Aowa Creek 31-5 Reservoir Report
Nearby: Aowa Creek 31-6 Aowa Creek 31-20a
Last Updated: December 13, 2025
Aowa Creek 31-5, located in Dixon County, Nebraska, is a vital structure designed by the USDA NRCS to address flood risk reduction and other purposes.
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Summary
Completed in 1976, this earth dam stands at a height of 44 feet and has a hydraulic height of 42 feet. With a structural height of 50 feet and a length of 1010 feet, it provides significant storage capacity with a normal storage of 13 acre-feet and a maximum storage of 114 acre-feet. The dam covers a surface area of 2 acres and serves a drainage area of 0.4 square miles, with a maximum discharge capacity of 78 cubic feet per second.
Managed by the local government and regulated by the Nebraska Department of Natural Resources, Aowa Creek 31-5 has a low hazard potential and is assessed to be in satisfactory condition. The dam is subject to regular inspections, with the last assessment conducted in April 2020. Despite its low risk profile, the structure plays a crucial role in mitigating flood risks in the area and ensuring the safety of nearby communities. With its strategic location and effective design, Aowa Creek 31-5 exemplifies the collaborative efforts between government agencies and conservation services in managing water resources and climate-related challenges in Nebraska.
Year Completed |
1976 |
Dam Length |
1010 |
Dam Height |
44 |
River Or Stream |
TR-POWDER CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
42 |
Drainage Area |
0.4 |
Nid Storage |
114 |
Structural Height |
50 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
50 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Vermillion River Nr Vermillion Sd
|
33cfs |
Logan Creek At Wakefield
|
149cfs |
Missouri River At Sioux City
|
15100cfs |
Big Sioux River At Akron
|
816cfs |
Omaha Cr At Homer
|
45cfs |
Perry Creek Near Milnerville
|
25cfs |
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.
Aowa Creek 31-5
Powder Creek