The Chinle is controversially considered to be synonymous to the Dockum Group of eastern Colorado and New Mexico, western Texas, the Oklahoma panhandle, and southwestern Kansas. The Chinle is sometimes named as a formation within the Dockum Group in New Mexico. The Chinle Formation is part of the Colorado Plateau and Range, a probable separate depositional basin within the Chinle is found in northwestern Colorado and northeastern Utah. The southern portion of the Chinle reaches a thickness of a little over 520 m. Typically, the Chinle rests unconformably on the Moenkopi Formation, there is no designated type locality for this formation. United States Geological Survey economic geologist Raymond C, robeck in 1956 revised the unnamed members of Gregory by identifying and naming the Temple Mountain member as the basal-most unit in the area of the San Rafael Swell of Utah. In 1957 John H. Stewart revised the Shinarump Conglomerate of G. K. Gilbert,1875, and Edwin E. Howell,1875, and Gregory,1917, and renamed it the Shinarump member of the Chinle formation.
An overview of the geology of the area was created by USGS geologist Forrest G. Poole, sikich revised the unit and assigned more members assigned in 1965. The areal extent of the unit was mapped by Wilson and Stewart in 1967, in 1972 the areal limits were modified and an overview created by Stewart and others. Kelley assigned more members and revised the unit in 1972, Lucas and Hayden did the same thing in 1989. The Rock Point Member was assigned by Dubiel in 1989, the Chinle was raised to group status by Lucas in 1993, thus raising many of the members to formation status. He included the formations of the Dockum Group of eastern New Mexico and this modified nomenclature is controversial, many still retain the Chinle as a formation and separate out the Dockum Group. The Dockum was named in 1890, before the Chinle, if Lucas is correct, his Chinle Group should be named the Dockum Group due to stratigraphic nomenclature rules. Overviews of the Chinle were created by Dubiel and others and Hintze, the formation members and their thicknesses are highly variable across the Chinle.
The stratigraphically lowest formation is the Temple Mountain Member, however, in most areas, the basal member is the Shinarump Member. The Shinarump is a braided-river system channel-deposit facies, the Monitor Butte Member overlies the Shinarump in most areas. The Monitor Butte is an overbank facies with lacustrine deposits and this is overlain in western areas by the channel-deposit facies Moss Back Member. More commonly, the Monitor Butte grades into the Petrified Forest Member, the Petrified Forest is predominately overbank deposits with thin lenses of channel-deposit facies and lacustrine deposits
The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period 145 million years ago to the beginning of the Paleogene Period 66 Mya. It is the last period of the Mesozoic Era, the Cretaceous Period is usually abbreviated K, for its German translation Kreide. The Cretaceous was a period with a warm climate, resulting in high eustatic sea levels that created numerous shallow inland seas. These oceans and seas were populated with now-extinct marine reptiles and rudists, during this time, new groups of mammals and birds, as well as flowering plants, appeared. The Cretaceous ended with a mass extinction, the Cretaceous–Paleogene extinction event, in which many groups, including non-avian dinosaurs, pterosaurs. The end of the Cretaceous is defined by the abrupt Cretaceous–Paleogene boundary, the name Cretaceous was derived from Latin creta, meaning chalk. The Cretaceous is divided into Early and Late Cretaceous epochs, or Lower and Upper Cretaceous series, in older literature the Cretaceous is sometimes divided into three series, Neocomian and Senonian.
A subdivision in eleven stages, all originating from European stratigraphy, is now used worldwide, in many parts of the world, alternative local subdivisions are still in use. As with other geologic periods, the rock beds of the Cretaceous are well identified. No great extinction or burst of diversity separates the Cretaceous from the Jurassic and this layer has been dated at 66.043 Ma. A140 Ma age for the Jurassic-Cretaceous boundary instead of the usually accepted 145 Ma was proposed in 2014 based on a study of Vaca Muerta Formation in Neuquén Basin. Víctor Ramos, one of the authors of the study proposing the 140 Ma boundary age sees the study as a first step toward formally changing the age in the International Union of Geological Sciences, due to the high sea level there was extensive space for such sedimentation. Because of the young age and great thickness of the system. Chalk is a type characteristic for the Cretaceous. It consists of coccoliths, microscopically small calcite skeletons of coccolithophores, the group is found in England, northern France, the low countries, northern Germany, Denmark and in the subsurface of the southern part of the North Sea.
