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 and machine-building industries. Imported goods usually consist of metals, construction materials, petroleum products, the products of the machine building, light and food industries, also partially of grain shipments. Exports consist of timber, oil, iron ore, aluminium and coal. Locally, the railway mostly transports construction goods, coal, timber, petroleum and agricultural produce. The East Siberian Railway was awarded the Order of the Red Banner of Labour in 1976. During the construction of several sections of the East Siberian Railway, various scientific and technical achievements were widely used. The railway essentially became a test site for alternating current electrification. They tested and