Henderson Irrigation Dam Reservoir Report
Nearby: Purviance Dam Flanders Dam
Last Updated: December 13, 2025
Located in Monowi, Nebraska, the Henderson Irrigation Dam stands as a vital structure along the TR-Ponca Creek, serving its primary purpose of irrigation for the region.
°F
°F
mph
Wind
%
Humidity
Summary
Constructed in 2007 by USDA NRCS, this private-owned earth dam boasts a structural height of 41 feet, a length of 530 feet, and a storage capacity of 121 acre-feet. With a fair condition assessment and low hazard potential, the dam provides reliable water resource management for the surrounding area.
Managed by the Nebraska Department of Natural Resources, the Henderson Irrigation Dam is subject to state regulation, inspection, and enforcement, ensuring its operational safety and efficiency. With a drainage area of 2.5 square miles and a maximum discharge of 465 cubic feet per second, the dam plays a crucial role in maintaining water levels and facilitating agricultural activities in Boyd County. Despite its modest size and capacity, the dam remains a key asset in sustaining local water resources and enhancing climate resilience in the region.
Equipped with a spillway type unspecified, the Henderson Irrigation Dam continues to undergo regular inspections, with the last assessment conducted in April 2018. With a designated inspection frequency of 5 years, the dam's emergency action plan and risk management measures remain up-to-date, ensuring timely responses to any potential hazards or emergencies. As a pivotal component of the local water infrastructure, the Henderson Irrigation Dam exemplifies the importance of sustainable water resource management and climate adaptation in agricultural regions like Monowi, Nebraska.
Year Completed |
2007 |
Dam Length |
530 |
Dam Height |
38 |
River Or Stream |
TR-PONCA CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
38 |
Drainage Area |
2.5 |
Nid Storage |
121 |
Structural Height |
41 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
41 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Niobrara River Nr. Verdel
|
517cfs |
Ponca Creek At Verdel
|
23cfs |
Verdigre C Nr Verdigre
|
206cfs |
Bazile Creek Near Niobrara
|
192cfs |
Bazile Creek At Center
|
85cfs |
Elkhorn River At Ewing
|
89cfs |
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.
Henderson Irrigation Dam