Yes, there are indeed Native American Reservations in California. In fact, the state is home to more than 100 federally recognized tribes, each with their own reservations or rancherias. These communities, spread across the state, maintain their own tribal governments and cultural practices. Some of the largest reservations include the Agua Caliente Reservation and the Morongo Reservation. It's a fascinating aspect of California's cultural diversity that I feel more people should know about.