Colorado River Essays - Imperial Valley, Colorado River, Free Essays

Colorado River Essays - Imperial Valley, Colorado River, Free Essays Colorado River Geography Colorado River Geographers can tell you that the one thing that most rivers and their adjacent flood plains in the world have in common is that they have rich histories associated with human settlement and development. This especially true in arid regions which are very dependent upon water. Two excellent examples are the Nile and the Tigris-Euphrates rivers which show use the relationship between rivers and concentrations of people. However, the Colorado River is not such a good example along most segments of its course. There is no continuous transportation system that parallels the rivers course, and settlements are clustered. The rugged terrain and entrenched river channels are the major reasons for sparse human settlement. We ask ourselves, did the Colorado River help or hinder settlement in the Western United States? As settlers began to move westward, the Southwest was considered to be a place to avoid. Few considered it a place to traverse, to spread Christianity, and a possible source of furs or mineral wealth. Finding a reliable or accessible water source, and timber for building was difficult to find. There was a lack of land that could be irrigated easily. By the turn of the century, most present day cities and towns were already established. Trails, roads, and railroads linked several areas with neighboring regions. Although the Colorado River drainage system was still not integrated. In the mid 1900s many dams had been built to harness and use the water. A new phase of development occurred at the end of the second World War. There was a large emphasis on recreation, tourism, and environmental preservation. The terrain of the Colorado River is very unique. It consists of Wet Upper Slopes, Irregular Transition Plains and Hills, Deep Canyonlands, and the Dry Lower Plains. Wet Upper Slopes: Consist of numerous streams that feed into the Colorado River from stream cut canyons, small flat floored valleys often occupied by alpine lakes and adjacent steep walled mountain peaks. These areas are heavily forested and contain swiftly flowing streams, rapids, and waterfalls. These areas have little commercial value except as watershed, wildlife habitat, forest land, and destinations for hikers, fishermen, and mountaineers. Irregular Transition Plains and Hills: These areas are favorable for traditional economic development. It consists of river valleys with adequate flat land to support farms and ranches. Due to the rolling hills, low plateaus, and mountain slopes, livestock grazing is common. The largest cities of the whole drainage system are found here. Deep Canyonlands: Definitely the most spectacular and least developed area along the Colorado River. These deep gorges are primarily covered by horizontal layers of sedimentary rocks, of which sand stone is the most abundant. The Grand Canyon does not only display spectacular beauty, but numerous other features such as mesas, buttes, spires, balancing rocks, natural arches and bridges, sand dunes, massive sandstone walls, and pottholed cliffs. Dry Lower Plains: These consist of the arid desert areas. These areas encounter hot summers and mild winters. Early settlement was limited because most of the land next to the river was not well suited for irrigation agriculture. The area is characterized by limited flat land, poor soils, poor drainage, and too hot of conditions for most traditional crops. The Colorado River was first navigated by John Wesley Powell, in his 1869 exploration through the Marble and Grand Canyons. The Colorado River begins high in the Colorado Rocky Mountains. The water begins from melting snow and rain, and is then supplemented by the Gunnison, Green, San Juan, Little Colorado, Virgin, and Gila Rivers. Before any dams were built, the Colorado River carried 380,000 million tons of silt to the Sea of Cortez. Along its path, it carves out the Marble, Grand, Black, Boulder, and Topok Canyons. The Grand Canyon being the most popular, which is visited by numerous tourists every year, plays a large role in western tourism. The Grand Canyon is in fact one of the Worlds Seven Wonders. The Colorado Basin covers 240,000 square miles of drainage area. At certain points along the river, it turns into a raging, muddy, rapid covered mass of water. Unlike other rivers, the Colorado River doesnt meet the ocean in a grand way, but rather in a small trickle. Almost all of the water that passes down the river is spoken for. It passes through seven Western States, travels 1,700 miles, and descends more than 14,000 feet before emptying into the sea, with more silt and salinity than any river in North America. A river not used for commerce, or any degree of navigation other than recreational, and virtually ignored until

