The legislature of the State of Texas manifested an intention to protect the public interest by establishing a centralized and coordinated method for planning and review of drainage and reclamation activity. The legislature demonstrated such an intent by causing levees or other improvements and associated projects to be subject always to the supervision of a central statewide authority. It is the purpose of the commission under Texas Water Code, Chapters 5, 16, and 57, to implement this policy by the promulgation of these sections.