Hansen Dam 1239 Reservoir Report
Nearby: Nikont Dam Phillips Dam
Last Updated: December 12, 2025
Hansen Dam 1239, located in Alliance, Nebraska, serves as a vital water resource structure along TR-Point of Rocks Creek.
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Summary
Built in 1974 by the USDA NRCS, this private earth dam stands at 24 feet high and stretches 758 feet in length. With a storage capacity of 273 acre-feet and a maximum discharge of 1044 cubic feet per second, the dam plays a crucial role in flood risk reduction and other water management purposes.
Managed by the Nebraska Department of Natural Resources, Hansen Dam 1239 is subject to state regulation, inspection, and enforcement to ensure its structural integrity and safety. Despite its low hazard potential, the dam is regularly monitored and found to be in satisfactory condition during its last assessment in October 2017. The dam's emergency action plan status and risk assessment information are currently not available, highlighting the importance of ongoing monitoring and risk management measures to protect the surrounding area from potential water-related hazards.
As an essential component of the local water infrastructure, Hansen Dam 1239 provides valuable storage and flood protection benefits to the community. With its stone core and soil foundation, the dam's design and construction by the Natural Resources Conservation Service reflect a commitment to sustainable water resource management. Understanding the dam's characteristics and regulatory oversight is crucial for water resource and climate enthusiasts seeking to appreciate the role of such infrastructure in maintaining water security and resilience in the region.
Year Completed |
1974 |
Dam Length |
758 |
Dam Height |
19 |
River Or Stream |
TR-POINT OF ROCKS CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
18 |
Drainage Area |
3.8 |
Nid Storage |
273 |
Structural Height |
24 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
Hansen Dam 1239