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