The Taz Estuary (Russian: Тазовская губа) is a long gulf formed by the Taz River. It consists of a roughly 250-kilometer (160 mi) long estuary that begins in the area of the settlement of Tazovsky and ends in the Gulf of Ob, which is connected with the Kara Sea. Its average width is about 25 kilometers (16 mi) and it is one of the biggest estuaries in the world.
It begins in the mouths of the Taz and the Pur Rivers in a roughly north-south direction at a latitude of 67° 30' N, and it bends westwards at a latitude of 69° N, widening further before joining the Gulf of Ob.
The Russian Gazprom company is investing in the expansion of gas production in the Taz Estuary area, where there are said to be huge reserves.
- T. Armstrong, In Search of a Sea Route to Siberia, 1553-1619.
- Erki Tammiksaar & Ian R. Stone, Alexander von Middendorff and his expedition to Siberia (1842–1845)
- Gas production: