Слайд 4THE TOM RIVER IS 827 KM LONG AND DRAINS A WATERSHED AREA

OF 62000KM.
Слайд 5Over 1000 industrial industrial plants and human settlements dischage their wastewaters into

the Tom River
Слайд 7The Tom River basin is situated in a southern part of West

Siberia.
Слайд 9The climate of this area is sharp continental with a long and

cold period.
Слайд 10 That gives the river a hydrologic regime with a very non-uniform

seasonable distribution of run-off:
during the period of spring flood about 70% of total run-off is released and in winter only about 5%.