12 November 2018
A dangerous, valley-blocking landslide in Jomda County, Tibet
More than 25,000 people have been evacuated as the water levels continue to rise in a landslide-formed barrier lake in Tibet Autonomous Region, local authorities said Sunday. The municipal government of Changdu in Tibet said the water level has risen 57.44 meters with an estimated 469 million cubic meters of water storage as of 9 a.m. on Sunday. As of Saturday, 42 temporary settlements, equipped with basic living necessities, have been set up for relocated villagers, with medical teams stationed near the settlements.
I reported on this landslide almost a fortnight ago. It is now clear that a second very major failure has occurred at this site, blocking the valley completely. This Planet Labs image, collected today (12th November 2018 at 03:40 am UT), shows the scale of the landslide and of the blocked valley:-
This Planet Labs image, collected on 10th November, shows the scale of the lake that has developed:-
Whilst this image shows the scale of the threat to the town of Bolo, upstream from the dame (the location can be seen in the image above):-
This looks to be a dangerous situation that needs very careful management. Some reports suggest that overtopping is expected today (12th November).