Chalk is not easily consolidated and the Chalk Group still consists of sediments in many places. The group has other limestones and arenites, among the fossils it contains are sea urchins, belemnites and sea reptiles such as Mosasaurus. In southern Europe, the Cretaceous is usually a marine system consisting of competent limestone beds or incompetent marls
Glen Canyon is a natural canyon in the Vermilion Cliffs area of southeastern and south-central Utah and north-central Arizona in the United States. Like the Grand Canyon to the south, Glen Canyon is part of the system of canyons carved by the Colorado River. In 1963, a reservoir, Lake Powell, was created by the construction of the Glen Canyon Dam, flooding much of Glen Canyon beneath water hundreds of feet in depth. Lake Powell was the result of negotiations over the damming of the Green River within Dinosaur National Monument. The dam remains an issue for modern environmentalist movements. Beginning in the late 1990s, the Sierra Club and other organizations renewed the call to dismantle the dam, Glen Canyon and Lake Powell are managed by the U. S. Department of the Interior within Glen Canyon National Recreation Area. Between 1958 and 1960, four investigative phases, combined with other surveys prior to 1957, the Lower Glen Canyon survey was completed in 1958. Excavations began during the summer of 1958 on 16 sites, open sites are the majority on both sides of the river.
The majority of sites, mostly Navajo camps, feature lithic garbage or ceramics, most of the cultural remains found are chipped stone tools, including projectile points, drills, knives and ground stone tools and manos. The collection of sherds are mostly Tusayan Gray Ware and Tusayan White Ware, petroglyph panels are found throughout Glen Canyon. “Pecked and incised figures depict mountain sheep, human figures, human handprints, geometric figures range from circles and spirals to highly complex rectilinear patterns. The human figures have triangular bodies, painted figures have been reported for both sides of the river. Petroglyph panels of such quality are lacking from the regions adjacent to Glen Canyon”. Studies indicate a chronology for the Lower Glen Canyon prehistory, “from pre-A. D.1 to the 15th century, a Late Basketmaker II Era is represented by several sites. Radiocarbon dates from charcoal material are from A. D.250 to 440. Basketmaker III is not found in the Lower Glen Canyon, but is documented in Navajo Canyon, Basketmaker III introduces fired pottery, mostly Lino Black-on-gray and Lino Gray, and some small amounts of Lino Fugitive Red and Obelisk Gray.
The Basketmaker culture is believed to have lasted than Pueblo I, Pueblo I Era remains are found at Rock Creek in Lower Glen Canyon, and in Navajo Canyon. The pottery types are Kana-a Black-on-white, Deadmans Black-on-red, and Kana-a Gray, Pueblo I is the best documented period of Navajo Canyon, beginning in 800 A. D, lasting 200 years
A national park is a park in use for conservation purposes. Often it is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns, although individual nations designate their own national parks differently, there is a common idea, the conservation of wild nature for posterity and as a symbol of national pride. An international organization, the International Union for Conservation of Nature, although Yellowstone was not officially termed a national park in its establishing law, it was always termed such in practice and is widely held to be the first and oldest national park in the world. The first area to use national park in its legislation was the USs Mackinac Island. Australias Royal National Park, established in 1879, was the third official national park. In 1895 ownership of Mackinac Island was transferred to the State of Michigan as a state park, as a result, Australias Royal National Park is by some considerations the second oldest national park now in existence.
The largest national park in the meeting the IUCN definition is the Northeast Greenland National Park. According to the IUCN,6,555 national parks worldwide met its criteria in 2006, IUCN is still discussing the parameters of defining a national park. National parks are almost always open to visitors, in 1971, these criteria were further expanded upon leading to more clear and defined benchmarks to evaluate a national park. In 1810, the English poet William Wordsworth described the Lake District as a sort of property, in which every man has a right and interest who has an eye to perceive. It was known as Hot Springs Reservation, but no authority was established. Federal control of the area was not clearly established until 1877, John Muir is today referred to as the Father of the National Parks due to his work in Yosemite. He published two articles in The Century Magazine, which formed the base for the subsequent legislation. President Abraham Lincoln signed an Act of Congress on July 1,1864, ceding the Yosemite Valley, according to this bill, private ownership of the land in this area was no longer possible.
