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Topic: Glen Canyon Dam

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	Glen Canyon Dam at Lake Powell & Page, AZ
		On October 15, 1956, the first blast occurred and the construction of Glen Canyon Dam was officially underway.
		The site met several criteria: the area forming the basin could contain an immense amount of water; the canyon walls and bedrock foundation were strong and stable enough to safely support the high dam; and a large source of good rock and sand was available at nearby Wahweap Creek.
		By 1959, the Glen Canyon Bridge was completed permitting the trucks to deliver equipment and materials for the dam and the new town of
	www.canyon-country.com /lakepowell/gcdam.htm (499 words)

	Glen Canyon Dam - Wikipedia, the free encyclopedia
		The dam has been controversial since its inception, because it caused the flooding of Glen Canyon to create a man-made reservoir, Lake Powell.
		Although the dam was not dedicated until 1966, it was able to begin blocking the flow of the river in 1963.
		"Glen Canyon died, and I was partly responsible for its needless death.
	en.wikipedia.org /wiki/Glen_Canyon_Dam (634 words)

	Reference.com/Encyclopedia/Dam
		Rock-fill dams are embankments of loose rock with either a watertight upstream face of concrete slabs or timber or a watertight core.
		Earth dams, also called earthen and earth-fill dams, are constructed as a simple homogeneous embankment of well-compacted earth, sometimes with a watertight concrete or clay core or upstream face, or sometimes with a hydraulic fill to produce a watertight core.
		A type of temporary earth dam occasionally used in high latitudes is the frozen-core dam, in which a coolant is circulated through pipes inside the dam to maintain a watertight region of permafrost within it.
	www.reference.com /browse/wiki/Dam (1795 words)

	Glen Canyon Dam Controversy (Site not responding. Last check: 2007-10-19)
		Glen Canyon City was located in Kane County and largely developed to facilitate the smooth operation of the project, provide housing for workers, and begin an initial permanent base for recreational uses of the area.
		The first town meeting at Glen Canyon City was held at the Rusmar Boardinghouse in June 1958 to organize a fire department, appoint a temporary town manager, and discuss options for education of the children in town.
		The Glen Canyon Bridge provided access to both sides of the river for construction needs and was built by the Kiewit-Judson Pacific Murphy Company, which placed the first steel for the arch span on 7 May 1958 and the last on 6 August 1958.
	historytogo.utah.gov /utah_chapters/utah_today/glencanyondamcontroversy.html (1610 words)

	Glen Canyon Dam (Site not responding. Last check: 2007-10-19)
		The Economic History of the Glen Canyon Dam
		Overview of the Glen Canyon Dam and the Colorado River
		The Effects of the Glen Canyon Dam on the Navajo Indians
	www2.kenyon.edu /Projects/Dams/glen.html (63 words)

	Glen Canyon Dam
		Glen Canyon Dam is on the mainstem of the Colorado River near the Arizona-Utah state line.
		The general conclusion of the Glen Canyon Environmental Studies Phase 1 was that the dam had blocked much of the sediment coming down the Colorado River and therefore beaches were not being replenished with sand.
		The result was that Glen Canyon operations were changed to reflect a revised flow regime; approximately one-third of the generating capacity was lost due to changed operations.
	www.creda.org /Pages/Glen.html (1139 words)

	The History of Glen Canyon Dam
		When the Glen Canyon Institute was founded in 1995 to restore Glen Canyon, one of the first statements I heard was one that has been repeated hundreds of times.
		Glen Canyon dam was "needed" so that exactly 7.5 million acre feet of water (one half of the average yearly flow) would flow downstream to "lower" water users annually.
		Big dams, for all their water storage capability, are bad and whatever benefits they give to the world are immensely overshadowed by the destruction that they cause.
	www.canyoncountryzephyr.com /feb-march2002/rich.htm (2209 words)

	MSN Encarta - Grand Canyon
		A spectacular section of the canyon, together with plateau areas on either side of it, are preserved as the Grand Canyon National Park, which receives about four million visitors a year.
		In the entire canyon region, the rocks have been broken by jointing and faulting, and fractures in the rocks resulting from these processes have contributed to the relatively rapid erosion of the gorge.
		The first passage of the canyon was accomplished in 1869 by the American geologist John Wesley Powell and ten companions, who made the difficult journey through the length of the gorge in four rowboats.
	encarta.msn.com /encyclopedia_761560790/Grand_Canyon.html (1081 words)

	Lake Powell Visitors Guide - Glen Canyon Dam
		Glen Canyon Dam was engineered and constructed as part of the Colorado River Storage Project.
		The remote location where Glen Canyon Dam stands today was selected by a group of Bureau of Reclamation engineers and geologists working from 1946 to 1948, some of whom returned to visit Lake Powell in later years.
		Glen Canyon Bridge was actually constructed in California, disassembled and half of the bridge was transported to each side of the canyon.
	www.powellguide.com /lakepowell/glencanyondam.html (590 words)

