Word: sediment
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Dates: during 2000-2009
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People have been advised to let their water run until it is free of visible sediment before bathing in or drinking...
...Powell. Braving the huge waves and submerged rocks in little wooden boats, they barely survived. These days, most boats are made of sturdy rubber, the guides are experienced oarsmen, and tourists pay for the thrill. The river averages a chilly 5.6?C, and July's rainy season churns up sediment that turns the Colorado chocolate brown. But the water's perils and the sun's searing heat are offset by the Canyon's peaceful aspects: from big-horned sheep scaling cliffs to ancient Pueblan red-clay homes. Intrepid rafters are now making the season's final trips, which...
...Powell. Braving the huge waves and submerged rocks in little wooden boats, they barely survived. These days, most boats are made of sturdy rubber, the guides are experienced oarsmen, and tourists pay for the thrill. The river averages a chilly 5.6?C, and July's rainy season churns up sediment that turns the Colorado chocolate brown. But the water's perils and the sun's searing heat are offset by the Canyon's peaceful aspects: from big-horned sheep scaling cliffs Loh and Behold Avant-garde murals and imaginative furnishings characterise a new Singapore hotel Identity Parade An iconic style...
...could be as large as 5,275 sq km, 50% bigger than Europe's current No. 1, Norway's Hardangervidda. Sigfússon, who's also a geologist, is convinced the dam project is environmentally unsound. Pointing to the planned relocation of a glacial waterfall and the damming of sediment-carrying glacial rivers, he warns that "a huge plateau of silt" will eventually form around the large dam that, together with dust from normal soil erosion, could be blown into storms by the heavy winds that sweep Iceland. These dust storms, in turn, could damage the vegetation that the reindeer...
...loss used to be riprapping--fortifying the banks with chunks of broken concrete or the bodies of junked cars. Rosgen saw that as absurd and destructive. Instead, he studies the geological features of the streambed to determine its ideal "meander geometry"--the way the stream should flow--thus preventing sediment buildup that could block the channel or erode the banks. He then uses natural materials to give the river a kind of eco-makeover. "I try to copy what works in nature," he says...