Río Otún vs Zhuhai

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The Otún River (Río Otún) is a river in the Risaralda department of Colombia. Its source is Lake Otún, fed by meltwater from Nevado Santa Isabel, and its outlet is the Cauca River. The Otún River passes between the cities of Pereira and Dosquebradas, and is crossed at that point by the César Gaviria Trujillo Viaduct, one of the largest cable-stayed bridges in South America. The Otún River is the only source of drinking water for Pereira and Dosquebradas.

The local water company takes about 1.8 cubic metres per second (64 cu ft/s) from the river at a site known as Nuevo Libaré. Agricultural development in that region has affected the quality of the water from the river, with pig and chicken farms as well as human waste water being major sources of bacteriological contamination.[1]The river passes through several protected zones including the Otún Quimbaya Flora and Fauna Sanctuary.

Source: Wikipedia

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Zhuhai (, Chinese: 珠海; pinyin: Zhūhǎi; Yale: Jyūhói) is a prefecture-level city located on the west bank of Pearl River estuary on the central coast of southern Guangdong province, People's Republic of China, on the southeastern edge of Pearl River Delta. Its name literally means "pearl sea", which originates from the city's location at the mouth of the Pearl River meeting the South China Sea. Zhuhai borders Jiangmen to the west, Zhongshan to the north and Macau to the southeast, and shares maritime boundaries with Shenzhen and Hong Kong to the northeast across the estuary. Zhuhai was one of the original four Special Economic Zones established in 1980, as well as one of China's premier tourist destinations, being called the Chinese Riviera.

While the city is located in the traditionally Cantonese-speaking region of Guangdong, a significant portion of the population is now made up of Mandarin-speaking economic migrants originally from inland provinces. The core of Zhuhai, in the northeastern portion of the administrative division, is part of the Guangdong-Hong Kong-Macau Greater Bay Area, the biggest built-up area in the world with more than 44,478,513 inhabitants at the 2010 census, encompassing Shenzhen, Dongguan, Foshan, Zhongshan, Macau, Hong Kong, the main part of Guangzhou, and small parts of Jiangmen and Huizhou cities. According to a report released in 2014 by the Chinese Academy of Social Sciences, Zhuhai is the most livable city in China.

Source: Wikipedia