Rock Creek 11-A Reservoir Report
Nearby: Rock Creek 1-2 Rock Creek 1-1
Last Updated: December 13, 2025
Rock Creek 11-A is a local government-owned earth dam located in Pawnee, Nebraska, designed by the USDA NRCS in 1969 for flood risk reduction along the TR-Rock Creek.
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Summary
This 36-foot-tall structure with a length of 770 feet has a storage capacity of 401 acre-feet and serves a drainage area of 1.3 square miles. Despite its low hazard potential and satisfactory condition assessment, the dam is regulated by the Nebraska Department of Natural Resources, with regular inspections conducted every five years to ensure its safety and effectiveness in flood control.
Managed by the Natural Resources Conservation Service, Rock Creek 11-A plays a crucial role in mitigating flood risks in the area, with a maximum discharge capacity of 1,016 cubic feet per second. Its stone core and soil foundation contribute to its stability, while the dam's primary purpose and design focus on flood risk reduction. The dam's location in a rural setting underscores the importance of sustainable water resource management and climate adaptation strategies in safeguarding communities and ecosystems from the impacts of extreme weather events.
As climate change intensifies the frequency and intensity of floods in the region, the significance of infrastructure like Rock Creek 11-A becomes increasingly apparent. With a history of satisfactory performance and low hazard potential, this earth dam serves as a testament to the effectiveness of proactive flood risk reduction measures in safeguarding communities and enhancing resilience to climate impacts. Continued monitoring and maintenance of such critical water management infrastructure are essential to ensure the safety and well-being of residents living downstream of Rock Creek 11-A.
Year Completed |
1969 |
Dam Length |
770 |
Dam Height |
34 |
River Or Stream |
TR-ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
33 |
Drainage Area |
1.3 |
Nid Storage |
401 |
Structural Height |
36 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Fork Big Nemaha River At Humboldt
|
67cfs |
Big Blue R At Barneston Nebr
|
131cfs |
Turkey C Nr Seneca
|
15cfs |
Little Nemaha River At Auburn
|
82cfs |
Big Blue R At Marysville
|
166cfs |
Turkey Creek Near De Witt
|
10cfs |
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.
Rock Creek 11-A