Keller Reservoir Report

Last Updated: December 5, 2025

Keller is a privately owned irrigation dam located in San Juan, Utah, along Vega Creek.


°F

°F

mph

Wind

%

Humidity

Summary

Built in 1915, this earth dam stands at a height of 18 feet and has a hydraulic height of 14 feet. It serves the primary purpose of irrigation, providing a storage capacity of 230 acre-feet for agricultural use. The dam is regulated by the Utah Division of Water Rights and undergoes regular inspections to ensure its structural integrity.

Despite its age, Keller remains a significant water resource in the region, with a normal storage capacity of 206 acre-feet. The dam has not been rated for its condition, but its hazard potential is considered significant. Its last inspection was conducted in October 2020, with a frequency of inspections every 2 years. While the dam does not have an Emergency Action Plan (EAP) in place, it meets state regulatory requirements for permitting, inspection, and enforcement.

Keller's location in a remote area with no nearby city drainage makes it a crucial water management infrastructure for the surrounding agricultural community. With its historical significance and ongoing operational importance, Keller exemplifies the intersection of water resource management, climate resilience, and regulatory oversight in the state of Utah.

Year Completed

1915

Dam Length

810

River Or Stream

VEGA CREEK

Primary Dam Type

Earth

Hydraulic Height

14

Drainage Area

0.6

Nid Storage

230

Structural Height

18

Hazard Potential

Significant

Nid Height

18
       
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.