The state of California was designated to manage the park for use, resort. Leases were permitted for up to ten years and the proceeds were to be used for conservation, a public discussion followed this first legislation of its kind and there was a heated debate over whether the government had the right to create parks. The perceived mismanagement of Yosemite by the Californian state was the reason why Yellowstone at its establishment six years was put under national control, in 1872, Yellowstone National Park was established as the United States first national park, being the worlds first national park. In some European countries, national protection and nature reserves already existed, such as Drachenfels, Yellowstone was part of a federally governed territory
A houseboat is a boat that has been designed or modified to be used primarily as a home. Some houseboats are not motorized, because they are moored, kept stationary at a fixed point. However, many are capable of operation under their own power, float house is a Canadian and American term for a house on a float, a rough house may be called a shanty boat. In Western countries, houseboats tend to be owned privately or rented out to holiday-goers. Examples of this include, but are not limited to, London, in Zimbabwe, specifically on Lake Kariba, houseboats have been in use since the creation of the lake in the late 1950s/early 1960s. A houseboat makes it easy to experience the Zambezi basin and all the wildlife, as a lot of game come down to the water for drinking. There is a houseboat and fishing community on the side of Hong Kong Island known as Aberdeen floating village. There was one such community in the Yau Ma Tei Typhoon Shelter, in India, houseboats as accommodation for tourists are common on the backwaters of Kerala, see below, and on the Dal Lake near Srinagar in Jammu and Kashmir.
Houseboats in Kerala, south India, are huge, slow-moving barges used for leisure trips and they are a reworked model of Kettuvallams, which, in earlier times, were used to carry rice and spices from Kuttanad to the Kochi port. Kerala houseboats were considered a convenient means of transportation, the popularity of Kettuvallams has returned in the function as major tourist attractions. Such a houseboat is about 60 to 70 feet long and about 15 feet wide at the middle, the hull is made of wooden planks that are held together by ropes of coconut fiber, the usual wood is Anjali. The roof is made of poles and palm leaves. The exterior of the boat is painted with coats of cashew nut oil. Unlike their counterparts in Kerala, the houseboats in Srinagar, Jammu & Kashmir are usually stationary and they are usually moored at the edges of the Dal Lake and Nageen lakes. Some of the houseboats there were built in the early 1900s and these houseboats are made of wood and usually have intricately carved wood paneling.
The houseboats are of different sizes, some having up to three bedrooms apart from a room and kitchen. Srinagars thousand or so houseboats are moored along sections of the Dal and Nagin Lakes, like hotels, houseboats vary in degree of luxury and have been accordingly graded by the Department of Tourism. A luxury houseboat, like a hotel, has fine furniture, good carpets and modern bathroom fittings, while the D category of houseboats
San Juan County, Utah
San Juan County is a county located in the southeastern portion of the U. S. state of Utah. As of the 2010 census, the population was 14,746 and its county seat is Monticello, while its most populous city is Blanding. The county was named by the Utah State Legislature for the San Juan River, San Juan County borders Arizona and New Mexico at the Four Corners. San Juan County was organized in 1880, according to the U. S. Census Bureau, the county has a total area of 7,933 square miles, of which 7,820 square miles is land and 113 square miles is water. It is the largest county by area in Utah, the countys western and southern boundaries lie deep within gorges carved by the Colorado and San Juan Rivers. Tributary canyons, cutting through layers of the surrounding deserts, have carved the land up with chasms, cliffs. In the center of the county are Cedar Mesa, Comb Wash, Natural Bridges, canyonlands National Park is primarily within the county borders. The Eastern side of Glen Canyon National Recreation Area / Lake Powell in in San Juan County, rising above all, the Blue Mountains reach to nearly 12,000 feet and the La Sal Mountains rise to 13,000 feet.
Both ranges are covered with lush forests vividly contrasting with the scenery below, the elevation change within the county is from near 13,000 feet in the La Sal Mountains to 3,000 feet at Lake Powell, an elevation change of 10,000 feet. The county is cut by deep and spectacular canyons, red rock and mountain meadows and evergreen forest. The towns run primarily on an axis along U. S. Route 191. The only operating Uranium Processing plant in the United States operates in the town of Blanding, San Juan County is home to numerous oil and gas fields that produce primarily from the Desert Creek and Ismay Formations. San Juan County is bordered by more counties than any county in the United States. San Juan County in Utah and New Mexico are two of twenty-two counties or parishes in the United States with the name to border each other across state lines. The racial and ethnic composition of the population was 50. 4% Native American,45. 8% white,0. 3% Asian,0. 2% African American and 2. 3% reporting two or more races. 4.
