2,436 articles
Chambal River
The Chambal River is a major tributary of the Yamuna in India, rising in the Vindhya range and flowing through Madhya Pradesh, Rajasthan, and Uttar Pradesh.
Champ (folklore)
Champ (Champy) is the legendary lake monster of Lake Champlain, New York–Vermont, rooted in Abenaki horned-serpent tales, 19th-century sightings, the disputed 1609 Champlain story, and the 1977 Mansi photograph.
Champlain Sea
Champlain Sea (mer de Champlain): cold, brackish postglacial arm of the Atlantic flooding the St. Lawrence Lowlands and Ottawa Valley about 14,000–10,500 cal yr BP, source of sensitive Leda clay, distinct from the Goldthwait Sea east of Quebec City.
Channels of the Hawaiian Islands
Channels of the Hawaiian Islands (Nā Kai ʻEwalu, the eight seas): named passages between the main islands, from Kaulakahi to ʻAlenuihāhā, with Hawaiian names, meanings, oceanography, cultural role, and modern crossings.
Chany
Lake Chany (озеро Чаны), largest endorheic lake in Siberia, a shallow saline lake on the Baraba Lowland, Russia; about 2010 km², 2.2 m mean depth, formed only 3.6 ka BP, fed by Kargat and Chulym rivers.
Chao
Chao (巢湖, Chaohu Lake), fifth largest freshwater lake in China, a shallow 834 km² eutrophic lake in central Anhui near Hefei; dammed from the Yangtze in 1962, eutrophic since the late 1970s, improving under protected-area and water-diversion management.
Chao Phraya freshwater swamp forests
Chao Phraya freshwater swamp forests: a tropical moist broadleaf ecoregion (WWF ID 224) in central Thailand's Chao Phraya lowlands, about 38,858 km², now almost entirely converted to rice paddies and Bangkok, with relict swamp habitat in Khao Sam Roi Yot National Park.
Chao Phraya River
Chao Phraya River (แม่น้ำเจ้าพระยา), Thailand's principal river, drains a 158,587 km² basin formed by the Ping and Nan rivers, flows through Bangkok's delta to the Gulf of Thailand, and faces heavy metal, BPA, and flood pressures.
Chapala
Lago de Chapala (Lake Chapala), Mexico's largest lake, in Jalisco and Michoacán; Ramsar site since 2009, capacity 7,897 Mm³, main water source for Guadalajara, fed by the Lerma River.
Chara
Chara (Чара) is an 851 km left tributary of the Olekma in Eastern Siberia, and the name of the village Chara, the BAM town Novaya Chara, the Chara Sands dunes, and the gemstone charoite.
Charcot Bay
Charcot Bay is a bay between Cape Kater and Cape Kjellman on the Davis Coast of Graham Land, Antarctica, charted in 1902 by Nordenskjöld's Swedish expedition and named for French explorer Jean-Baptiste Charcot; a second, smaller Charcot Bay lies in Victoria Land.
Charles M. Russell Wetland Management District
The Charles M. Russell Wetland Management District is a U.S. Fish and Wildlife Service unit managing over 30,000 acres of wetland and grassland habitat across central and south-central Montana.
Charles River
The Charles River is an 80-mile Massachusetts river flowing from Hopkinton to Boston Harbor through a 310-square-mile watershed. Known for its 1910 dam, the Clean Charles River cleanup, and the Head of the Charles Regatta.
Charlie-Gibbs Fracture Zone
The Charlie-Gibbs Fracture Zone is a major fracture zone in the North Atlantic Ocean that offsets the Mid-Atlantic Ridge by roughly 350 km along two parallel transform faults.
Charlotte Bay
Charlotte Bay is a bay on the Danco Coast of Graham Land, Antarctic Peninsula, charted by the Belgian Antarctic Expedition in 1898 and named for Georges Lecointe's fiancée.
