California Code, Public Resources Code - PRC § 8016

To enable the coordination of the programs of the several map-making agencies, the department shall cause data to be assembled covering the various types of maps produced or being produced by federal, state or other agencies, their uses and estimated cost of production, the mapping facilities of all departments engaged in the preparation of maps and any duplication of mapping by state departments. All state agencies making and using maps shall cooperate in furnishing the necessary information covering all mapping procedure. These assembled data may be used by the department for all state mapping or map-making.