Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over 100 lives. In bills passed by Congress during its construction, it was referred to as the Hoover Dam, after President Herbert Hoover, but was named the Boulder Dam by the Roosevelt administration. In 1947, the name Hoover Dam was restored by Congress.
Irrigation is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost, suppress weed growth in grain fields, and prevent soil consolidation. It is also used to cool livestock, reduce dust, dispose of sewage, and support mining operations. Drainage, which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation.
The following outline is provided as an overview of and topical guide to agriculture:
The Reclamation Act of 1902 is a United States federal law that funded irrigation projects for the arid lands of 17 states in the American West.
The Bureau of Reclamation, formerly the United States Reclamation Service, is a federal agency under the U.S. Department of the Interior, which oversees water resource management, specifically as it applies to the oversight and operation of the diversion, delivery, and storage projects that it has built throughout the western United States for irrigation, water supply, and attendant hydroelectric power generation. It is currently the U.S.'s largest wholesaler of water, bringing water to more than 31 million people, and providing one in five Western farmers with irrigation water for 10 million acres of farmland, which produce 60% of the nation's vegetables and 25% of its fruits and nuts. The Bureau is also the second largest producer of hydroelectric power in the western U.S.
Colorado State University is a public land-grant research university in Fort Collins, Colorado, United States. It is the flagship university of the Colorado State University System. Colorado State University is classified among "R1: Doctoral Universities – Very high research activity". It was founded in 1870 as Colorado Agricultural College and assumed its current name in 1957.
In engineering, macro-engineering is the implementation of large-scale design projects. It can be seen as a branch of civil engineering or structural engineering applied on a large landmass. In particular, macro-engineering is the process of marshaling and managing of resources and technology on a large scale to carry out complex tasks that last over a long period. In contrast to conventional engineering projects, macro-engineering projects are multidisciplinary, involving collaboration from all fields of study. Because of the size of macro-projects they are usually international.
Elwood Mead was an American professor, government official, and engineer known for heading the United States Bureau of Reclamation (USBR) from 1924 until his death in 1936. During his tenure, he oversaw some of the most complex projects the Bureau of Reclamation has undertaken. These included the Hoover, Grand Coulee and Owyhee dams.
Desert farming is the practice of developing agriculture in deserts. As agriculture depends upon irrigation and water supply, farming in arid regions where water is scarce is a challenge. However, desert farming has been practiced by humans for thousands of years. In the Negev, there is evidence to suggest agriculture as far back as 5000 BC. Today, the Imperial Valley in southern California, Australia, Saudi Arabia, and Israel are examples of modern desert agriculture. Water efficiency has been important to the growth of desert agriculture. Water reuse, desalination, and drip irrigation are all modern ways that regions and countries have expanded their agriculture despite being in an arid climate.
Sanitary engineering, also known as public health engineering or wastewater engineering, is the application of engineering methods to improve sanitation of human communities, primarily by providing the removal and disposal of human waste, and in addition to the supply of safe potable water. Traditionally a branch of civil engineering and now a subset of environmental engineering, in the mid-19th century, the discipline concentrated on the reduction of disease, then thought to be caused by miasma. This was accomplished mainly by the collection and segregation of sewerage flow in London specifically, and Great Britain generally. These and later regulatory improvements were reported in the United States as early as 1865.
A seawater greenhouse is a greenhouse structure that enables the growth of crops and the production of fresh water in arid regions. Arid regions constitute about one third of the Earth's land area. Seawater greenhouse technology aims to mitigate issues such as global water scarcity, peak water and soil becoming salted. The system uses seawater and solar energy, and has a similar structure to the pad-and-fan greenhouse, but with additional evaporators and condensers. The seawater is pumped into the greenhouse to create a cool and humid environment, the optimal conditions for the cultivation of temperate crops. The freshwater is produced in a condensed state created by the solar desalination principle, which removes salt and impurities. Finally, the remaining humidified air is expelled from the greenhouse and used to improve growing conditions for outdoor plants.
California's interconnected water system serves almost 40 million people and irrigates over 5,680,000 acres (2,300,000 ha) of farmland. As the world's largest, most productive, and potentially most controversial water system, it manages over 40 million acre-feet (49 km3) of water per year. Use of available water averages 50% environmental, 40% agricultural and 10% urban, though this varies considerably by region and between wet and dry years. In wet years, "environmental" water averages 61%, while in dry years it averages 41%, and can be even lower in critically dry years.
Agricultural engineering, also known as agricultural and biosystems engineering, is the field of study and application of engineering science and designs principles for agriculture purposes, combining the various disciplines of mechanical, civil, electrical, food science, environmental, software, and chemical engineering to improve the efficiency of farms and agribusiness enterprises as well as to ensure sustainability of natural and renewable resources.
Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life. The term "desert greening" is intended to apply to both cold and hot arid and semi-arid deserts. It does not apply to ice capped or permafrost regions. It pertains to roughly 32 million square kilometres of land. Deserts span all seven continents of the Earth and make up nearly a fifth of the Earth's landmass, areas that recently have been increasing in size.
John Lucian Savage was an American civil engineer. Among the 60 major dams he supervised the designs for, he is best known for the Hoover Dam, Shasta Dam, Parker Dam and Grand Coulee Dam in the United States along with surveying for the future Three Gorges Dam in China. He was a member of the National Academy of Sciences and the recipient of numerous awards including the John Fritz Medal.
The Yuma Project is a U.S. Bureau of Reclamation project built to irrigate over 68,000 acres (280 km2) of land in Yuma County, Arizona and parts of Imperial County, California. The project is designed to exploit year-round farming conditions and water from the Colorado River. It consists of the Laguna Diversion Dam, pumping plants, a power plant, a 53-mile (85 km) system of canals, 218 miles (351 km) of lateral canals, levees and drains. The project began in 1903 and the majority of the work was completed by 1915. It was the first dam and reclamation project on the Colorado River and workers had to overcome many natural and logistical obstacles to build and maintain it. The Laguna Diversion Dam was replaced by the Imperial Dam as the Project's water source between 1941 and 1948. Today, it serves 275 farms and over 94,000 people.
Louis Rea "Doug" Douglass was an American civil engineer. He spent more than 20 years with the United States Bureau of Reclamation and was in charge of Hoover Dam and the surrounding park land for four years.
Louis George Carpenter, was a college Professor and later the Dean of Engineering & Physics at Colorado State University formerly known as the Colorado Agricultural College. He was also a mathematician and an irrigation and consulting engineer.
Dorolyn Lines was an American engineer known for her design of canal and irrigation systems in California, Yuma, the Missouri River basin, the Columbia River basin, the Lower Rio Grande, and Oregon. She was honored with a Certificate of Merit from the Bureau of Reclamation in 1966, and was remembered for her work in raising the status of women engineers.
The IBTS greenhouse is a biotectural, urban development project suited for hot arid deserts. It was part of the Egyptian strategy for the afforestation of desert lands from 2011 until spring of 2015, when geopolitical changes like the Islamic State of Iraq and the Levant – Sinai Province in Egypt forced the project to a halt. The project begun in spring 2007 as an academic study in urban development and desert greening. It was further developed by N. Berdellé and D. Voelker as a private project until 2011. Afterwards LivingDesert Group including Prof. Abdel Ghany El Gindy and Dr. Mosaad Kotb from the Central Laboratory for Agricultural Climate in Egypt, Forestry Scientist Hany El-Kateb, Agroecologist Wil van Eijsden and permaculturist Sepp Holzer was created to introduce the finished project in Egypt.