Chase Lake Wetland Management District
Chase Lake Wetland Management District is a U.S. Fish and Wildlife Service unit in Stutsman and Wells counties, North Dakota, part of the Arrowwood Refuge Complex, protecting Prairie Pothole wetlands and grasslands via 136 waterfowl production areas and over 95,000 easement acres.
Chatham Rise
The Chatham Rise is a submarine plateau extending about 1,000 km east from New Zealand's South Island, part of Zealandia, whose only land above water is the Chatham Islands.
Chattahoochee River
Chattahoochee River: Georgia river rising in the Blue Ridge Mountains, joining the Flint to form the Apalachicola; supplies 70% of metro Atlanta's drinking water and is the focus of the Georgia-Alabama-Florida water dispute.
Chaunskaya Bay
Chaunskaya Bay (Chaun Bay, Чаунская губа), Arctic bay in the East Siberian Sea, Chukotka, Russia; 140 km long, shallow, near Pevek; hosts a warm-water 'Arctic oasis' ecosystem sustained by hydrothermal submarine groundwater discharge.
Checkered keelback
Checkered keelback (Fowlea piscator, formerly Xenochrophis piscator), also called Asiatic water snake: a common semi-aquatic South and Southeast Asian natricine snake with keeled scales, a checkered spot pattern, frog-and-fish diet, and disputed mild venom status.
Chenab River (چناب)
Chenab River (چناب), Greek Acesines, a major Punjab river of the Indus system formed by the Chandra and Bhaga confluence; a Western River allocated to Pakistan under the 1960 Indus Waters Treaty, now affected by India's 2025 abeyance and Hague arbitration.
Chesapeake Bay
Chesapeake Bay: largest estuary in the United States, a drowned river valley formed about 18,000 years ago; 64,000-square-mile watershed across six states and DC, over 17 million residents, summer dead zones, and a decades-long EPA-coordinated restoration effort.
Chew Bahir
Chew Bahir ('Salt Sea', Lake Stefanie) is a saline terminal playa lake in the southern Ethiopian Rift, about 70 by 30 km. It was a 2,000 km2 freshwater lake during the African Humid Period and holds a 620,000-year sediment core used to study human evolution.
Chi
Chi (แม่น้ำชี), river in northeast Thailand, largest tributary of the Mun River, which it joins in Si Sa Ket; 49,476 km² basin, rice-farming floodplain, right-bank Mekong tributary system.
Chiapas - Fonseca
Chiapas - Fonseca, ecoregion 201 in the Freshwater Ecoregions of the World scheme, covers Pacific coastal rivers and lakes from Oaxaca, Mexico, to southern Honduras.
Chicago River
The Chicago River is an Illinois river reversed in 1900 via the 28-mile Sanitary and Ship Canal so it flows away from Lake Michigan toward the Mississippi system, with branches, TARP reservoirs, and recovering water quality.
Chico Hot Springs
Chico Hot Springs is a historic resort in Pray, Montana, Paradise Valley, founded 1900 as the Chico Warm Springs Hotel, with two geothermal pools (96°F and 103°F), a day spa, dining, and National Register listing.
Chile Ridge
Chile Ridge (Chile Rise), the Nazca–Antarctic spreading center in the southeast Pacific, subducts beneath South America at the Chile Triple Junction near 46°S, migrating northward over 14 million years.
Chilika Lake (ଚିଲିକା ହ୍ରଦ)
Chilika Lake (ଚିଲିକା ହ୍ରଦ), Asia's largest brackish water lagoon, lies on Odisha's coast in India. India's first Ramsar site (1981), it was restored by a new sea mouth opened in 2000, reviving fisheries and migratory bird habitat.
Chin Hills - Arakan Coast
Chin Hills - Arakan Coast is a freshwater ecoregion (FEOW 719) covering lower Brahmaputra headwaters and coastal basins draining to the Bay of Bengal in India, Bangladesh, and Myanmar.