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… outflow of permanent or perched groundwater and from the drainage of lakes and swamps during dry weather; also … (watershed): a discrete area of land with a common drainage system; includes both the water bodies that convey … the principle that each state within an international drainage basin has the right to a reasonable and equitable …

… solutions to these challenges include expanding the water drainage infrastructure to capture polluted runoff and divert … to these challenges, including expansion of water drainage infrastructure, can in some instances further … to the channel, rivers become more effective conduits for drainage. It can also maximize the use of surrounding lands, …

… water as well as comparable numbers concerned with land drainage, river improvement and inland navigation. In other … trend for water management to be undertaken on a drainage basin approach. South Africa with its statutory … Best known historically for operating irrigation and drainage systems, recent years have seen a significant …