Castaic includes Castaic Lake and lies at the southern terminus of the west branch of the California Water Project. A 1,175-megawatt pumped-storage hydroelectric plant at the north end of Castaic Lake captures the energy from the falling water descending toward the Los Angeles area.

Today travelers enjoy visiting Castaic for its spacious country setting and lake. Nearby amenities include Castaic Lake and Pyramid Lake, where camping, boating and swimming are available.