2,436 articles
Tso Kar Wetland Complex
Tso Kar Wetland Complex, Ramsar Site no. 2443 in Ladakh's Changthang region, pairs freshwater Startsapuk Tso with hypersaline Tso Kar at over 4,500 m; a black-necked crane and saker falcon breeding site.
Tsomoriri
Tsomoriri (Tso Moriri), a fresh-to-brackish lake at 4,595 m in Ladakh's Changthang Plateau; Ramsar site since 2002, Black-necked Crane breeding ground, largest Trans-Himalayan lake wholly in India.
Tsugaru Strait
Tsugaru Strait (津軽海峡), strait between Honshu and Hokkaido connecting the Sea of Japan and Pacific; carries the Tsugaru Warm Current (~1.5 Sv) and the 53.85 km Seikan Tunnel.
Tugela Falls
Tugela Falls, South African tiered waterfall on the Tugela River in the Drakensberg's Amphitheatre, KwaZulu-Natal; 948 m over five tiers, tallest drop 411 m; Africa's highest and rival to Angel Falls for world's tallest by total height.
Tulare Lake
Tulare Lake, called Pa'ashi by the Yokuts, was the largest freshwater lake west of the Mississippi River in California's San Joaquin Valley, drained by the 1920s for agriculture; it reemerges in wet years such as 2023, and its groundwater subbasin entered SGMA probation in 2024.
Tungabhadra River (ತುಂಗಭದ್ರಾ ನದಿ)
Tungabhadra River (ತುಂಗಭದ್ರಾ ನದಿ), also called the Tunga-Bhadra, is a 531 km Krishna tributary formed at Koodli, Karnataka, flowing past Hampi and impounded by the Tungabhadra Dam near Hospet.
Tuo
Tuo (沱) names several Chinese rivers: the Tuojiang, a ~638 km upper-Yangtze tributary in Sichuan; a 112 km Huaihe tributary in Anhui; and the Tuotuo River, a Yangtze source-region river on the Qinghai-Tibet Plateau.
Tura
Tura (Тура) names a 1,030 km Siberian tributary of the Tobol supplying Tyumen, the largest Garo Hills town in Meghalaya, India, a Paleogene geological formation, and a 101 km Ingoda tributary.
Turia (river)
Turia (Túria), river of eastern Spain rising in Valencia and Cuenca provinces and flowing to the Mediterranean at Valencia; diverted south of the city by the Plan Sur after the deadly 1957 flood, leaving the old bed as the Turia Gardens park.
Turkish straits crisis
Turkish straits crisis: 1945–1946 Soviet-Turkish confrontation over the Montreux Convention, Soviet bases on the Bosporus and Dardanelles, and Kars-Ardahan territory; Turkey refused, the US backed it, leading toward NATO membership in 1952.
Turnagain Arm
Turnagain Arm is a 48-mile hypertidal estuary of Cook Inlet southwest of Anchorage, Alaska, named by Captain Cook in 1778, with a 9 m tidal range, a daily tidal bore, and tidal flats studied for earthquake-like sediment deformation.
Tuz
Tuz (Tuz Gölü, Salt Lake), Turkey's second-largest lake, a shallow hypersaline endorheic lake in Central Anatolia's Konya basin; 32.4% salt, 70% of Turkey's salt, major flamingo colony, SEPA since 2000, UNESCO tentative list, drying since 2000.
Tuzla Island
Tuzla Island is a narrow sandy island in the middle of the Kerch Strait between Crimea and the Taman Peninsula, focus of a 2003 Ukraine–Russia crisis and later the Kerch Bridge.
Tuzly Lagoons (Тузлові лимани)
Tuzly Lagoons (Тузлові лимани), Shagany-Alibei-Burnas system, are brackish Black Sea limans in Odesa Oblast, Ukraine; a Ramsar site and, since 2010, a 27,865 ha national nature park.
Typha
Typha (cattail) is a cosmopolitan wetland plant genus of rhizomatous perennials with brown flower spikes. Key species include T. latifolia, T. angustifolia, and the invasive hybrid T. × glauca.
Typha latifolia
Typha latifolia, broadleaf or common cattail, is a cosmopolitan emergent wetland plant of Typhaceae with male and female flower spikes touching; it hybridizes with T. angustifolia to form invasive T. × glauca and is used in wastewater treatment.
Tyrrhenian Basin
Tyrrhenian Basin: the young back-arc basin of the Mediterranean between Italy, Corsica-Sardinia, and Sicily, formed by Ionian slab rollback since about 10 Ma, with Vavilov and Marsili oceanic sub-basins reaching 3,600 m depth.
Tyrrhenian Sea
Tyrrhenian Sea (Mare Tirreno, Mare Tyrrhenum): arm of the Mediterranean between Italy, Corsica, Sardinia, and Sicily; deepest western Mediterranean basin (~3,900 m), a young back-arc basin opened by slab rollback since ~10 Ma, with Vavilov and Marsili oceanic sub-basins, Aeolian volcanism, and major ports at Naples and Civitavecchia.
Tyung
Tyung (Тюнг, Түҥ) is a 1,092 km left tributary of the Vilyuy River in Yakutia, Russia, draining 49,800 km² into the Lena basin, with 180 m³/s mean discharge and Cretaceous fossil outcrops.
Ucayali River
Ucayali River (Río Ucayali), Peruvian white-water Amazon tributary formed at Atalaya by the Apurímac and Urubamba; about 1,460 km long, joins the Marañón above Iquitos to form the Amazon, discharging 12,000 m³/s.
Uchiura Bay
Uchiura Bay (内浦湾), also Funka Bay or Volcano Bay, is a roughly circular bay about 50 km across on Hokkaido's Oshima Peninsula, named in 1796 by Captain Broughton; fisheries, scallop aquaculture, and volcanic hazards define it.
Uchur
Uchur (Учур), Evenki for "whirlwind", is an 812 km right tributary of the Aldan River in Khabarovsk Krai and Yakutia, Russia, draining 113,000 km² with a mean discharge of 1345 m³/s, navigable on its lower 159 km.
Uda Gulf
Uda Gulf (Удская губа, Udskaya Bay), a bay in the western Sea of Okhotsk, Khabarovsk Krai, Russia; about 100 km long, 36 m deep, macrotidal (tides to 9.7 m), receiving the Uda River, ice-bound October to June, with Shantar Islands at its entrance.
Uddjaure
Uddjaure (Uddjaur), large regulated lake in Arjeplog, Lapland, Sweden, in the Skellefteälven system; about 250 km², 420 m elevation, max depth 25 m; with Storavan a key hydropower reservoir.
Uele (landform)
Uele (Uellé, Uélé), river in northeastern Democratic Republic of the Congo, rising near the Uganda border at about 1,620 m and flowing about 1,100–1,210 km west to join the Bomu at Yakoma and form the Ubangi River.
UL Bend Wetland Management District
UL Bend Wetland Management District is the name given to the wetland management district serving UL Bend National Wildlife Refuge, a 56,090-acre refuge on the Missouri River in central Montana.
Ullswater
Ullswater, Cumbrian lake in England's Lake District National Park; second largest after Windermere at 8.9 km2, 14.5 km long, dog-leg shaped, up to 62.5 m deep, drained by the River Eamont, served by Ullswater Steamers.
Ulvedybet and Nibe Bredning
Ulvedybet and Nibe Bredning, Ramsar site 146 in Denmark's Limfjord (Nordjylland, 18,575 ha, designated 1977), a shallow fjord and dammed brackish lagoon of international importance for Whooper Swan, Bewick's Swan, and Light-bellied Brent Goose.
Upemba
Upemba (Lac Upemba) refers to a shallow 530 km2 lake, the Kamalondo Depression, and a 1939 national park in southeastern DR Congo, a Ramsar wetland and fish biodiversity hotspot.
Upernavik Archipelago straits and bays
The straits and bays of the Upernavik Archipelago are the channels and inlets separating thousands of islands in northwest Greenland, centered on the deep Upernavik Isfjord.