	Lake Powell Reservoir and Glen Canyon Dam
		This is a brief introduction to the issues surrounding Glen Canyon, the Grand Canyon, Lake Powell reservoir, and the Colorado River.
		Glen Canyon Dam was built as the final piece of the Colorado River Compact with the primary purpose of water storage to ensure water delivery to the Lower Basin states of California, Arizona, and Nevada.
		In the time since the dam was first considered, it has become increasingly apparent that the Glen Canyon Dam and Lake Powell reservoir are not worth the sacrifices that must be made to keep them in operation.
	www.humanistsofutah.org /2004/DamCrisis_Aug-04.html (1084 words)

	Glen Canyon
		A public outcry against placing a dam in a national park soon had an impact in congress, and the Colorado River storage project--once considered a sure bet--suddenly was in doubt as congressmen started to back away from their support.
		The steep canyon walls would be filled to a depth of five hundred feet for 180 miles by some eight trillion gallons of water, with nothing to stand in the way.
		Glen Canyon Dam was authorized in april of 1956.
	www.kued.org /productions/glencanyon/script/script.html (7131 words)

	Glen Canyon/Lake Powell N.R.A. -- Welcome
		Glen Canyon NRA is nestled in the center of the Grand Circle, a collection of seven national parks, seven national monuments, and numerous state parks, historical sites, prehistoric Indian ruins, colorful ghost towns, and stunning geologic formations that reach from northern Arizona into southern Utah.
		In the face of growing demands for water and electrical energy, Glen Canyon Dam was built to supply water to the Lower Basin states of California, Arizona, and Nevada.
		Glen Canyon Dam, which backs up the Colorado River through Glen Canyon to form Lake Powell, was built to meet these demands.
	www.americanparknetwork.com /parkinfo/gp (451 words)

	Glen Canyon Dam
		The dam, completed in 1963 and dedicated in 1966 after completion of its power-generation facilities, regulates the flow of the upper Colorado and its tributaries and produces hydroelectricity (since 1964).
		The dam sharply reduced the seasonal flow of the Colorado downstream, dramatically altering the ecology of the river in the Grand Canyon.
		Downstream is the Glen Canyon Bridge, 1,271 ft (387 m) long and 700 ft (213 m) high, one of the world's longest and highest steel-arch bridges.
	www.factmonster.com /ce6/us/A0820993.html (278 words)

	Grand Canyon Studies: Glen Canyon Dam - USGS WCMG
		Glen Canyon Dam was built on the Colorado River in Arizona by the U.S. Bureau of Reclamation in the late '50's and early '60's (see map).
		Glen Canyon Dam stores and releases water from Lake Powell, which holds about 24.3 million acre-feet.
		"Glen Canyon Powerplant has eight generators with a maximum combined capacity of 1,356,000 kilowatts.
	walrus.wr.usgs.gov /grandcan/dam.html (463 words)

	Glen Canyon Institute
		Glen Canyon Institute (GCI) was founded in 1996 as a charitable 501(c)3 nonprofit organization with the mission of restoring a healthy Colorado River through Glen Canyon.
		Leading the movement to restore this uniquely beautiful place, Glen Canyon Institute immediately began work to conduct scientific studies on the impacts of Glen Canyon Dam, and compiled the results in the Citizen's Environmental Assessment (CEA), which was released in 2001.
		Glen Canyon Institute is that is governed by a distinguished Board of Trustees.
	www.glencanyon.org /aboutgci/aboutgci.php (317 words)

	Utah - Glen Canyon National Recreation Area - Glen Canyon Dam
		Glen Canyon Dam is two miles west of Page and is built across a deep red-walled canyon which continues southwards in its original state 15 miles to Lees Ferry.
		The main road (US 89) does not pass over the dam, as is the case with US 93 over the Hoover Dam, instead it crosses the river on a graceful steel girder bridge a short distance away.
		The operation of the dam continues to affect the Grand Canyon downstream, as peak power requirements result in a daily variation in the amount of water being released, which causes the level of the Colorado to rise and fall each day.
	www.americansouthwest.net /utah/glen_canyon/glen_canyon_dam.html (269 words)

	Glen Canyon Dam National Recreation Area - 2002 Winter Olympics coverage
		But as Glen Canyon Dam began backing up the waters of the Colorado River in 1963 to slowly form Lake Powell, tourists and boaters soon began discovering the water's beauty and solitude.
		The Glen Canyon Dam was authorized by Congress in 1957 as a way to store water for the Southwestern states.
		Glen Canyon Dam, with Lake Powell in the backdrop.
	www.deseretnews.com /oly/view/0,3949,20000021,00.html (872 words)

