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 perfected the design of alternating current locomotives, overhead catenary system, means of communication, signaling, centralised traffic control and the automatic block system, all of which would later be introduced on other railways in one way or another. 97% of the traffic along the East Siberian Railway is done by means of electric traction. The East Siberian Railway consists of several sections, one of which is the Circum-Baikal Railway – a monument to industrial architecture of federal importance. It stretches for over from the Baikal railway station to the Kultuka railway station. The uniqueness of this wonder of engineering is that