Sediment yield and sediment load
All of the water that reaches a stream and its tributaries carries sediment eroded from the entire area drained by it. The total amount of erosional debris exported from such a drainage basin is its sediment yield. Sediment yield is generally expressed in two ways: either as a volume or as a weight—i.e., as acre-feet (one-foot depth of material over one acre) or as tons. In order to adjust for the very different sizes of drainage basins, the yield frequently is expressed as a volume or weight per unit area of drainage basin—e.g., as acre-feet ... (100 of 35,658 words)
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Feluccas on the Nile River near Luxor in Upper Egypt.
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Huang He (Yellow River), northern China.
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Kananaskis River, Alberta, Canada.
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The Rio Grande flowing through the desert at the foot of the Chisos Mountains in Big Bend National Park, Texas.
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Aerial view of the Amazon River in Brazil.
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The Three Gorges Dam spanning the Yangtze River (Chang Jiang) near Yichang, Hubei province, China.
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Central Budapest, looking north along the Danube River, with the Parliament Building on the east bank.
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Commodity-carrying laker in the St. Lawrence Seaway at Montreal, Canada.
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Barge on the Rhine River, with vineyards in the background, at the town of Kaub, Germany.
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Hydroelectric power station on the Volkhov River at Volkhov, Russia.
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Faroese fish farm.
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A boy collecting plastic in a polluted river in Jakarta, Indonesia, 2007.
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A river in Sichuan province, China, polluted by a paper mill.
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The 6 October Bridge over the Nile River, Cairo, Egypt, with the central business district in the background.
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A barge traveling down the Mississippi River in Louisiana.
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Sagaing, Myanmar, on the Irrawaddy River.
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Bridge over the Yukon River at Carmacks, Yukon, Canada.
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Angel Falls, Canaima National Park, Venezuela.
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Devil’s Cataract, Victoria Falls, Zimbabwe.
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Niagara Falls.
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Paulo Afonso Falls on the São Francisco River, Alagoas, Brazil.
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The former Guaíra Falls on the Upper Paraná River
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Iguaçu Falls on the Iguaçu River at the Argentina-Brazil border.
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Jog Falls, western Karnataka, India
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Yosemite Falls from Sentinel Meadow, Yosemite National Park, California.
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Horseshoe Falls, Niagara Falls, Ontario, Canada.
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American Falls, Niagara Falls State Park, Niagara Falls, New York.
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Pakistanis taking shelter on higher ground after an Indus River flood, near Thatta, Sindh province, Pakistan, August 2010.
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The Colorado River in Marble Canyon at the northeastern end of Grand Canyon National Park, northwestern Arizona.
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Estuary of the River Erme, Cornwall, Eng.
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Eastern floodplains of the Caprivi Strip, Namibia.
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Formation of a waterfall in Iceland.