2,436 articles
Kaieteur Falls
Kaieteur Falls, on the Potaro River in Guyana's Kaieteur National Park, drops 226 m (741 ft) in a single plunge with up to 663 m³/s flow, the world's largest single-drop waterfall by volume; discovered in 1870 by Charles Barrington Brown.
Kakabeka Falls
Kakabeka Falls is a 40-meter waterfall on the Kaministiquia River about 29 kilometers west of Thunder Bay, Ontario, the centerpiece of a provincial park established in 1957.
Kalambo Falls
Kalambo Falls is a waterfall and archaeological site in Northern Province, Zambia, near Lake Tanganyika, where excavations since 1953 uncovered the oldest known wooden structure, at least 476,000 years old.
Kalliroe
Kalliroe (Kallirrhoe, Callirrhoe), ancient thermal springs at 'Ain ez-Zara on the Dead Sea's eastern shore in Jordan; famed resort where Herod the Great sought a cure before his death in 4 BCE.
Kalpataru Ridge
Kalpataru Ridge is an elongated undersea ridge in the Indian Ocean near 27°S, 67°E, discovered in 2012 by the Russian vessel Akademik Nikolay Strakhov and named in 2024 by SCUFN on a proposal from India's NCPOR.
Kamantigi Ridge
Kamantigi Ridge, an undersea ridge in the western Pacific (Philippine Sea) at about 14.27°N, 125.20°E, 33 km x 13 km, relief 1,291 m; named after the Kamantigi plant (Impatiens balsamina), proposed by NAMRIA at SCUFN-37.
Kamchatka & Northern Kurils
Kamchatka & Northern Kurils, FEOW freshwater ecoregion 613, covers southern Kamchatka, the Commander Islands, and Kurils north of Bussol Strait; volcanic rivers, salmon runs, lake-endemic Salvelinus chars, no native cypriniforms.
Kamchatka Gulf
Kamchatka Gulf (Камчатский залив), gulf of the Pacific on eastern Kamchatka, Russia; northernmost Pacific-coast gulf, about 148 km long, 74 km wide, up to 2000 m deep at the entrance, near the Kamchatka River mouth.
Kandalaksha Gulf
Kandalaksha Gulf (Кандалакшский залив), also Kandalaksha Bay, is the northwesternmost gulf of Russia's White Sea, 185 km long with depths to 350 m, a Ramsar wetland hosting half the White Sea common eider population, the Kandalakshsky zapovednik, and ports including Kandalaksha and the Vitino oil terminal.
Kandla Port
Kandla Port (Deendayal Port Authority), a major Indian government seaport in Kandla Creek, 90 km inside the Gulf of Kutch, Gujarat; founded after Partition to replace Karachi; handled 150.16 MMT in FY2024-25 and a record 160.11 Mt in FY2025-26, ranking second to Paradip among major ports, with Mundra as its nearby private rival.
Kane Basin
Kane Basin is the wide, shallow central basin of Nares Strait between Ellesmere Island and northwestern Greenland, about 27,000 km² in area, named for explorer Elisha Kent Kane.
Kane Fracture Zone
Kane Fracture Zone, a major Atlantic oceanic fracture zone crossing the Mid-Atlantic Ridge near 24°N; ~2,800 km long, offsets the ridge over 150 km, and carries anomalously thin 2–3 km crust with exposed mantle rocks.
Kankakee River
The Kankakee River is a 130-mile river rising near South Bend, Indiana, and flowing northwest in Illinois to join the Des Plaines River, forming the Illinois River.
Kao Bay
Kao Bay (Kau Bay, Teluk Kao), a 470-m-deep pear-shaped silled marine basin between the northern arms of Halmahera, Indonesia; poorly ventilated, anoxic sediments, El Niño-driven deep-water renewal, glacial freshwater-lake phase, mercury and arsenic in fish.
