This revised second edition is essential to everyone involved with water and water resources-complying with the myriad federal, state, and local laws and regulations that govern the use and management of water in our attempts to maintain, clean, usable water. It includes the law of water diversion and distribution; water resources development and protection; water treatment and land use; ocean dumping; oil and hazardous substances cleanup; riparian and non-riparian systems; Eastern permit systems; beneficial use; water codes; prior appropriation; surface and ground water; channel modifications; municipal water supply; irrigation; California Water Management Districts; Bureau of Reclamation; Corps of Engineers; Water Resources Development Act of 1986; SCS, TVA, BPA, NEA, CERCLA, CWA, SDWA, RCRA, and their substantial changes in the last four years; water resources planning and research; public use; ownership of beds and banks; wild and scenic rivers; river corridor and instream flow protection; flood insurance, Section 404 and Section 208; the Supreme Court and water conservation; heat dischargers; quality-based effluent limitations; state ground water programs; pretreatment; funding; enforcement; citizen suits; and many more vital topics.INTRODUCTION: WATER LAW IN CONTEXT. THE LAW OF WATER DIVERSION AND DISTRIBUTION. Legal Classification of Water. Water Diversion Doctrines: The Riparian System (and Non-Riparian Uses). Eastern Permit Systems and their Evaluation. Appropriationism and Ripartianism. Groundwater Doctrines and Problems. Federal and Federal-State Diversion Law. Interbasin and Interstate Transfers. Drainage Law. Water Distribution Organizations. WATER RESOURCES DEVELOPMENT AND PROTECTION. The Federal Government as Project Developer: Water Resources Development Act of 1986, SCS, TVA, BPA. The Federal Government as Project Licensor. Comprehensive Water Resource Planning and Research. Limitations ofAL Federal Development and Licensing. NONTRANSFORMATIONAL USEl5