Henry Dam 2 Reservoir Report
Nearby: Henry Dam 1 Mader Dam 2
Last Updated: December 6, 2025
Henry Dam 2, located in Sioux County, Nebraska, is a privately owned earth dam primarily used for irrigation purposes.
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Summary
Constructed in 1930 by the USDA NRCS, this structure stands at a height of 13 feet and has a maximum storage capacity of 152 acre-feet. With a normal storage capacity of 56 acre-feet, the dam plays a crucial role in providing water for agricultural activities in the region.
Managed by the Nebraska Department of Natural Resources, Henry Dam 2 has a low hazard potential and is deemed to be in satisfactory condition as of the last inspection in April 2019. The dam spans 860 feet in length and covers a surface area of 14 acres, serving as a vital water resource for the surrounding area. With a drainage area of 3.3 square miles and a maximum discharge of 1891 cubic feet per second, the dam plays a key role in regulating water flow in the TR-Indian Creek watershed.
Despite its age, Henry Dam 2 continues to operate efficiently and effectively, showcasing the importance of proper dam maintenance and oversight. With its strategic location and significant storage capacity, this dam remains a valuable asset for irrigation and water management in the region, highlighting the critical role of infrastructure in sustaining water resources amidst changing climate conditions.
Year Completed |
1930 |
Dam Length |
860 |
Dam Height |
13 |
River Or Stream |
TR-INDIAN CREEK |
Primary Dam Type |
Earth |
Surface Area |
14 |
Hydraulic Height |
13 |
Drainage Area |
3.3 |
Nid Storage |
152 |
Structural Height |
13 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
13 |
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.
Henry Dam 2