Delhi · Yamuna River

Making Yamuna Flow Again

Guest Blog by Manoj Misra

It is no secret that the master key to Yamuna rejuvenation or for that matter any other perennial river is to make it flow as close to its natural flow pattern as possible. How to go about it is no rocket science but is no easy task either for we humans have burdened them with so many of our selfish stakes.

What flows in a river is not just water, but water enriched with energy, minerals, sediments, detritus and life, macro and microscopic plants and animals. It’s only such flow that enables and has enabled rivers over the millennia to fulfill various ecological (& social) functions like erosion and deposition of earth, meander and form floodplains, feed aquifers to replenish the ground water, host aquatic and riparian life forms, connect with the floodplain and its water bodies and complete the water cycle. (Feature image above: Dead Yamuna river at Panipat (Pic by Bhim SIngh Rawat))

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Yamuna River

Aug 2019 Yamuna Flood: Floodplain Encroachments Exposed Again

On August 21, 2019, the first big flood spell of monsoon season 2019 has passed through Delhi. The river swelled to cross first warning level 204.00 metre and then danger level 204.83 metre at Old Railway Bridge (ORB) Delhi, finally receding from 206.6 metre which is 0.89 meter short of 207.49 Highest Flood Level (HFL) set in 1978.

The delayed and much awaited flood spell hit the city after highest ever recorded discharge of 8.28 lakh cusec water for two hours from Hathini Kund Barrage (HKB), Yamuna Nagar in Haryana on August 18, 2019 at 05:00 pm and 6:00 pm. The highest since the commissioning of HKB in 2000. The water release this year has also surpassed the discharge of 7.09 lakh cusec the previous highest discharge recorded at Taje Wala Barrage (TWB) during the highest flood recorded in River Yamuna in September 1978. The British era TWB barrage, some 6 kilometre upstream of HKB was washed away in 2010 floods.  

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Urban Rivers · Yamuna River

Abuse of Remaining Yamuna River Floodplain in Delhi Continues

The stretch of Yamuna River & its floodplain lying between Palla and Wazirabad Barrage in Delhi is still in reasonably good state. Though bisected by an embankment, the floodplain is free of too many recent major encroachments. The River keeps meandering between physical boundaries of Delhi and Gaziabad district of Uttar Pradesh on the other side. The average width of floodplain from embankment to embankment is 2 kilometres. The width of active river current varies from 200-300 metres.

Most parts of the floodplain on both sides of this embankment are under agriculture. The crops grown here includes paddy, vegetables and floriculture as cash crops apart from wheat, traditional riverbed crops of melons, cucumber, tomato and bottle guards etc. Use of chemicals is also growing. There is not much information available about the impact of chemical farming on floodplain and river eco system.

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