Sviyaga River

Sviyaga River
Sviyaga River at Ulyanovsk
Country	Russia
Basin
Main source	Ulyanovsk Oblast 100 m (330 ft)
River mouth	Kuybyshev Reservoir, Volga 53 m (174 ft)
Basin size	16,700 km2 (6,400 sq mi)
Physical characteristics
Length	375 km (233 mi)
Discharge	Average rate: 1,590 m3/s (56,000 cu ft/s) (near mouth)

The Sviyaga (Russian: Свияга, Tatar: Cyrillic Зөя, Latin Zöyä, Chuvash: Сĕве) is a river in the Ulyanovsk Oblast and Tatarstan, a right tributary of the Volga River. It is 375 kilometres (233 mi) long, and its drainage basin covers 16,700 square kilometres (6,400 sq mi). The Sviyaga River flows into the Sviyaga Cove of the Kuybyshev Reservoir, west of Kazan. It freezes up in November or December and stays under the ice until April or May. Major tributaries are the Arya, Bula, Karla, Kubnya, and Tosha rivers.

The city of Ulyanovsk is along the Sviyaga River. In Ulyanovsk, the Sviyaga flows only a few miles away from the Volga, but their confluence is about 200 kilometres (120 mi) north of Ulyanovsk.

The castle of Sviyazhsk, which dates to 1551, is on the island in Sviyaga Cove of the Kuybyshev Reservoir.

Volga River
Tributaries	Selizharovka Vazuza Tvertsa Shosha Dubna Medveditsa Nerl Kashinka Sit Mologa Suda Sheksna Sogozha Kotorosl Kostroma Nyomda Unzha Uzola Oka Kudma Kerzhenets Sura Vetluga Rutka Tsivil Great Kokshaga Little Kokshaga Anish Ilet Sviyaga Sumka Kazanka Kama Aktay Bezdna Cheremshan Sok Samara Chapayevka Little Irgiz Irgiz Tereshka Yeruslan Akhtuba (distributary)
Reservoirs	Lake Volgo Ivankovo Uglich Rybinsk Gorky Cheboksary Kuybyshev Saratov Volgograd
Hydroelectric stations	Ivankovo Uglich Rybinsk Nizhny Novgorod Cheboksary Zhiguli Saratov Volga
Canals	Moscow Canal Volga–Baltic Waterway Volga–Don Canal
Cities	Astrakhan Volgograd Saratov Samara Kazan Ulyanovsk Nizhny Novgorod Yaroslavl Tver

Coordinates: 55°43′52″N 48°36′57″E / 55.73111°N 48.61583°E / 55.73111; 48.61583