Mea Culpa. My comment on Baikal was utter bollocks. I don't know what I was thinking of when I wrote it. The problem, as @terminal noted, was that the main inflow to Baikal is in the south, through the Selenga Delta, and the Irkutsk hydro power plant is on the Angara that drains from Lake Baikal to the south west. Any pipeline from China will cut through Mongolia and the Selenga River catchment that feeds about 50% of the inflow into Baikal, and which the Mongolians are looking to put a hydro electric plant on. This will potentially reduce the inflow, (and Baikal had a record low in 2015), and a Selenga tributary, the Orkhon, is also being tapped by the Mongolians to supply mining works in the Gobi desert. Any proposed Chinese extraction will take out some more. The Selenga is already under stress, but the driving of a major pipeline through the catchment will probably do it no good at all, and that damage would feed through into Baikal. Should the water levels in Baikal fall below a certain critical threshold, then the Russian Irkutsk Hydro plant will become unworkable, unless over extraction is authorised, which would damage the local economy and ecology.