East Siberian Sea runoff into the East Siberian Sea is relatively small at about 250 km/year that makes only 10% of the total runoff in all the Arctic seas of Russia. The largest contribution is from the Kolyma River at 132 km, followed by the Indigirka River at 59 km. Most runoff (90%) occurs in summer; it is concentrated near the coast, owing to the weak river currents, and therefore does not significantly affect the sea hydrology. The water exchange between the neighboring seas is as follows. The annual outflow to the Laptev Sea, Chukchi Sea and Arctic Ocean is 3,240, 6,600 and
East Siberian Railway was ; number of employees – 46,233 (61,418 in 2005); net weight hauled – 76 million tonnes (75.934 million in 2005); long-distance passenger traffic – 3.6 million people (4.838 million in 2005); suburban traffic – 29 million people (26.225 million in 2005). Annual cargo turnover is 278 million tonnes. The East Siberian Railway consists of four divisions, namely the Irkutsk Railway Division, Severobaikalsk Railway Division, Taishet Railway Division, and Ulan-Ude Railway Division. The railway connects the regions of East Siberia, Transbaikal, and Russian Far East with the rest of the railroad network nationwide. The East Siberian Railway services major industrial