Lake Mary-Phoebe, located in Brighton, Utah, is a privately owned reservoir regulated by the Utah Division of Water Rights. Built in 1915 for water supply purposes, this gravity dam has a hydraulic height of 69 feet and a structural height of 72 feet, with a storage capacity of 742 acre-feet. The reservoir, fed by a tributary to Big Cottonwood Creek, serves as a critical water source for the area, with a maximum discharge of 262 cubic feet per second.

Despite its importance, Lake Mary-Phoebe poses a high hazard potential with a poor condition assessment. The last inspection in August 2020 revealed the need for significant improvements to ensure its safety and functionality. It is crucial for the owners and regulators to address these issues promptly to mitigate the risks associated with the dam. Additionally, given its age and condition, there is a pressing need for a comprehensive emergency action plan to guide responses in case of any unforeseen events.

As climate change continues to impact water resources, the maintenance and upkeep of infrastructure like Lake Mary-Phoebe are essential to ensure sustainable water supply and mitigate potential risks. With proper management and investment in necessary upgrades, this reservoir can continue to serve the community effectively while safeguarding against potential hazards.