4% of the population was Hispanic or Latino of any race, the 2000 census there were 14,413 people,4,089 households and 3,234 families residing in the county. The population density was 2 people per square mile, there were 5,449 housing units at an average density of 1 per square mile. 3. 75% of the population were Hispanic or Latino of any race,18. 70% of all households were made up of individuals and 6. 70% had someone living alone who was 65 years of age or older
Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east, the state of Hawaii is an archipelago in the mid-Pacific Ocean. The U. S. territories are scattered about the Pacific Ocean, the geography and wildlife of the country are extremely diverse. At 3.8 million square miles and with over 324 million people, the United States is the worlds third- or fourth-largest country by area, third-largest by land area. It is one of the worlds most ethnically diverse and multicultural nations, paleo-Indians migrated from Asia to the North American mainland at least 15,000 years ago. European colonization began in the 16th century, the United States emerged from 13 British colonies along the East Coast. Numerous disputes between Great Britain and the following the Seven Years War led to the American Revolution. On July 4,1776, during the course of the American Revolutionary War, the war ended in 1783 with recognition of the independence of the United States by Great Britain, representing the first successful war of independence against a European power.
The current constitution was adopted in 1788, after the Articles of Confederation, the first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties. During the second half of the 19th century, the American Civil War led to the end of slavery in the country. By the end of century, the United States extended into the Pacific Ocean. The Spanish–American War and World War I confirmed the status as a global military power. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the sole superpower. The U. S. is a member of the United Nations, World Bank, International Monetary Fund, Organization of American States. The United States is a developed country, with the worlds largest economy by nominal GDP. It ranks highly in several measures of performance, including average wage, human development, per capita GDP. While the U. S. economy is considered post-industrial, characterized by the dominance of services and knowledge economy, the United States is a prominent political and cultural force internationally, and a leader in scientific research and technological innovations.
In 1507, the German cartographer Martin Waldseemüller produced a map on which he named the lands of the Western Hemisphere America after the Italian explorer and cartographer Amerigo Vespucci
Glen Canyon Dam
Glen Canyon Dam is a concrete arch-gravity dam on the Colorado River in northern Arizona, United States, near the town of Page. The 710-foot high dam was built by the U. S. Bureau of Reclamation from 1956 to 1966 and forms Lake Powell, a dam in Glen Canyon was studied as early as 1924, but these plans were initially dropped in favor of a dam in Black Canyon. After a long fight, the USBR agreed not to build the dam in Dinosaur, since first filling to capacity in 1980, Lake Powell water levels have fluctuated greatly depending on water demand and annual runoff. Operation of Glen Canyon Dam helps ensure a distribution of water between the states of the Upper Colorado River Basin and the Lower Basin. During years of drought, Glen Canyon guarantees a water delivery to the Lower Basin states, in wet years, it captures extra runoff for future use. The dam is a source of hydroelectricity, averaging over 4 billion kilowatt hours per year. Water managers and utilities state that the dam is a source of renewable energy.
Annual discharge from the Colorado River and its tributaries ranges from 4 to 22 million acre feet and the rivers enormous silt or sediment load, created problems for settlements in the Lower Colorado River Valley and navigation on the lower portion of the river. During droughts, there was too little water available for irrigation, in 1904, the Colorado River was accidentally redirected after it damaged a canal gate in Mexico, causing the river to flood part of Californias Imperial Valley and create the Salton Sea. After this catastrophe and Arizona began to call for a dam to control the tempestuous river, in 1922, six U. S. states signed the Colorado River Compact to officially allocate the flow of the Colorado River and its tributaries. The third lower basin state, did not ratify the Compact until 1944 because it was concerned that California might seek to appropriate a portion of its share before it could be put to use. The total,16.5 million acre feet, was based on thirty years of streamflow records starting in the late 1890s.
