Lower Jordan Dam Reservoir Report
Nearby: Jordan Dam 2 Bill Coffee Dam 1
Last Updated: December 6, 2025
The Lower Jordan Dam in Nebraska, completed in 1941, serves as a key irrigation structure on the TR-Antelope Creek, with a primary purpose of supporting agricultural water needs in the region.
°F
°F
mph
Wind
%
Humidity
Summary
Owned by the state and regulated by the NE DNR, this earth dam stands at 13 feet tall and has a storage capacity of 330 acre-feet. With a satisfactory condition assessment and low hazard potential, the dam has a hydraulic height of 12 feet and a structural height of 14 feet.
Located in Sioux County, Nebraska, the Lower Jordan Dam plays a crucial role in water resource management, providing a normal storage capacity of 138 acre-feet and a surface area of 37 acres. Managed by the state and subject to regular inspections, the dam has a maximum discharge of 3760 cubic feet per second and a drainage area of 2 square miles. Despite being non-federally owned, the dam meets state regulations and enforcement standards, ensuring its continued safe operation for irrigation purposes in the region.
With its stone core and soil foundation, the Lower Jordan Dam is a vital infrastructure for water supply and agriculture in the area. While lacking spillways or locks, the dam's design and construction have proven effective in meeting the water needs of the surrounding community. As climate change impacts water resources, the Lower Jordan Dam stands as a testament to the importance of sustainable water management practices in ensuring a reliable water supply for future generations.
Year Completed |
1941 |
Dam Length |
1400 |
Dam Height |
13 |
River Or Stream |
TR-ANTELOPE CREEK |
Primary Dam Type |
Earth |
Surface Area |
37 |
Hydraulic Height |
12 |
Drainage Area |
2 |
Nid Storage |
330 |
Structural Height |
14 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
14 |
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.
Lower Jordan Dam