Chester No. 1 is a privately owned dam located in Sanpete, Utah, that was completed in 1883 for irrigation purposes. This earth dam stands at a structural height of 12 feet and has a hydraulic height of 5 feet, with a storage capacity of 56 acre-feet. The dam is regulated by the Utah Division of Water Rights and is subject to state permitting, inspection, and enforcement.

The dam is situated on Canal and Oak Creeks, draining to the San River, with a drainage area of 69.1 square miles. Despite its age, Chester No. 1 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. The last inspection of the dam took place in May 2017, with a recommended inspection frequency of every five years to ensure its continued safety and functionality.

Overall, Chester No. 1 serves as a vital resource for irrigation in the region, highlighting the importance of proper maintenance and monitoring of aging infrastructure to ensure the safety and sustainability of water resources in the face of changing climate conditions. As water resource and climate enthusiasts, it is crucial to advocate for the continued regulation and maintenance of dams like Chester No. 1 to protect our water supply for future generations.