Swan Creek 20 Reservoir Report
Nearby: Swan Creek 92 Swan Creek 94
Last Updated: December 6, 2025
Swan Creek 20 is a local government-owned dam located in Farmstead, Nebraska, designed by the USDA NRCS to reduce flood risks along the South Fork Swan Creek.
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Summary
This earth dam stands at a height of 47 feet and has a structural height of 55 feet, completed in 1987. With a maximum storage capacity of 3,978 acre-feet and a normal storage of 341 acre-feet, Swan Creek 20 plays a crucial role in managing water flow in the area, covering a drainage area of 7.7 square miles.
Managed by the Nebraska Department of Natural Resources, Swan Creek 20 is subject to state regulation, inspection, and enforcement measures to ensure its structural integrity and safety. Its hazard potential is rated as high, but its condition assessment in 2020 was deemed satisfactory. The dam's emergency action plan is regularly updated, and it meets guidelines for risk management. Swan Creek 20 serves as a vital infrastructure for flood risk reduction in Saline County, Nebraska, demonstrating effective collaboration between local government and federal agencies in safeguarding water resources and the surrounding communities.
Year Completed |
1987 |
Dam Length |
1760 |
Dam Height |
47 |
River Or Stream |
S FK SWAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
54 |
Hydraulic Height |
44 |
Drainage Area |
7.7 |
Nid Storage |
3978 |
Structural Height |
55 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
55 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Swan Creek 20
Lone Star