Discusses plans for development of the Northern Region through construction of a diversion dam, canals, laterals, structures, drains, farm ditches, clearing and land levelling. Estimates costs of construction. Provides background information on the geography of the area, principal agricultural activity and planting methods, soil management practices and an evaluation of Me Tang river water quality. Tables of rainfall, run-off, and diversion demands are included. Contains drawings of the preliminary general plan, geological profile, and profile of the main tunnel. [TAIC]