The Taz is a river located in western Siberia, has a length of 1401 km and drains a basin estimated at 150000 km2. Its middle and lower course are located within Yamalo-Nenets Autonomous Okrug, while its upper course borders with Krasnoyarsk Krai. The now ruined city of Mangazeya was located by the Taz.

Course

The Taz begins near Lake Dynda, Siberian Uvaly, a hilly area of the West Siberian Plain. It flows roughly northwestwards across largely uninhabited areas. Its mouth is in the Taz Estuary, a roughly 250 km long estuary that begins in the area of the settlement of Tazovsky and ends in the Gulf of Ob. A portage connects the Taz with the Turukhan and the Yenisey. There are numerous lakes in its basin, such as the Chyortovo. Its major tributaries include the Bolshaya Shirta and Khudosey from the right and the Tolka and Chaselka from the left.