apparently it's only chest level deep!! I'm confuse now.... I just read another article which I think says that they were not diving..... I will try to search for that article agan....
From what I can gather...../
1) The 6 were tied together along 1 rope line with a water bouy at the front with the lead guy. All 6 were spread out in one straight line 2-4 meters apart.
2) All had life jackets on. No diving gear. No helmets. No head lamps.
3) They were walking in the river bed with the water level being up to their waist and then higher up to their chest as they moved closer towards the dam
4) They were being directed by a someone standing above them and told to keep moving forward
5) The lead guy gets too close to the dam and gets sucked into the vortex and then drags the rest in as well one by one as the guys on shore struggle to pull all 6 out due to the force and weight of the vortex/weight of the 6 people tied together. All are spun around like in a washing machine under water and drown.
6) They are eventually pulled back to shore and cpr conducted but medical teams are unable to revive them.
7) Not sure if the medical team or rescue teams had a DEFIB unit available.
8) Op was conducted at night
If you look at the photo shared, I have circled the area where the drownings occured and where they were sucked into the vortex one by one. They were checking that area to see if the body was in that area and came from down river walking up river. The mistake they made also was to tie the divers from down river all together using 1 line instead of tying them separately and reducing the number of people in the water to 2 perhaps and both having separate rescue lines (or no rescue lines at all).
They should have done the search in the day time,