Monticello City No. 1 is a local government-owned dam located in San Juan, Utah, with a primary purpose of irrigation. Completed in 1975, this earth dam stands at a structural height of 30 feet and has a hydraulic height of 26 feet. The dam has a storage capacity of 135 acre-feet, with a normal storage level of 125 acre-feet, serving as a vital resource for water management in the region. Despite being labeled as low hazard potential, the dam is subject to state regulation, inspection, and enforcement by the Utah Division of Water Rights, ensuring its continued safety and functionality.

Situated near North Creek, Monticello City No. 1 plays a crucial role in the irrigation infrastructure of the area, supporting agricultural activities and water supply reliability. The dam spans 1600 feet in length and is designed to withstand the demands of water management in the region. While the dam's condition assessment is currently labeled as 'Not Rated,' regular inspections every five years help to monitor its performance and identify any necessary maintenance or improvements. With the dam's last inspection conducted in May 2016, efforts are ongoing to ensure its compliance with regulatory standards and emergency preparedness measures.

Managed by the Albuquerque District of the US Army Corps of Engineers, Monticello City No. 1 serves as a key component of the water resource infrastructure in Utah. With a dedicated purpose of irrigation, the dam contributes to the overall water management strategy in the region. Its strategic location and storage capacity make it an essential asset for maintaining water supply stability and supporting agricultural activities in the surrounding area. As climate change continues to impact water resources, the proper regulation and maintenance of dams like Monticello City No. 1 are critical to ensuring sustainable water management practices for future generations.