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The Public Health Act 1875 (38 & 39 Vict. c. 55) further mandated that all new houses have running water and internal drainage. By 1944, there were over 1000 water suppliers in England and Wales, though 26 supplied half of the total volume, and 97 supplied an additional further quarter of total volume. [5]
Note that, in the UK, the terms "river basin" and "catchment" are used officially and far more frequently than the US term "drainage basin". See the lists of rivers of England , Scotland , Wales and Northern Ireland .
Ordinary watercourses include every river, stream, ditch, drain, cut, dyke, sluice, sewer (other than a public sewer) and passage through which water flows and which does not form part of a main river.
View of Cock up Bridge, Burwell Lode and Swaffham Internal Drainage Board channel, Wicken Fen, Cambridgeshire An internal drainage board (IDB) is a type of operating authority which is established in areas of special drainage need in England and Wales with permissive powers to undertake work to secure clean water drainage and water level management within drainage districts.
Drainage in the Fenland consists of both river drainage and internal drainage of the land between the rivers. The internal drainage was organised by levels or districts, each of which includes the fen parts of one or several parishes. The details of the organisation vary with the history of their development, but the areas generally include:
Map of the London sewerage system from 1882. The London sewer system is part of the water infrastructure serving London, England. The modern system was developed during the late 19th century, and as London has grown the system has been expanded. It is currently owned and operated by Thames Water and serves almost all of Greater London.
Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin.It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.
The list of drainage basins by area identifies basins (also known as "catchments" or, in North American usage, "watersheds"), sorted by area, which drain to oceans, mediterranean seas, rivers, lakes and other water bodies.