Atascadero Park, also known as Atascadero Lake, is a picturesque water resource nestled in the heart of Atascadero, California. Managed by the local government, this park serves as both a recreational oasis and a vital water supply for the community. The park features an earth dam with a height of 18 feet and a length of 500 feet, completed in 1918, that helps to store 250 acre-feet of water from Tr Atascadero Creek.

With a surface area of 30 acres and a drainage area of 0.9 square miles, Atascadero Park provides a tranquil setting for outdoor activities while also ensuring a reliable water supply for the region. The dam, regulated by the California Department of Water Resources, has a high hazard potential but is currently in satisfactory condition, as assessed in 2017. The park's location, surrounded by the natural beauty of San Luis Obispo County, makes it a popular destination for both water resource enthusiasts and climate advocates alike.