It was believed to represent the flow as measured at Lees Ferry. As it turned out, the early 20th century was one of the wettest periods in the last 800 years, the dependable natural flow past Lees Ferry is now believed to be about 13.5 to 14.6 million acre feet. These studies found that the lower Colorado sites had stronger foundation rock which might result in less reservoir seepage, the Glen Canyon site, was so remote that delivering supplies and transporting workers there would be infeasible at the time. However, what killed the first Glen Canyon proposal was the fact that it lies upstream of the Lees Ferry dividing line. With its substantial Congressional clout, California refused to allow the virtual faucets of a Colorado River dam to be built in what amounted to hostile territory. However, it was not able to weather the worst floods or droughts, but most importantly, Hoover only controlled the lower portion of the river
Utah is a state in the western United States. It became the 45th state admitted to the U. S. on January 4,1896, Utah is the 13th-largest by area, 31st-most-populous, and 10th-least-densely populated of the 50 United States. Utah has a population of more than 3 million, approximately 80% of whom live along the Wasatch Front, Utah is bordered by Colorado to the east, Wyoming to the northeast, Idaho to the north, Arizona to the south, and Nevada to the west. It touches a corner of New Mexico in the southeast, approximately 62% of Utahns are reported to be members of The Church of Jesus Christ of Latter-day Saints or LDS, which greatly influences Utahn culture and daily life. The LDS Churchs world headquarters is located in Salt Lake City, Utah is the only state with a majority population belonging to a single church. The state is a center of transportation, information technology and research, government services, mining, in 2013, the U. S. Census Bureau estimated that Utah had the second fastest-growing population of any state.
St. George was the metropolitan area in the United States from 2000 to 2005. Utah has the 14th highest median income and the least income inequality of any U. S. state. A2012 Gallup national survey found Utah overall to be the best state to live in based on 13 forward-looking measurements including various economic, the name Utah is derived from the name of the Ute tribe. It means people of the mountains in the Ute language, according to other sources Utah is derived from the Apache name Yudah which means Tall. These Native American tribes are subgroups of the Ute-Aztec Native American ethnicity and were sedentary, the Ancestral Pueblo people built their homes through excavations in mountains, and the Fremont people built houses of straw before disappearing from the region around the 15th century. Another group of Native Americans, the Navajo, settled in the region around the 18th century, in the mid-18th century, other Uto-Aztecan tribes, including the Goshute, the Paiute, the Shoshone, and the Ute people, settled in the region.
These five groups were present when the first European explorers arrived, the southern Utah region was explored by the Spanish in 1540, led by Francisco Vásquez de Coronado, while looking for the legendary Cíbola. A group led by two Catholic priests—sometimes called the Dominguez-Escalante Expedition—left Santa Fe in 1776, hoping to find a route to the coast of California, the expedition traveled as far north as Utah Lake and encountered the native residents. The Spanish made further explorations in the region, but were not interested in colonizing the area because of its desert nature, in 1821, the year Mexico achieved its independence from Spain, the region became known as part of its territory of Alta California. European trappers and fur traders explored some areas of Utah in the early 19th century from Canada, the city of Provo, Utah was named for one, Étienne Provost, who visited the area in 1825. The city of Ogden, Utah was named after Peter Skene Ogden, in late 1824, Jim Bridger became the first known English-speaking person to sight the Great Salt Lake.
Due to the salinity of its waters, Bridger thought he had found the Pacific Ocean
Grand Staircase-Escalante National Monument
The Grand Staircase-Escalante National Monument is a U. S. National Monument protecting 1,880,461 acres of land in southern Utah. President Bill Clinton designated the area as a monument in 1996 using his authority under the Antiquities Act. Grand Staircase-Escalante encompasses the largest land area of all U. S. National Monuments, the Monument is managed by the Bureau of Land Management rather than the National Park Service. This was the first National Monument managed by the BLM, visitor centers are located in Cannonville, Big Water and Kanab. The Monument stretches from the towns of Big Water and Kanab, Utah on the southwest, to the towns of Escalante, encompassing 1.9 million acres, the Monument is slightly larger in area than the state of Delaware. The western part of the Monument is dominated by the Paunsaugunt Plateau and the Paria River and this section shows the geologic progression of the Grand Staircase. Features include the slot canyons of Bull Valley Gorge, Willis Creek, the center section is dominated by a single long ridge, called Kaiparowits Plateau from the west, and called Fifty-Mile Mountain when viewed from the east.
Fifty-Mile Mountain stretches southeast from the town of Escalante to the Colorado River in Glen Canyon, the eastern face of the mountain is a steep,2200 foot escarpment. The western side is a slope descending to the south. East of Fifty-Mile Mountain are the Canyons of the Escalante, the Monument is bounded by Glen Canyon National Recreation Area on the east and south. The popular hiking and canyoneering areas include the slot canyons of Peekaboo and Brimstone Canyons, the Devils Garden is located in this area. Access is via the Hole-in-the-Rock Road which extends southeast from the town of Escalante, the road was constructed to facilitate Mormon settlement of southeastern Utah, including the town of Bluff. The road is used by ranchers to access the flat desert at the base of Fifty Mile Mountain for grazing cattle. Since 2000, numerous fossils over 75 million years old have been found at Grand Staircase-Escalante. In 2002, a volunteer at the Monument discovered a 75-million-year-old dinosaur near the Arizona border, on October 3,2007, the dinosaurs name, Gryposaurus monumentensis was announced in the Zoological Journal of the Linnean Society. G.
