Spring Creek 11-A 1296 Reservoir Report
Nearby: Spring Creek 10-1 Spring Creek 6-2
Last Updated: December 6, 2025
Spring Creek 11-A 1296, located in Johnson, Nebraska, is a local government-owned earth dam designed by USDA NRCS in 1978 for flood risk reduction.
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Summary
This dam stands at a height of 46 feet with a structural height of 51 feet and a length of 1391 feet, providing storage of 1740 acre-feet with a normal storage capacity of 345 acre-feet. Situated on Mans Creek, this dam serves a vital role in mitigating flood risks in the area with a significant hazard potential but assessed to be in satisfactory condition as of April 2018.
Managed by the Nebraska Department of Natural Resources, Spring Creek 11-A 1296 is state-regulated and undergoes regular inspections with a frequency of every three years. The dam has a drainage area of 5.2 square miles and a maximum discharge capacity of 660 cubic feet per second. With its stone core and soil foundation, the dam is an essential infrastructure for water resource management in the region, ensuring the safety and protection of nearby communities from potential flood events.
With its strategic location and purposeful design, Spring Creek 11-A 1296 plays a crucial role in water resource management in Nebraska. As part of the flood risk reduction infrastructure, this dam contributes to the overall resilience of the area against natural disasters, highlighting the importance of sustainable water resource and climate management practices in safeguarding communities and ecosystems.
Year Completed |
1978 |
Dam Length |
1391 |
Dam Height |
46 |
River Or Stream |
MANS CREEK |
Primary Dam Type |
Earth |
Surface Area |
46 |
Hydraulic Height |
45 |
Drainage Area |
5.2 |
Nid Storage |
1740 |
Structural Height |
51 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
51 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Nemaha River At Auburn
|
82cfs |
Missouri River At Nebraska City
|
22500cfs |
North Fork Big Nemaha River At Humboldt
|
67cfs |
Weeping Water Creek At Union
|
20cfs |
Salt Creek At Roca
|
5cfs |
Nishnabotna River Above Hamburg
|
1350cfs |
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 11-A 1296