Johnson is a privately owned dam located in Sevier, Utah, specifically in the city of Fremont along the Fremont River. Built in 1910 for irrigation purposes, Johnson stands at a hydraulic height of 24 feet and a structural height of 31 feet, with a length of 448 feet. With a storage capacity of 14,770 acre-feet, it serves as a crucial water resource for the surrounding area.

Managed by the Utah Division of Water Rights, Johnson is regulated, permitted, inspected, and enforced by the state to ensure its safety and functionality. Despite being assessed as having a high hazard potential, the dam is currently in fair condition. Its last inspection was conducted in May 2020, with a frequency of one inspection per year. While there are no emergency action plans or inundation maps prepared for Johnson, the dam continues to play a vital role in water management and irrigation in the region.

Situated within the Los Angeles District, Johnson is a significant component of the water infrastructure in Utah. As climate change continues to impact water resources, the maintenance and monitoring of dams like Johnson become even more crucial to ensure the safety of communities and the sustainability of water supplies. With its longstanding history and essential role in irrigation, Johnson remains a focal point for water resource and climate enthusiasts in the region.