Tomjack Dam Reservoir Report
Last Updated: December 16, 2025
Tomjack Dam, located in Holt, Nebraska, was completed in 1982 by the USDA NRCS and serves multiple purposes including flood risk reduction.
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Summary
This private dam, regulated by the Nebraska Department of Natural Resources, stands at a height of 12 feet and has a storage capacity of 106 acre-feet. Situated on Cache Creek, the dam plays a crucial role in managing water resources in the region, with a drainage area of 21.7 square miles.
Despite its low hazard potential, Tomjack Dam is currently in poor condition, as indicated by the last inspection in April 2020. The structural integrity of the earth dam, built with stone core and soil foundation, poses a potential risk that needs to be addressed. With a history of modifications and ongoing state inspections and enforcement, the dam continues to be a focal point for water resource management in Nebraska.
As climate change impacts water resources, Tomjack Dam stands as a critical infrastructure for mitigating flood risks and ensuring water security in the region. With its strategic location and design, the dam not only provides essential flood protection but also supports sustainable water management practices. As enthusiasts of water resources and climate resilience, it is important to monitor the condition of dams like Tomjack to ensure their effectiveness in the face of changing climate patterns.
Year Completed |
1982 |
Dam Length |
785 |
Dam Height |
12 |
River Or Stream |
CACHE CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
9 |
Drainage Area |
21.7 |
Nid Storage |
106 |
Structural Height |
10 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Elkhorn River At Ewing
|
89cfs |
North Loup River At Taylor
|
487cfs |
Verdigre C Nr Verdigre
|
206cfs |
Niobrara River Nr. Verdel
|
517cfs |
Bazile Creek At Center
|
85cfs |
Ponca Creek At Verdel
|
23cfs |
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.
Tomjack Dam