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Main rivers (Welsh: prif afonydd [1]) are a statutory type of watercourse in England and Wales, usually larger streams and rivers, but also some smaller watercourses.A main river is designated by being marked as such on a main river map, and can include any structure or appliance for controlling or regulating the flow of water in, into or out of a main river.
Critical Ordinary Watercourses (COWs) are a subdivision of ordinary watercourses, certain anti-flooding responsibility for which was assumed by the Environment Agency. They were created following Defra's Flood and Coastal Defence Funding Review published in February 2003. The transfer to EA of approximately 1,800 watercourses has now been ...
Of the 3.5 million miles of rivers in the U.S., 50% are too polluted for fishing, boating or swimming, according to American Rivers. How cities are breathing new life into their urban rivers Skip ...
The Forum of Ministers of Environment of Latin America and the Caribbean, part of UNEP's Regional office in Latin America and the Caribbean International Joint Commission , prevents and resolves disputes about the use and quality of boundary waters on the Canada–US border.
Many of the world's largest cities are located near water sources, and networks of urban "blue infrastructure", such as canals, harbors and so forth, have been constructed to capture the benefits and minimize risks. Globally, cities are facing severe water uncertainties such as floods, droughts, and upstream activities on trans-boundary rivers.
The Environment Agency (EA) is a non-departmental public body, established in 1996 and sponsored by the United Kingdom government's Department for Environment, Food and Rural Affairs, with responsibilities relating to the protection and enhancement of the environment in England (and until 2013 also Wales).
The Chinese municipality of Chongqing, which is the largest city proper in the world by population, comprises a huge administrative area of 82,403 km 2, around the size of Austria. However, more than 70% of its 30-million population are agricultural workers living in a rural setting .
In 2022, the most comprehensive study of pharmaceutical pollution of the world's rivers found that it threatens "environmental and/or human health in more than a quarter of the studied locations". It investigated 1,052 sampling sites along 258 rivers in 104 countries, representing the river pollution of 470 million people.