The San Diego Activities Activities San Diego Besides offering plenty of amenities, San Diego Santee Lakes is also a popular recreational area. There are 230 bird species to see and 230 species of sport fish to catch year-round. Visitors can also camp, rent cabins, fish, boat, hike, explore playgrounds, and explore trails. It is also possible to host special events on-site if you want to host a larger event. You'll love picnics,