An Overview of Historic Preservation

An Overview of Historic Preservation Historic preservation is a movement in planning designed to conserve old buildings and areas in an effort to tie a places history to its population and culture. It is also an essential component to green building in that it reuses structures that are already present as opposed to new construction. Additionally, historic preservation can help a city become more competitive because historic, unique buildings give areas more prominence when compared to the homogeneous skyscrapers that dominate in many large cities. It is important to note, however, that historic preservation is a term used only in the United States and it did not gain prominence until the 1960s when it started in response to urban renewal, an earlier failed planning movement. Other English-speaking countries often use the term heritage conservation to refer to the same process while architectural conservation refers just to the preservation of buildings. Other terms include urban conservation, landscape preservation, built environment/heritage conservation, and immovable object conservation. History of Historic Preservation Although the actual term historic preservation did not become popular until the 1960s, the act of conserving historic places dates back to the mid-17th Century. At this time, wealthy Englishmen consistently collected historic artifacts, leading to their preservation. It was not until 1913 though that historic preservation became a part of English law. In that year the Ancient Monuments Act in the United Kingdom officially preserved structures there with historical interest. In 1944, preservation became a major component to planning in the U.K. when the Town and Country Planning Act put the preservation of historic places into the forefront of laws and approval of planning projects. In 1990, another Town and Country Planning Act passed and the protection of public buildings grew even more. In the United States, the Association for the Preservation of Virginia Antiquities was founded in 1889 in Richmond, Virginia as the first state historic preservation group in the country. From there, other areas followed suit and in 1930, Simons and Lapham, an architectural firm, helped created the first historic preservation law in South Carolina. Shortly thereafter, the French Quarter in New Orleans, Louisiana became the second area to fall under a new preservation law. The preservation of historic places then hit the national scene in 1949 when the U.S. National Trust for Historic Preservation developed a specific set of goals for preservation. The organization’s mission statement claimed that it aimed to protect structures providing leadership and education and that it also wanted to save America’s diverse historic places and revitalize [its] communities. Historic preservation then became a part of the curriculum at many universities in the U.S. and the world that taught urban planning. In the U.S., historic preservation became a large component in the planning profession in the 1960s after urban renewal threatened to destroy many of the nation’s most historic places in major cities like Boston, Massachusetts and Baltimore, Maryland. Divisions of Historic Places Within planning, there are three main divisions of historic areas. The first and most important to planning is the historic district. In the United States, this is a group of buildings, properties, and/or other sites that are said to be historically significant and in need of protection/redevelopment. Outside of the U.S., similar places are often called conservation areas. This is a common term used in Canada, India, New Zealand, and the U.K. to designate places with historical natural features, cultural areas, or animals to be protected. Historic parks are the second division of areas within historic preservation while historic landscapes are the third. Significance in Planning Historic preservation is important to urban planning because it represents an effort to conserve old building styles. In doing so, it forces planners to identify and work around the protected places. This usually means the insides of buildings are renovated for prestigious office, retail, or residential space, which can result in a competitive downtown as rents are normally high in these areas because they are popular gathering places. In addition, historic preservation also results in a less homogenized downtown landscape. In many new cities, the skyline is dominated by glass, steel, and concrete skyscrapers. Older cities that have had their historic buildings preserved may have these but they also have interesting older buildings. For example in Boston, there are new skyscrapers, but the renovated Faneuil Hall shows the importance of the areas history and also serves as a meeting place for the citys population. This represents a good combination of the new and old but also shows one of the main goals of historic preservation. Criticisms of Historic Preservation Like many movements in planning and urban design, historic preservation has had a number of criticisms. The largest is the cost. While it might not be more expensive to renovate old buildings instead of building new, the historic buildings are often smaller and therefore cannot accommodate as many businesses or people. This raises rents and forces lower income uses to relocate. In addition, critics say the popular style of newer high rise buildings can cause the smaller, old buildings to become dwarfed and undesirable. Despite these criticisms, historic preservation has been an important part of urban planning. As such, many cities around the world today were able to retain their historic buildings so future generations can see what cities may have looked like in the past and recognize that times culture through its architecture.