Jaya Ganga: The Engineering Marvel of the Kala Oya Valley-by Michael Roberts Source:Thuppahis M. Asoka T. De Silva, in The Ceylankan, Journal 103 Vol 26/3, August 2023 Introduction: The first ancient historical record of any type of irrigation work is accredited to an inscription left by King Eannadu of Shirpurla in Southern Baby- lonia, in the ancient Kingdom of Mesopotamia, who had ruled in 4000 BC, and who mentions his construction work of several canals, one of them being known as Lummadimshar, at the side of which he made a reservoir, the first ever on record. Although the contribution of the migrant Aryans to the Indus Valley civilization has been considered negligible, it is conjectured that they did contribute considerably to the natural aspect of this cultural growth, as there seems to be valid reasons to believe that it was the Aryans who introduced the chariot, the horse and the plough, the ...
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Glimpses of Kala Oya Estuary – April 2022 The Kala Oya, 145 Km in length, is the third longest river in Sri Lanka. The river basin 2,873 sq Km in extent is home to a population of over 400,000. The catchment area of the river which is 1,800 sq Km receives around 3,200 million cubic metres of rain per year out of which around 5 percent reaches the sea. The estuary of the Kala Oya is a bay estuary, as the main stream of the Kala Oya and its tributaries discharge freshwater into the Dutch Bay before entering the sea. The estuarine area includes the brackish water areas of Kala Oya, Dutch Bay and the Puttalam Estuary. The amount of freshwater received is controlled by the water retention capacities of the tank system within the Kala Oya basin. Kala Oya estuary harbours the largest tract of intact riverine mangroves in ...
