Cal. Pub. Res. Code § 6904

Permits and leases for exploration and development of geothermal resources on lands belonging to the state and leases for the development of geothermal resources reserved by the state may be issued by the commission as provided in this article. For purposes of this article, state lands shall be defined as all lands owned by the state, including school lands, lieu lands, proprietary lands, tidelands, submerged lands, swamp and overflowed lands, and beds of navigable rivers and lakes, and lands in which geothermal resources have been reserved to the state.