Why is the Ob River an important transportation route in western Siberia?

The Ob River serves as a vital transportation artery in western Siberia because it provides a navigable waterway for shipping both imports and exports across the region.12

The river is navigable for approximately 190 days annually on its upper reaches and 150 days on its lower reaches. Goods transported along the Ob are frequently connected to the northern sea route, which spans the Arctic. Furthermore, the river's utility is enhanced by its integration with major rail infrastructure; the Trans-Siberian Railway crosses the Ob system at Omsk and Novosibirsk, while additional rail lines connect the upper Ob to Kazakhstan via Barnaul. Despite the challenges posed by seasonal ice, the river remains a critical link for the industrial and agricultural centers located throughout the Ob basin.12