On Oct 29, 2018, another landslide dam blocked the path of Yarlung Tsangpo Dam, reportedly at the same location as the Oct 17,2018 landslide dam[i]. It breached on Oct 31, without any reported major calamity, but these repeated occurrences, twice in two weeks and third time in ten months (if we include Dec 2017[ii] landslides) raises a lot of questions. The silence of government of India institutions about the possible causes or other analysis, including by Central Water Commission, Union Ministry of Water Resources, National Disaster Management Authority or even National Remote Sensing Agency has, as expected, raised questions and speculations in Arunachal Pradesh. Continue reading “Another Landslide Dam on Yarlung Tsangpo raises more questions”
The current ongoing episode of Muddy Siang River water in Arunachal Pradesh is due to landslides in the upstream Tibet, triggered by the earthquakes starting on Nov 17, 2017 or possibly earlier. This is revealed by the satellite pictures and work of two researchers, first published in Arunachal Times on Dec 21, 2017[i]. These landslides are partly blocking the Siang flow and could lead to massive floods in the downstream Arunachal Pradesh and Assam any day.
A similar event in year 2000 led to sudden, massive floods in Siang River in Arunachal Pradesh on June 1, 2000. That episode, like the current one, started about 53 days before the floods, on April 9, 2000 due to landslides along a tributary of Yarlung Tsangpo, as Siang is known in Tibet. Continue reading “Muddy Siang is sign of danger ahead, wake up call for Indian authorities”
Tamirabarani teaches: Saving tiger is saving river After Kalakkad-Mundanthurai was declared tiger reserve in 1992, Tamirabarani river has regained its perennial status. Though shorter than Cauvery and Vaigai, Tamirabarani has always held a special place in the state. It started turning dry for four months every year. People of Tirunelveli and Tuticorin thought their river too was going the way of other state rivers. But a move to save the tiger inadvertently became a save the-river policy. The Union ministry of environment and forests declared the Kalakkad – Mundanthurai area as a tiger reserve in 1992. In three years, there was a noticeable change. A study on water inflow into the Karayar river, a tributary, inside the reserve was taken up. Records show that from 1946 till 1990, the river received only 13,000 cubic feet of water annually. After the area was declared as a tiger reserve, the inflow increased to 23,000 cubic feet.