|Zay, Steppe Zay River
||Mikhaylovka, leninogorsky District, Tatarstan, Russia
||Kama River,near Nizhnekamsk, Tatarstan, Russia
||489 (max, 1979, near Staroye Palchikovo)
The Zay (Russian: Зай; Tatar Cyrillic: Зәй, Latin: Zäy, pronounced [zæɪ]) is a river in Tatarstan, Russian Federation, a left-bank tributary of the Kama River. Its length is 270 km and its drainage basin is 5,020 km². It origins near Mikhaylovka, Leninogorsky District, Tatarstan and falls to the Kama River 7 km south-west of Nizhnekamsk. At its headstream the river is named the Steppe Zay (Russian: Степной Зай, Stepnoy Zay, Tatar Cyrillic: Дала Зәе, Latin: Dala Zäye). The lower reach of the river after the confluence with Forest Zay River (55 km), the river is named simply Zay. Also, one of headstream Steppe Zay’s tributary is also named simply Zay. Another major tributaries are Moshkara, Zay-Karatay, Ursala, Aktashka, and Shumyshka Rivers. The mineralization varies from 2000-3000 to 5000–8000 mg/l. Average sediment in mouth per year is 130 mm. Drainage is regulated. There are two reservoirs, Zainsk and Karabash Reservoirs constructed in Zay valley. Since 1978 it is protected as natural monument of Tatarstan. Zainsk, Almetyevsk and Karabash, Tatarstan stay on the river.
Coordinates: 55°35′28″N 51°39′49″E / 55.59111°N 51.66361°E