|
|
Columbia River[[Image:Columbia River Gorge.jpg|thumb|right|300px|Columbia River Gorge, Washington or North side]] The Columbia River is the largest river in volume flowing into the Pacific Ocean from North America. ==Geography== The Colombia's headwaters are located in the Canadian Rockies of British Columbia. The river then flows through the east-central portion of Washington State. The last 300 miles (480 km) of the Colombia form the Washington-Oregon boundary. The river goes into the Pacific Ocean at Ilwaco, Washington and Astoria, Oregon. For its first 200 miles the Columbia flows North and then bends to the South crossing the international border from Canada and into the United States where the river meets the Clark Fork. The Clark Fork River begins near Butte, Montana and flows through western Montana before entering Pend Oreille Lake. Water draining from the lake forms the Pend Oreille River, which flows across the Idaho panhandle to Washington's northeastern corner where it meets the northern Canadian fork. The river then runs South-Southwest through the Columbia Plateau, changing to a southeasterly direction near the Columbia Basin where the magnificent Gorge at George is located. The Gorge Amphitheater, which looks out over the gorge, is a spectacular 40,000 person concert venue. The river continues Southeast until it passes the Hanford Nuclear Reservation just before it reaches the Snake River. The Columbia then makes a sharp bend to the west were it begins to form the Washington-Oregon border. Along this section the river cuts through the Cascade Mountains at the Columbia River Gorge. It was here in Hood River County, Oregon that windsurfing was originated. Constant winds of 15 to 35 mph blow through this wide straight gorge. The Columbia River is the largest river in the world that has no River_delta. The river continues west with one small north-northwesterly directed stretch near Portland, Oregon, Vancouver, Washington and the confluence with the Willamette River. On this sharp bend the river's flow slows considerably and it drops the sediment that would normally form a delta. ==History== On May 11, 1792, Captain Robert Gray became the first white man to see the Columbia River. Gray traveled to the Pacific Northwest to trade for fur in a privately-owned vessel named ''Columbia''. He named the river after the ship. Gray's discovery of the Columbia established a stronger belief that Americans had more of a "right" to the Oregon Country, which was also claimed by Russians, British, Spanish, and other nations. Lewis and Clark Expedition's overland expedition explored the vast, unmapped lands west of the Missouri River. On the last stretch of their expedition they traveled down the Columbia River to the Pacific Ocean. The expedition led the way in settling the west. In 1825 on behalf of the Hudson's Bay Company Dr. John McLoughlin established Fort Vancouver (currently Vancouver, Washington) on the banks of the Columbia to headquarter fur trading in the region. The fort was by far the largest western settlement of its time. Every year ships would come from London (via the Pacific) to drop off supplies and trade goods in exchange for the furs. For many settlers the fort became the last stop on the Oregon Trail to buy supplies and land before starting their homestead. Because of its access to the Columbia river Fort Vancouver's influence reached from Alaska to California and from the Rocky Mountains to the Hawaiian Islands. ==Hydroelectric Dams== :''Roll on, Columbia, roll on, roll on, Columbia, roll on'' :''Your power is turning our darkness to dawn'' :''Roll on, Columbia, roll on.'' –Woody Guthrie Nearly half of all hydroelectricity in the United States comes from the Columbia and its tributaries. The largest of the 150 hydroelectric projects, the Grand Coulee Dam and the Chief Joseph Dam, are also the largest in the United States. The Grand Coulee Dam is the third largest hydroelectric dam the world. The dams also provide a secondary benefit in flood control and irrigation. On its north-south stretch through Eastern Washington, the Columbia spans a large desert created by the Cascade Mountains' rain shadow. The dams provide water for the Columbia Basin Project, one of the most extensive irrigation projects in the western United States. The project provides water to over 500,000 acres (2,000 km²) of fertile but arid lands in central Washington State. Water from the project has transformed the region from a wasteland barely able to produce subsistence levels of dry-land wheat crops to a major agricultural center. Important crops include Apple (fruit)s, potatoes, alfalfa, wheat, maize (maize), barley, hops, beans, and sugar beets. Although the dams provide clear, renewable electricity they do drastically alter the landscape and ecosystem of the river. At one time the Columbia was one of the top salmon producing river systems in the world. Previously active fishing sites, like Celilo Falls in the eastern Columbia River Gorge highlight the relative decline in fishing along the Columbia during the last century. The presence of dams coupled with over fishing has played a major role in the reduction of salmon populations. Fish ladder were installed to help the fish journey to spawning waters. Additionally each dams' reservoirs are closely regulated by the Bonneville Power Administration to insure one dam is not "hoarding" water so salmon and other fish have adequate habitat. ==Pollution== Contaminants have seeped into the Columbia River from the Hanford Site. This Reservation was established in 1940s as part of the Manhattan Project. It is located along the river in southeastern Washington on 586 mile² (1,520 km²) of some of the most fertile land in North America, but at the time of establishment, the area was considered a wasteland. The site served as a plutonium production complex with nine nuclear reactors and related facilities. Most of the facilities were shut down in the 1960s. The site is currently under control of the Department of Energy, and is