Dunlap Dam 1 Reservoir Report
Nearby: Dunlap Dam 2 Barkers Spring Allot 3
Last Updated: December 6, 2025
Dunlap Dam 1, located in Sioux County, Nebraska, is a privately owned structure designed by USDA NRCS for irrigation purposes on the TR-South Antelope Creek.
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Summary
Completed in 1952, this earth dam stands at a height of 18 feet with a hydraulic height of 14 feet. It has a length of 708 feet and a storage capacity of 69 acre-feet, serving the surrounding area with a normal storage of 16 acre-feet.
Despite its low hazard potential, Dunlap Dam 1 is rated as being in poor condition as of the last inspection in 2013. The dam is regulated by the Nebraska Department of Natural Resources and is subject to state permitting, inspection, and enforcement. With a drainage area of 0.4 square miles and a maximum discharge of 450 cubic feet per second, this dam plays a crucial role in maintaining water resources for irrigation in the region. For water resource and climate enthusiasts, Dunlap Dam 1 serves as a key infrastructure supporting agricultural activities in the area, highlighting the importance of proper maintenance and oversight to ensure its continued functionality and safety.
Year Completed |
1952 |
Dam Length |
708 |
Dam Height |
18 |
River Or Stream |
TR-SOUTH ANTELOPE CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
14 |
Drainage Area |
0.4 |
Nid Storage |
69 |
Structural Height |
18 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
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.
Dunlap Dam 1