Spring Creek 6-A Reservoir Report
Nearby: Spring Creek 5-2 Spring Creek 7-B
Last Updated: December 6, 2025
Spring Creek 6-A is a flood risk reduction dam located in Johnson, Nebraska, designed by USDA NRCS and completed in 1978.
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Summary
The dam stands 36 feet tall with a structural height of 39 feet and a length of 913 feet, providing a storage capacity of 533 acre-feet and serving a drainage area of 1.5 square miles. With a low hazard potential and satisfactory condition assessment, this earth dam with stone core plays a crucial role in mitigating flood risks along the TR-Spring Creek in the region.
Managed by the local government and regulated by the Nebraska Department of Natural Resources, Spring Creek 6-A undergoes regular inspections every five years to ensure its structural integrity and functionality. The dam's primary purpose is flood risk reduction, aligning with its designed function to protect the surrounding area from potential inundation events. With a normal storage capacity of 107 acre-feet and a maximum discharge capacity of 1025 cubic feet per second, this dam plays a vital role in managing water resources and protecting the community from flooding events.
Located in the Kansas City District and falling under the jurisdiction of the state regulatory agency, Spring Creek 6-A serves as a key piece of infrastructure in the region's water resource management system. With its efficient design, satisfactory condition, and low hazard potential, this dam stands as a testament to effective flood risk reduction efforts and highlights the importance of proactive measures in addressing climate-related challenges.
Year Completed |
1978 |
Dam Length |
913 |
Dam Height |
36 |
River Or Stream |
TR-SPRING CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
36 |
Drainage Area |
1.5 |
Nid Storage |
533 |
Structural Height |
39 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
39 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Nemaha River At Auburn
|
82cfs |
North Fork Big Nemaha River At Humboldt
|
67cfs |
Missouri River At Nebraska City
|
22500cfs |
Weeping Water Creek At Union
|
20cfs |
Nishnabotna River Above Hamburg
|
1350cfs |
Salt Creek At Roca
|
5cfs |
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.
Spring Creek 6-A