currently a CERCLA, or superfund site. The superfund cleanup is expected to be completed in 2030. There are also many more major problems that the Columbia River has, from raw sewage dumpage, to hundreds of tons of slag dumped daily. Because of the pollution problems, some people would say the future health of the Columbia River does not look good. However, newspapers such as ''The Oregonian'' are calling attention to the problems of rivers. There is hope that humans, industries, and safe water can be made to co-exist. [[Image:Columbia.png|thumb|right|350px|Map of the Columbia River basin with dams highlighted.]] ==See also== *Columbia River Highway *Tributaries of the Columbia River *Cities on the Columbia River *Hydroelectric dams on the Columbia River *Cascades Rapids *List of Washington rivers *List of Oregon rivers *List of British Columbia rivers ==External links and references== *[http://www.columbiariverhighway.com/ Historic Columbia River Highway] *[http://www.nationalgeographic.com/earthpulse/columbia/index_flash.html ''National Geographic'' on the Columbia] *[http://www.ccrh.org/ Center for Columbia River history] *[http://www.crmm.org/ Columbia River Maritime Museum] *[http://www.fs.fed.us/r6/columbia/forest/ Columbia River Gorge National Scenic Area] *[http://www.ccalmr.ogi.edu/CORIE/ CORIE, a Columbia River observation and prediction system] British Columbia rivers Washington rivers Oregon rivers Lewis and Clark la:Columbia (flumen) Columbia RiverThe Yukon is almost twice the length of the Columbia (2000 mi vs. 1250 mi), but is not nearly as developed and harnessed. While it is larger in area drained, the Columbia has a larger total volume. See http://www.gi.alaska.edu/ScienceForum/ASF9/929.html -- BryceHarrington Only hydro projects in the U.S. are listed. I'm pretty sure there are Canadian ones. -- User:Dmbaguley 11:56, 31 Oct 2003 (UTC) :Found 3 canadian dams, added them -- User:Dmbaguley 07:18, 1 Nov 2003 (UTC) The tributaries are listed going upstream, the cities alphabetically, and the dams going downstream. Should they all three be upstream, downstream, or something? User:Dmbaguley 13:24, 31 Oct 2003 (UTC) :Hmm. I hadn't noticed. When I added several tributaries to the Columbia (as many as I could find from my atlases), they were already in order going upstream, so I left it in that order. :Giving this a moment's thought, I'm tempted to arrange all of these lists in the order of going upstream. IIRC, one talks about the left & right hand sides of a river as if one is standing at the mouth of the river & looking upstream. (And the longest list -- that of tributaries -- is already in that order.) However, if this causes too much confusion, I vote we standardize on alphabetical. :How are the other river articles organized? -- User:Llywrch 22:30, 31 Oct 2003 (UTC) :The Mississippi River article lists the states and cities going downstream, which seems like the most natural choice to my taste. It is the way the river flows, after all. And one generally (and in this article) starts describing a river by saying where the headwaters are. User:Dmbaguley 00:09, 1 Nov 2003 (UTC) ::I've done some trib lists, but have consistently waffled :-) - sometimes alphabetical, sometimes in upstream order. Alpha would be better if there were so many tributaries that readers are likely to miss the one being looked for, 20 or more, and there are plenty of rivers with that many "top-level" tributaries, but upstream order is more esthetic, that's why I would do if I could only pick one. (Hmmm, back to hack on Ogooue then...) Although downstream order does match with narrative description, the lists are in a separate part of the article, and on the average both downstream towns and tributaries are more important; so upstream order has the nice property of tending to list the most important ones first. Time for a WikiProject! User:Stan Shebs 00:16, 1 Nov 2003 (UTC) ---- I've removed 2 entries from the tributaries list: * Scappose Creek - There are actually 2 Scappose Creeks, neither of which are significant enough for inclusion. Let's focus on adding more important tributaries first. :However, I left Multnomah Creek in, because Multnomah Falls is part of it. * Salmon River - The only Salmon River in the Columbia drainage area I have been able to identify is a tributary of the Sandy River. Let's keep the list to streams & rivers that directly empty into the Columbia. -- User:Llywrch 22:30, 1 Nov 2003 (UTC) ---- Fact that Hanford has contaiminated the Columbia River, [http://yosemite.epa.gov/r10/nplpad.nsf/0/a0d0a740285af3de852565920078b58d?OpenDocument&ExpandSection=-1000 Epa Link title] -- Woofles The internal links list I found on the Columbia River is interminable. It was hard for me to see a connection between the Illinois River, in Soutern Oregon, and the Columbia. It obviously doesn't abut it. Finally I realized the category might be "Oregon Rivers" or maybe "NW Rivers." Other entries baffled me, as well. Being an Oregonian helped me to sort out some things. But few persons who wanted more info would bother to look up that whole list. I certainly wish it could be sub-topiced: as, Tributaries of the Columbia; towns on or near the Columbia; other rivers. Or state the reasons why these links are given. Marilee Columbia river#REDIRECT Columbia River See other meanings of words starting from letter: CCA | CB | CD | CE | CF | CG | CH | CI | CJ | CK | CL | CM | CN | CO | CP | CR | CS | CT | CU | CW | CX | CY | CZ |Words begining with Columbia_River: Columbia_River Columbia_River Columbia_river Columbia_River-Revelstoke Columbia_River_Basin Columbia_river_dams Columbia_River_Gorge Columbia_river_highschool Columbia_River_Highway Columbia_River_High_School Columbia_river_high_school Columbia_River_High_School,_Vancouver,_WA Columbia_River_High_School,_Vancouver,_Washington Columbia_River_Plateau Columbia_River_Treaty
Sponsored links: praca, nurkowanie.
|
These materials are based on Wikipedia and licensed under the GNU FDL
YouTube.com videos better site than Turbo Tax 2007 |
|
|