The Molchanka’s waters have been this strange hue for a week, and now feared pollution threatens drinking supplies in city of Tyumen.
A medical rescue flight to Thailand by the Emergencies Ministry brought home four Russian men to the Siberian city of Tyumen on Sunday.
Flights late on Thursday and on Friday suffered disruption due to smog caused by blazes in dry woodland made vulnerable by the current heat wave.
Blaze and gas explosion near Tyumen kills five children aged under nine years of age.
People feel better about themselves and their lives, defying the international stereotype of Siberia.
Plane schedules disrupted, residents warned to stay indoors, sailors had to use GPS to get back to land because of thick smoke fumes from raging forest fires.
Quality of life in booming oil capital Tyumen is better than that in Moscow or St Petersburg, says financial survey.