: IOP Conference Series: Earth and Environmental Science. XIX International Scientific Symposium in honor of Academician M.A. Usov "Problems of Geology and Subsurface Development" (Tomsk, Russia, 6-10 April 2015)
Chemical and microbiological composition of the Mid-Ob' and its feeders' waters has been studied. Swampiness of the area is the cause of significant organic and biogenic substance content in streams, and it is also responsible for a large variety of organotrophic microflora. Microbiological composition of studied streams characterizes them as contaminated. Settlements are the main sources of the investigated area water pollution.
