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 no other railway in the world has as many man-made objects, namely 40 tunnels, 16 avalanche galleries, 470 overpasses, bridges, and pipe culverts, some 280 protecting walls, let alone various buildings at different railway stations. The Circum-Baikal Railway is also known as the "golden buckle of the steel belt" (the Trans-Siberian Railway being the "steel belt") because the construction of the greatest Russian railway was finished on the shores of Lake Baikal. In December 2003, the Severomuysky Tunnel on the Baikal-Amur Mainline (a section of the East Siberian Railway) was commissioned, the longest tunnel in Russia and the fifth longest