World History
Hydraulic Engineering in Prehistoric Mexico. This article appeared in a recent issue of Scientific America. It is by S. Christopher Caran and James A. Neely. The full-text of the article is not available for free but digital access can be purchased via this link.
The article deals with ancient technology in North America. Three thousand years ago precursors of the Aztecs built the first large-scale water management systems in the New World. In Southern Mexico, farmers faced water shortages six months out of every year. To overcome this problem, the farmers developed ways to bring water to their crops. This included dams, wells, canals, aqueducts, and terraced wells.
Two of the more noted systems included a network of canals in the Tehuacán Valley and terraced gardens in the Valley of Oaxaca. This is just another example of how smart and resourceful ancient people could be. If they hadn't been so smart, we might not be here now.
From the site:
The prehistoric farmers of southern Mexico must have longed for a miracle. A tropical climate made their fertile valleys nearly ideal for planting, despite elevations approaching 2,000 meters, and heavy rains ensured bountiful crops during the six-month monsoon season. Under such favorable conditions, this region became the cradle of New World agriculture and the birthplace of corn. Yet these early agriculturalists faced one crucial limitation: during half the year, the weather was too dry for farming. With a year-round water supply, their hand-tilled fields might yield two or even three harvests annually. But how could the farmers get more water?
Their solution was not a miracle but a marvel of human ingenuity: large-scale engineering projects designed to store and transport water. From modest origins that left few traces, construction gradually progressed to a monumental scale. The Purrón Dam, for example, which was built in the Tehuacán Valley starting around 750 B.C., measured 400 meters long, 100 meters wide and nearly 25 meters high. Workers transported by hand, a few kilograms at a time, some 2.64 million cubic meters of earth. This dam probably remained the largest water retention structure in the Americas until the 18th century. Nearby, ancient engineers built thousands of kilometers of canals and aqueducts that predated the arrival of Europeans in Mexico by two millennia. They diverted water from springs and streams, conveying it across drainage divides, around canyons and down steep slopes. Other resourceful inventions collected rainwater from buildings and plazas.
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World History
Hydraulic Engineering in Prehistoric Mexico
Hydraulic Engineering in Prehistoric Mexico. This article appeared in a recent issue of Scientific America. It is by S. Christopher Caran and James A. Neely. The full-text of the article is not available for free but digital access can be purchased via this link.
The article deals with ancient technology in North America. Three thousand years ago precursors of the Aztecs built the first large-scale water management systems in the New World. In Southern Mexico, farmers faced water shortages six months out of every year. To overcome this problem, the farmers developed ways to bring water to their crops. This included dams, wells, canals, aqueducts, and terraced wells.
Two of the more noted systems included a network of canals in the Tehuacán Valley and terraced gardens in the Valley of Oaxaca. This is just another example of how smart and resourceful ancient people could be. If they hadn't been so smart, we might not be here now.
From the site:
The prehistoric farmers of southern Mexico must have longed for a miracle. A tropical climate made their fertile valleys nearly ideal for planting, despite elevations approaching 2,000 meters, and heavy rains ensured bountiful crops during the six-month monsoon season. Under such favorable conditions, this region became the cradle of New World agriculture and the birthplace of corn. Yet these early agriculturalists faced one crucial limitation: during half the year, the weather was too dry for farming. With a year-round water supply, their hand-tilled fields might yield two or even three harvests annually. But how could the farmers get more water?
Their solution was not a miracle but a marvel of human ingenuity: large-scale engineering projects designed to store and transport water. From modest origins that left few traces, construction gradually progressed to a monumental scale. The Purrón Dam, for example, which was built in the Tehuacán Valley starting around 750 B.C., measured 400 meters long, 100 meters wide and nearly 25 meters high. Workers transported by hand, a few kilograms at a time, some 2.64 million cubic meters of earth. This dam probably remained the largest water retention structure in the Americas until the 18th century. Nearby, ancient engineers built thousands of kilometers of canals and aqueducts that predated the arrival of Europeans in Mexico by two millennia. They diverted water from springs and streams, conveying it across drainage divides, around canyons and down steep slopes. Other resourceful inventions collected rainwater from buildings and plazas.
- Basin Of Mexico
Like a giant bowl gouged out of the Earth, ringed by mountains and active volcanoes, the Basin of Mexico, the site of contemporary Mexico City, is one of the world’s most ancient and important cradles of human civilization. Conventionally called...
- Did Ancient Man Start Global Warming?
New research finds that ancient (or in this case pre-historic) man may have helped to jump start global warming. Details can be found in the CNN article Study: Global warming sparked by ancient farming methods by Shelby Lin Erdman. Erdman wrote, "The...
- Beneath The Metropolis: The Secret Lives Of Cities
I have always been fascinated by what lies beneath. I love caves. I have also been pleased on several occasions to have had the opportunity to explore the tunnel system beneath my campus. And during my Dungeons & Dragons days, my favorite adventures...
- The Aztecs
The Aztecs - A Spanish and English presentation about the Aztec Empire and its fall, and the everyday life and culture of its people. Also provides a selection of games and quizzes, images, and maps. From the site: Around 700 years ago ...........
- Teaching About The Louisiana Purchase.
Teaching about the Louisiana Purchase. The Louisiana Purchase was one of the most important land acquisitions in history. This article looks at the history of this purchase and methods that teachers can instruct on it. From the site: The year 2003 marks...