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Tuesday, April 30, 2024

The Water Wisdom of the Mughals

Burhanpur town on the banks of the River Tapti in the foothills of the Satpura Range was the southern outpost of the Mughals. Consequently, it had a massive garrison of soldiers numbering two lakhs and a supporting civilian population of around thirty thousand in the early seventeenth century when the Mughals not only wanted to defend their territory against possible incursions from southern kingdoms but also had plans to expand further south. Providing safe drinking water to this huge population was a major concern of the Mughal administrators. They feared that the water of the River Tapti and its tributary Utavali may be poisoned by their enemies and so they preferred the use of ground water. However, wells themselves could not provide enough water and also it was laborious to draw water out of them for such a large population in those days when there were no mechanised pumps.
The Subedar or Governor of Burhanpur Abdul Rahim Khankhana commissioned a Persian geologist Tabukul Arj to devise a system that would be able to harvest the rain water falling on the Satpura ranges and bring them by gravity to the town in 1615. A very ingenious plan was drawn up wherein a few large tanks were constructed to harvest the rain water and recharge it into the ground. Finally a 3.5 km long tunnel about thirty feet below the ground level, lined with marble, was constructed just uphill of the town into which the water from the t Bhandaras seeped in through the ground.
There are 103 round wells that reach this tunnel from the top at intervals and provide access to it for cleaning it of any debris and sediments that might have accumulated. The water in the tunnel flows by gravity from the first well to the last well at the end of which there is a tank from which pipelines take the water to the town below. The wells are called kundis whereas the tunnel is called Khooni Bhandara possibly because of the slightly reddish colour of the water in it.
Currently about 0.15 million litres of water per day flows out of the tunnel.
What struck me most was the ingenuity of the Mughals in devising a system that first tapped the rain water by harvesting it and then used an underground tunnel to extract it and take it by gravity to the town. This was a necessity at the time because there were no mechanised pumps to do lift water from the underground aquifer at that time. This tunnel was dug by human labour obviously as there were no machines then and this adds to the uniqueness of the system. Water harvesting is the most sustainable means of water supply. The Asirgarh fort on a high hill nearby too has excellent water harvesting systems for its water supply.

 

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