.
Managed by the Nebraska Department of Natural Resources (DNR) and subject to state regulations, Dejonge South Dam plays a crucial role in mitigating potential flooding in the area. With a drainage area of 0.5 square miles and a maximum discharge capacity of 285 cubic feet per second, the dam serves as a vital infrastructure for ensuring the safety and protection of nearby communities. While the dam has not been modified in recent years, its satisfactory condition and low hazard potential signify its effectiveness in flood risk reduction.
Situated in the Omaha District and under the jurisdiction of the state of Nebraska, Dejonge South Dam demonstrates a commitment to ensuring public safety and environmental protection. With its stone core and soil foundation, the dam exemplifies sound engineering practices in its design and construction. As climate change continues to pose challenges in water resource management, dams like Dejonge South play a crucial role in safeguarding communities against the threat of flooding, highlighting the importance of sustainable infrastructure for a changing climate.
Year Completed |
2005 |
Dam Length |
620 |
Dam Height |
26 |
River Or Stream |
TR-KIRKHAM CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
26 |
Drainage Area |
0.5 |
Nid Storage |
64 |
Structural Height |
31 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Fork Big Nemaha River At Humboldt
|
67cfs |
Little Nemaha River At Auburn
|
82cfs |
Turkey C Nr Seneca
|
15cfs |
Big Nemaha River At Falls City
|
310cfs |
Big Blue R At Barneston Nebr
|
131cfs |
Missouri River At Rulo
|
25500cfs |
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.
Dejonge South Dam