Kapuas (landform)
Kapuas (Sungai Kapuas), Indonesia's longest river at 1,143 km, flows west across West Kalimantan, Borneo, to the South China Sea; monsoon-driven, undammed, with Kapuas Kecil and Kapuas Besar distributaries and Pontianak at its mouth.
Kara Sea
The Kara Sea is a shallow marginal sea of the Arctic Ocean between Novaya Zemlya and Severnaya Zemlya, receiving about 45% of all river runoff to the Arctic.
Kara Strait
Kara Strait, also called Kara Gates, connects the Kara and Barents Seas at southern Novaya Zemlya, Russia. It is the western gateway of the Northern Sea Route, 45 km wide and up to 119 m deep, with strong internal tides and polar bear migration.
Karimata Strait
Karimata Strait (Selat Karimata): shallow Indonesian strait between Belitung and Borneo linking the South China Sea to the Java Sea; carries the South China Sea throughflow branch (about 0.75 Sv annual mean), monsoon-driven seasonal reversal, diurnal tides, and productive squid fisheries.
Karkheh
Karkheh (رود کرخه), third longest river of Iran, ~755 km, rises in the Zagros and ends in the Hur-al-Azim wetland on the Iraq border; basin of ~50,764 km², Karkheh Dam, declining flows.
Karmanasa River
Karmanasa River (कर्मनाशा नदी, Karamnasa), a 192-km Ganga tributary rising in Bihar's Kaimur hills at 350 m, forming the Bihar–Uttar Pradesh boundary and joining the Ganga near Chausa; name means 'destroyer of religious merit.'
Karrebæk, Dybso and Avno Fjords
Karrebæk, Dybso and Avno Fjords (Karrebæk, Dybsø og Avnø Fjorde) are shallow coastal lagoons and fjords on southwestern Zealand, Denmark, a Ramsar site since 1977, important for wintering waterbirds and breeding gray seals.
Kasai (landform)
Kasai (Cassai), a 2,153 km river of Angola and DR Congo, the chief southern tributary of the Congo River; basin 897,500 km², discharge about 8,246 m³/s, floods January to May, navigable over 1,500 miles.
Kasai (protected area)
Kasai (FEOW ecoregion 546) is a 900,000 km2 freshwater ecoregion following the Kasai River catchment in southwestern DRC and northeast Angola, marked by rapids-driven fish endemism, the Fwa cichlid flock, and high floodplain swamp-forest habitat.
Kasba
Kasba Lake, a 1,341 km² glacial freshwater lake in Canada's Northwest Territories extending into Nunavut, headwater of the Kazan River, named from the Dene word for ptarmigan.
Katchatheevu (கச்சத்தீவு)
Katchatheevu (கச்சத்தீவு) is a small uninhabited island in the Palk Strait, placed under Sri Lankan sovereignty by a 1974 agreement and known for its St Anthony's festival.
Kati Thanda–Lake Eyre
Kati Thanda–Lake Eyre is Australia's largest terminal lake, a 9,700 km² usually dry salt pan 15 m below sea level in South Australia, dual named for the Arabana people in 2013 and filled rarely by monsoon floods.
Kattegat
Kattegat, also Kattegatt, the sea area between Jutland, Zealand, and southern Sweden linking the Baltic to the North Sea; about 30,000 km², mean depth ~23 m, Dutch 'cat hole' name, OSPAR eutrophication problem area.
Kaveri (காவேரி)
Kaveri (காவேரி, Cauvery) is a major South Indian river rising at Talakaveri, Karnataka, flowing to the Bay of Bengal; home of the 2nd-century Kallanai, KRS and Mettur dams, and the Karnataka–Tamil Nadu water-sharing dispute.
Kealakekua Bay
Kealakekua Bay is an inlet on the western coast of the island of Hawaiʻi, known as the site of Captain James Cook's death in 1779.
Keller Inlet
Keller Inlet is an ice-filled inlet between Cape Little and Cape Fiske on the Lassiter Coast, Palmer Land, Antarctic Peninsula, at 74°16'S 61°10'W, named by Finn Ronne after Louis Keller of Beaumont, Texas.