Jensen Dam 1623 Reservoir Report
Nearby: Crystal Lake Dam 2596 Henricksen Dam
Last Updated: December 13, 2025
Jensen Dam 1623, located in Washington County, Nebraska, is a privately owned structure designed by the USDA NRCS and regulated by the Nebraska Department of Natural Resources.
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Summary
Completed in 1974, this earth dam stands at a height of 51 feet and serves multiple purposes, including flood risk reduction. With a storage capacity of 33 acre-feet and a maximum discharge of 232 cubic feet per second, Jensen Dam 1623 plays a crucial role in managing water resources in the area.
Despite being classified as having a low hazard potential, Jensen Dam 1623 has been assessed as being in poor condition as of May 2016. The dam is inspected every five years, with the last inspection conducted in 2016. While the dam has not undergone any significant modifications since its completion, the associated structures, such as spillways or outlet gates, are not specified in the available data. As climate change continues to impact water resources, the maintenance and monitoring of dams like Jensen Dam 1623 become increasingly important to ensure the safety and sustainability of the surrounding communities and ecosystems.
As part of the Omaha District, Jensen Dam 1623 is situated on TR-LONG CREEK and is managed by a private entity. The dam's location, design, and purpose underscore its significance in water resource management and flood control efforts in the region. With its storage capacity, discharge capabilities, and regulatory oversight, Jensen Dam 1623 stands as a vital infrastructure element in the broader water resource and climate resilience landscape of Nebraska.
Year Completed |
1974 |
Dam Length |
548 |
Dam Height |
51 |
River Or Stream |
TR-LONG CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
49 |
Drainage Area |
0.2 |
Nid Storage |
33 |
Structural Height |
51 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
51 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Papillion Cr
|
38cfs |
Elkhorn River At Waterloo
|
1120cfs |
Boyer River At Logan
|
417cfs |
Missouri River At Omaha
|
17700cfs |
Platte River Nr Leshara
|
5270cfs |
Maple Creek Near Nickerson
|
51cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Wilson Island State Rec Area
|
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Missouri Valley City Park
|
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Glenn Cunningham Lake
|
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Lake Cunningham
|
Jensen Dam 1623
Blair City boat ramp