monumentensis was at least 30 feet long and 10 feet tall, many of the specimens from the Kaiparowits Formation are reposited at the Natural History Museum of Utah in Salt Lake City. Two ceratopsid dinosaurs, discovered at the Monument, were introduced by the Utah Geological Survey in 2007 and they were uncovered in the Wahweap formation, which is just below the Kaiparowits formation where the duckbill was extracted. They lived about 80 million or 81 million years ago, the two fossils are called the Last Chance skull and the Nipple Butte skull
Utah State Route 95
State Route 95 or Bicentennial Highway is a state highway located in the southeast of the U. S. state of Utah. The highway is a road for tourism in Lake Powell and does not serve any cities. Although the highway has existed since the 1930s as a dirt road. The highway forms part of the Trail of the Ancients National Scenic Byway and it runs 121 miles west from the junction of U. S. Route 191, to the junction of SR-24 in the town of Hanksville. It passes through the community of Fry Canyon. Frys Canyon contains the gas station between Hanksville and Blanding. A seasonal gas station is operation at the Hite Marina area during the summer months, sR-95 was added to the state highway system in 1935 as a spur connecting SR-47 near Blanding with Natural Bridges National Monument. It was extended in 1949, crossing the Colorado River at Hite, except for a short piece near Blanding, the road remained unpaved through the 1960s. The first major realignment was approved in 1962 and completed in 1966, bypassing the old crossing at Hite, the highway was improved and paved in time for the U. S.
Bicentennial in 1976, and has since known as the Bicentennial Highway
Lake Powell is a reservoir on the Colorado River, straddling the border between Utah and Arizona. It is a vacation spot that around two million people visit every year. It is the second largest man-made reservoir by water capacity in the United States behind Lake Mead. Lake Powell was created by the flooding of Glen Canyon by the Glen Canyon Dam, which led to the creation of Glen Canyon National Recreation Area. The reservoir is named for explorer John Wesley Powell, a one-armed American Civil War veteran who explored the river via three wooden boats in 1869, in 1972, Glen Canyon National Recreation Area was established. It is public land managed by the National Park Service, and it lies in parts of Garfield and San Juan counties in southern Utah, and Coconino County in northern Arizona. The northern limits of the lake extend at least as far as the Hite Crossing Bridge, a map centered at the confluence of the Escalante River 37°17′22″N 110°52′20″W with the Colorado River gives a good view of the extent of the lake.
Lake Powell is a storage facility for the Upper Basin states of the Colorado River Compact. The Compact specifies that the Upper Basin states are to provide an annual flow of 7,500,000 acre feet to the Lower Basin states. In the 1940s and early 1950s, the U. S. Bureau of Reclamation planned to construct a series of Colorado River dams in the rugged Colorado Plateau province of Colorado and Arizona. Glen Canyon Dam was born of a controversial damsite the Bureau selected in Echo Park, by agreeing to a relocated damsite near Lees Ferry between Glen and Grand Canyons, Brower did not realize what he had gambled away. At the time, Brower had not actually been to Glen Canyon, when he saw Glen Canyon on a river trip, Brower discovered that it had the kind of scenic and wilderness qualities often associated with Americas national parks. Over 80 side canyons in the colorful Navajo Sandstone contained clear streams, abundant wildlife, natural bridges, by then, however, it was too late to stop the Bureau and its commissioner Floyd Dominy from building Glen Canyon Dam.
Brower believed the river should remain free, and would forever after consider the loss of Glen Canyon his lifes ultimate disappointment. Construction on Glen Canyon Dam began with a demolition blast keyed by the push of a button by President Dwight D. Eisenhower at his desk in the Oval Office on October 1,1956, the first blast started clearing tunnels for water diversion. On February 11,1959, water was diverted through the tunnels so dam construction could begin, that year, the bridge was completed, allowing trucks to deliver equipment and materials for the dam, and for the new town of Page, Arizona. Concrete placement started around the clock on June 17,1960, the last bucket of concrete was poured on September 13,1963. Over 5 million cubic yards of concrete make up Glen Canyon Dam, the Dam is 710 feet high, with the surface elevation of the water at full pool being approximately 3700 feet