Bolshoy Uzen River

Bolshoy Uzen (Kazakh: Үлкен Өзен, Russian: Большой Узень) is a river in Saratov Oblast of Russia and West Kazakhstan Province of Kazakhstan. It is 650 kilometres (400 mi) long, with a drainage basin of 15,600 square kilometres (6,000 sq mi).

The Bolshoy Uzen has its sources on the western edge of the Obshchy Syrt highlands of Russia, and flows in a generally southerly direction over the steppes of the Caspian Depression. It terminates in West-Kazakhstan, in a network of small lakes and swamps called the Kamysh-Samarskiye Lakes. The Bolshoy Uzen runs parallel to the Maly Uzen River, some 50 kilometres (31 mi) further west.

Most of the river's waters comes from snowmelt, so the river's flow peaks in April, while in the summer parts of the river will dry up completely. At Novouzensk the discharge varies from 7.3 to 393 cubic metres per second (260 to 13,880 cu ft/s). The river freezes over in December and stays icebound to the end of March or the beginning of April.

The town of Novouzensk is situated at the Bolshoy Uzen. The river is used for water supply and irrigation.

Rivers of Kazakhstan
Rivers	Ajaguz River Akan-Burluk River Aksu River Arys River Asa River Aschiagar River Ayat River Badam River Bala Bugun Bolshoy Uzen River Borolday River Bugun River Bukhtarma River Byan River Chu River Emba River Emil River Esentai River Ilek River Iman-Burluk River Irgiz River Ili River Irtysh River Ishim River Karatal River Kigach River Keles River Koksu River Koluton River Kurchum River Lukina River Maly Uzen River Narym River Nura River O River Qapal River Qyzylaghash River Sagyz River Sary su River Sharyn River Shiderti River Sytasty River Syr Darya Talas River Temir River Tersakkan River Tobol River Tuolba River Torgay River Ural River Uba River Ubagan River Uil River Ulba River Ulken-Bugun

Coordinates: 48°54′02″N 49°54′44″E / 48.9006°N 49.9122°E / 48.9006; 49.9122