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The islands have a humid tropical climate. Rainfall averages between 3000 and 5000 mm annually at most sea-level stations. There is little seasonal variation in temperature, with seasonal variation in rainfall depending on the prevailing winds. The southeast trade winds are active from about March to October when the sun is north of the equator ...
The Aflaj Irrigation Systems of Oman are ancient water channels from 500 AD located in the regions of Dakhiliyah, Sharqiyah and Batinah. However, they represent a type of irrigation system as old as 5,000 years in the region named as qanat or kariz as originally named in Persia .
Rather, irrigation was the responsibility of local farmers. However, the earliest and most famous reference to irrigation in Egyptian archaeology has been found on the mace head of the Scorpion King, which has been roughly dated to about 3100 BC. The mace head depicts the king cutting into a ditch that is part of a grid of basin irrigation.
The irrigation system consists of three main constructions that work in harmony with one another to ensure against flooding and keep the fields well supplied with water: The Yuzui or Fish Mouth Levee [17] (Chinese:鱼嘴), named for its conical head that is said to resemble the mouth of a fish, is the key part of the construction.
Rainbird, colloquial name given to various birds thought to sing or come before rain, including the European green woodpecker, Jamaican lizard cuckoo, Jacobin cuckoo, Pacific koel, channel-billed cuckoo, Burchell's coucal and black-faced cuckoo-shrike, as well as certain swifts whose movements are thought to signal the coming of rain
Nadi (small johad) in Laporiya village of Rajasthan . Johad at Rithal village of Rohtak district of Haryana. A johad, also known as a pokhar or a percolation pond, is a community-owned traditional harvested rainwater storage wetland principally used for effectively harnessing water resources in the states of Haryana, Rajasthan, Punjab, Delhi and western Uttar Pradesh of North India, that ...