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→Early Canals
==Early Canals==
The earliest water technologies are likely to have been simple ditches or cuts made to irrigate fields. In the Near East, irrigation likely began soon after agriculture began to be developed. Most likely these types of irrigation canals would be too small or small in scale to leave any major archaeological remains. Evidence of terrace agriculture from the Neolithic, however, suggests that water captured from higher ground was beginning to be transferred to lower areas, including possibly using canals to move water(Figure 1). In China, similar Neolithic evidence has been found, showing that early villages had sometimes a relatively complex network of canals near village fields, where even field systems have been partially preserved.
Wells would have been also constructed for early villages. In particular, many early villages were located on hills or higher ground, which allowed them to be better drained and avoid flooding in the wet seasons. However, this created the problem of easily accessing water. This led to the development of wells, as water underneath these hilly areas could be easily accessed.
[[File:Yemen landscape 05.jpg|thumbnail|Figure 1. Example of terraces in Arabia, perhaps similar to those developed already by the Neolithic]]
==Early Historical Societies==
