Described are 4501 projects in progress during 1968 under the general headings: Nature of Water; Water Cycle; Water Supply Augmentation and Conservation; Water Quality Management and Control; Water Quality Management and Protection; Water Resources Planning; Resource Data; Engineering Works; and Manpower, Grants and Facilities. Each description outlines the objectives of the project and the procedures being used. The name of the principal investigator and the address of the institution are given, and supporting agencies are identified. There is a subject index, a principal investigator index, a contractor index, and a supporting agency index. (EB)