Lake Frey, located in Solano County, California, is a vital water supply reservoir managed by the local government. Built in 1894, this earth dam stands at 83 feet in height, with a storage capacity of 638 acre-feet. The dam spans 575 feet in length and holds water from the Wild Horse Creek, serving as a crucial source of water for the city of Greenville.

With a drainage area of 3.06 square miles, Lake Frey plays a significant role in the region's water management, providing essential resources for agricultural, industrial, and domestic use. Despite its age, the dam has been maintained in satisfactory condition, with regular inspections ensuring its safety and functionality. However, due to its high hazard potential, emergency preparedness measures are crucial to mitigate risks and protect downstream communities in the event of a dam failure.

As a key infrastructure for water supply purposes, Lake Frey highlights the intersection of water resources and climate resilience. Its strategic location and historical significance underscore the importance of sustainable water management practices in adapting to changing environmental conditions and ensuring the long-term reliability of water sources in the face of climate variability.