Wellsville Reservoir Report

Last Updated: December 5, 2025

Wellsville, located in Cache County, Utah, is home to a significant irrigation dam known as the Wellsville Dam.


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Summary

Constructed in 1957, this earth dam stands at a structural height of 25 feet and has a hydraulic height of 24 feet, providing essential water storage for agricultural purposes in the region. The dam has a storage capacity of 50 acre-feet and is situated on the East Spring Stream, serving as a vital resource for the surrounding community.

Managed by the Utah Division of Water Rights, the Wellsville Dam is regulated, inspected, and enforced to ensure its safety and functionality. Although the condition assessment is currently marked as "Not Rated," the dam's hazard potential is classified as significant, highlighting the importance of ongoing monitoring and maintenance. With a regular inspection frequency of every two years, the dam plays a crucial role in water resource management and supports sustainable irrigation practices in the area.

Despite the lack of specific details on spillways, drainage areas, or risk assessments, the Wellsville Dam remains a key infrastructure for water storage and distribution in Cache County. As climate change continues to impact water resources, the efficient operation and maintenance of dams like Wellsville are essential in ensuring the resilience of agricultural systems and the availability of water for future generations.

Year Completed

1957

Dam Length

280

River Or Stream

EAST SPRING STREAM

Primary Dam Type

Earth

Hydraulic Height

24

Drainage Area

0.6

Nid Storage

50

Structural Height

25

Hazard Potential

Significant

Nid Height

25
       
Seasonal Comparison

Weather Forecast

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.