	Glen Canyon Institute
		The likely process of bypassing Glen Canyon Dam would involve lowering the reservoir level down to the dead pool level (237 feet) and drilling bypass tunnels around the base of the dam to mobilize the remaining water and sediment around the dam.
		Glen Canyon Dam is responsible for drowning the historical spawning grounds for the native fish in the Colorado River, causing the species to be listed on the threatened and endangered list.
		Glen Canyon Institute has stated its goal, but we recognize that all the information to answer questions about restoring Glen Canyon is not yet in hand.
	www.glencanyon.org /aboutgci/faq.php (4116 words)

	deseretnews.com \| Glen Canyon Dam begins a grand flush
		Glen Canyon Dam released water to boost sediment along the river in 1996.
		The woman, who did not wish to be identified in the newspaper, said that when peak flow begins, the columns of water should fly across the canyon and hit the other side of the huge dam.
		The studies may help redesign outflows from the dam to better preserve and restore the region downstream, according to a press release by the bureau.
	deseretnews.com /dn/view/0,1249,595107172,00.html (664 words)

	Glen Canyon/Lake Powell -- Glen Camyon Dam
		The Glen Canyon Dam was created amid great controversy and compromise over the fate of America's western water resources and vast wilderness tracts.
		Water began to back up behind the dam in 1963, reaching its "full pool" in 1980, and much of the Glen Canyon that John Wesley Powell had explored disappeared from view.
		Glen Canyon Dam was the last dam built on the Colorado River.
	www.americanparknetwork.com /parkinfo/gp/damlake.html (356 words)

	'Cave Creek' fire smoke shut down Glen Canyon Dam power turbines
		Operations at the dam, about 275 miles north of the fire, were disrupted intermittently from late June 23 through Sunday, according to the U.S. Bureau of Reclamation.
		The fire burned close to high-voltage power lines that bring electricity from Glen Canyon Dam to the Phoenix area, but it was the smoke and not the flames that caused the problems, said Bureau of Reclamation spokesman Barry Wirth.
		Because the bureau is required to maintain a minimum flow of water into the river, dam operators had to switch on the bypass tubes on each side of the giant structure until the turbines could be restarted.
	www.azcentral.com /arizonarepublic/local/articles/0701damfire01.html (549 words)

	Glen Canyon Dam: Politics
		Environmentalists argue that Glen Canyon Dam was originally built to control flooding and as it no longer serves that purpose, the lake should be drained.
		Thus, as the reason to create the dam, to regulate the flow of the river, was based on an untrue fact, the Compact should be voided.
		The Glen Canyon Institute hosted a workshop on October 13-14, 1998 to discuss the draining of Lake Powell.
	www2.kenyon.edu /Projects/Dams/glp04smi.html (1406 words)

	Colorado Springs Outdoors (Site not responding. Last check: 2007-10-19)
		Glen Canyon National Recreation Area and Grand Canyon-Parashant and Vermilion Cliffs national monuments are obscure corners of the desert, but they make up the starkly beautiful heart of the canyon country between Grand Canyon, Zion, Bryce and Canyonlands national parks.
		On the float trip through Glen Canyon, Zwinger, the botany expert, was joined by a photographer well-known for his books of red rock landscapes and an anthropologist and author steeped in the lore of ancestral Pueblo tribes that had left petroglyphs on the sandstone walls.
		With them was a geology professor and longtime Grand Canyon boatman who could discuss events in the canyon from the great Permian die-off when 90 percent of life was extinguished a quarter billion years ago to the more recent near-catastrophe when Glen Canyon Dam almost failed in 1983.
	outdoors.coloradosprings.com /fullStory.jsp?id=3027 (1464 words)

	Glen Canyon Institute
		During the course of filming the Gages traveled the country from dam to dam, interviewing dam operators, fishermen, scientists and government officials, such as former Secretary of the Interior Bruce Babbitt.
		A documentary of the history, politics and values that led to the construction of Glen Canyon Dam.
		Winter called this area Bach's Canyon, which he discovered on his search for the "great acoustic place." The album was inspired both by the beauty of the surroundings and the spirits of Winter's wife and newborn daughter.
	www.glencanyon.org /store/av.php (503 words)

	Glen Canyon Dam on Encyclopedia.com (Site not responding. Last check: 2007-10-19)
		GLEN CANYON DAM [Glen Canyon Dam] 710 ft (216 m) high, 1,560 ft (475 m) long, NE Ariz., on the Colorado River.
		The key unit of the U.S. Bureau of Reclamation's Colorado River storage project, it is one of the world's largest concrete dams (larger in bulk, though not in height, than Hoover Dam).
		Water Vapor Almost Busts Dam A strange phenomenon was shredding Glen Canyon Dam.
	www.encyclopedia.com /html/G/GlenC1any.asp (811 words)

	Glen Canyon Natural History Association \| Glen Canyon Dam
		The Glen Canyon Dam is a vital link in the Colorado River Storage Project, which is a series of dams and reservoirs along the Colorado River.
		These dams and their reservoirs work together to provide water, electricity, flood control, and recreation to millions of people.
		Glen Canyon Dam, built between 1960 and 1963, stands 710' from bedrock and holds back an amazing 27,000,000 acre feet of water when Lake Powell is full.
	www.glencanyonassociation.org /glen_canyon_dam/glencanyondam.php (216 words)

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