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Ringbolt Rapids
Ringbolt Rapids are a series of rapids in the upper Black Canyon of the Colorado, 12 miles above the Roaring Rapids (Colorado River), Roaring Rapids in the Colorado River between Arizona and Nevada. History The Ringbolt Rapids were one of two of the significant hazards to navigation to Steamboats of the Colorado River, steamboats, barges, and other shipping when ascending or descending the Colorado River between El Dorado Canyon and Callville, Nevada, Callville, in the 19th century. Ringbolt Rapids gets its name from the ring bolt driven into the canyon wall there in 1866, to allow the pioneering steamboat Esmerelda (sternwheeler), ''Esmerelda'' to affix a line to it and draw itself up through the rapids by means of its Capstan (nautical), capstan, to complete its voyage to Callville. References External links Murl [sic] Emory and the ring bolt in Black Canyon. from The Otis Marston Colorado River Collection, Huntington Digital Library; hdl.huntington.org accessed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. Rapids are characterized by the river becoming shallower with some rocks exposed above the flow surface. As flowing water splashes over and around the rocks, air bubbles become mixed in with it and portions of the surface acquire a white color, forming what is called "whitewater". Rapids occur where the bed material is highly resistant to the erosive power of the stream in comparison with the bed downstream of the rapids. Very young streams flowing across solid rock may be rapids for much of their length. Rapids cause water aeration of the stream or river, resulting in better water quality. Rapids are categorized in classes, generally running from I to VI. A Class 5 rapid may be categorized as Class 5.1-5.9. While Class I rapids are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |