Every year, when snow in the Rocky Mountains of the United States melted, the Colorado River overflowed, endangering the area’s crops. In addition to preventing flooding, a dam would expand irrigation in arid areas, supply water to other communities in Los Angeles and Southern California, produce electricity… With this idea, the Hoover commitment was signed in 1922 to make dam.
The prey was initially named Boulder, but in the negotiations was Trade Secretary Herbert Hoover, who would later be President of the United States, who finally, like the convention, called Hoover.
President Coolidge, six years later, in 1928, legally accepted the project, but the official authorization to start construction works was obtained in 1930, presided over by Hoover, ignoring the crisis that broke out the previous year or, in a way, under the excuse of the Great Depression, arguing that these works would alleviate the situation. Thus, in 1933 another giant hydraulic project was launched and the Tennessee Valley Authority was created to exploit the waters of the river of the same name.
Boccaletti considers that the history of water is not technological, but political, although the model that has spread in the twentieth century has a technological base.
The pharaonic work of the Hoover dam was completed in 1936 with 3.33 million m³ of concrete and 49 million dollars (approximately 900 million today).
But perhaps the adjective “Pharaonic” is not the most appropriate to speak of the Hoover dam; although the Egyptians used the fluctuations of the Nile River, current water management policies have their origin in ancient Rome. This is what Water says by researcher Giulio Boccaletti. A Biography (Water. A biography) in a paper that gathers the history of water management.
Boccaletti considers that the history of water is not technological, but political, although the model that has spread in the twentieth century has a technological base. This model, based on major engineering projects, was born in the United States through Hoover and Tennessee and spread throughout the world. From Boccalet it is known as the “hydraulic century” in the last hundred years.
He believes that this paradigm is about to run out and that the future model can come from China. The researcher states that the water management system remains unknown, but it is clear that the path opened 100 years ago by the Hoover dam is not sustainable.
Archaeologists have discovered more than 600 engraved stones at the Vasagård site in Denmark. According to the results of the data, dating back to 4,900 years ago, it is also known that a violent eruption of a volcano occurred in Alaska at that time. The effects of this... [+]
Vietnam, February 7, 1965. The U.S. Air Force first used napalma against the civilian population. It was not the first time that gelatinous gasoline was used. It began to be launched with bombs during World War II and, in Vietnam itself, it was used during the Indochina War in... [+]
I just saw a series from another sad detective. All the plots take place on a remote island in Scotland. You know how these fictions work: many dead, ordinary people but not so many, and the dark green landscape. This time it reminded me of a trip I made to the Scottish... [+]
Japan, 8th century. In the middle of the Nara Era they began to use the term furoshiki, but until the Edo Era (XVII-XIX. the 20th century) did not spread. Furoshiki is the art of collecting objects in ovens, but its etymology makes its origin clear: furo means bath and shiki... [+]
In an Egyptian mummy of 3,300 years ago, traces of Yersinia pestis, the bacterium that caused the Justinian plague in the 6th century and the Black Plague in the 14th century, have just been found.
Experts until now believed that at that time the plague had spread only in... [+]