Located in Brea, California, the 30 Mg Central Reservoir stands as a crucial water resource for the region. Built in 1924, this earth dam reaches a height of 30 feet and has a hydraulic height of 26.25 feet, providing a storage capacity of 92 acre-feet. Managed by the local government, this reservoir is primarily used for water supply purposes and is regulated by the Department of Water Resources, Safety of Dams.

With a surface area of 5 acres and a length of 1596 feet, the 30 Mg Central Reservoir plays a vital role in water management in Orange County. Despite its high hazard potential, it has been assessed to be in satisfactory condition as of September 2017. Regular inspections are conducted to ensure its safety, with the most recent inspection dating back to December 2019.

Enthusiasts of water resources and climate will appreciate the significance of the 30 Mg Central Reservoir in supporting the local community's water supply needs. As a key infrastructure in the region, this earth dam serves as a critical component in water management and highlights the importance of sustainable water resource practices in the face of climate change challenges.