Theresa Vap Dam Reservoir Report

Last Updated: December 5, 2025

Theresa Vap Dam, located in Clay County, Nebraska, was completed in 1984 and is primarily used for irrigation purposes.


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Summary

Managed by a private owner, the dam stands at a height of 15 feet with a hydraulic height of 14 feet and a structural height of 18 feet. With a storage capacity of 67 acre-feet, the dam serves to regulate water flow from the TR-Liberty Creek, covering a drainage area of 0.5 square miles.

Designed by the USDA NRCS, Theresa Vap Dam is constructed of earth and stone materials on a soil foundation. It spans 300 feet in length and has a surface area of 5 acres, with a maximum discharge capacity of 140 cubic feet per second. The dam is regulated by the Nebraska Department of Natural Resources and undergoes regular state inspections and enforcement to ensure its integrity and safety. Despite being classified as having a low hazard potential, the dam's condition assessment in 2018 was rated as fair.

The dam's location in Deweese, Nebraska, contributes to the local irrigation efforts and water resource management in the region. With a focus on sustainable water usage and environmental conservation, Theresa Vap Dam plays a crucial role in supporting agricultural activities and maintaining water quality in the area. Enthusiasts of water resources and climate management can appreciate the dam's design, function, and importance in the broader context of sustainable water management practices.

Year Completed

1984

Dam Length

300

Dam Height

15

River Or Stream

TR-LIBERTY CREEK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

14

Drainage Area

0.5

Nid Storage

67

Structural Height

18

Hazard Potential

Low

Foundations

Soil

Nid Height

18
       
Seasonal Comparison

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Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.