Bering Strait, at 1 The Lena at Verkholensk is navigable for 170 days, at Yakutsk for 153 days: the Yenisei at Krasnoyarsk for 196 days.
Are not uncommon at Krasnoyarsk, Irkutsk and Nerchinsk; even in the warmer southern regions of West Siberia and of the Amur the average winter temperature is 2.4° F.
And - 90° respectively; the minimum at Krasnoyarsk is - 67° F., at Irkutsk - 51°, at Omsk - 56°, and at Tobolsk - 58°58° F.
Although very heavy falls of snow take place in the alpine tracts - especially about Lake Baikal - on the other side, in the steppe regions of the Altai and Transbaikalia and in the neighbourhood of Krasnoyarsk, the amount of snow is so small that travellers use wheeled vehicles, and cattle are able to find food in the steppe.
The summer isotherm of 68° F., which in Europe passes through Cracow and Kaluga, traverses Omsk, Krasnoyarsk and Irkutsk, whence it turns north to Yakutsk, and then south again to Vladivostok.
That of - 4° F., which crosses Novaya Zemlya in Europe, passes through Tobolsk, Tomsk, Krasnoyarsk and Irkutsk, and touches 45° N.
Tyumen (29,651) in West Siberia, head of Siberian navigation; Barnaul (29,850), capital of the Altai region; Krasnoyarsk (33337) and Tobolsk (21,401), both mere administrative centres; Biysk (17,206), centre of the Altai trade; Khabarovsk (15,082), administrative centre of the Amur region; Chita (11,480), the capital of Transbaikalia; Nikolsk (22,000); Irbit (20,064); Kolyvan (11,703), the centre of the trade of southern Tomsk; Yeniseisk (11,539), the centre of the gold-mining region of the same name; Kurgan (10, 579), a growing town in Tobolsk; and Minusinsk (10,255), in the southern part of .the Yeniseisk province, trading with north-west Mongolia.
From Tyumen the road proceeds to Omsk, Tomsk, Krasnoyarsk and Irkutsk, sending off from Kolyvan a branch south to Barnaul in the Altai and to Turkestan.
Thence the line was continued across the prairies to Kurgan and Omsk, and from there it followed the great Siberian highway to Krasnoyarsk and Irkutsk, and on round Lake Baikal to Chita and Stryetensk on the Shilka.
Of the Chulym, a tributary of the Ob, intersects the Siberian railway at Krasnoyarsk, and is joined first by the Kan and then by the Upper (Verkhnyaya), the Stony (Podkamennaya), and the Lower (Nizhnyaya) Tunguzka, all from the right.
Three places were affected, namely, Kolobovka, and Krasnoyarsk, in the province of Astrakhan, and Samara, higher up the river.