Physocarpus

The Great Tsivil (Russian: Большо́й Циви́ль, Bolshoy Tsivil' ; Chuvash: Мăн Çавал, Măn Śaval) or simply Tsivil in its lower course is a river in Chuvashia, Russian Federation, a right tributary of the Volga. The Tsivil is 170 km (110 mi) long, its watershed area is 4,690 km² (1,810 sq mi).^[1] Near Tsivilsk the Maly Tsivil joins the Bolshoy Tsivil, forming Tsivil river, which flows into the Volga near Novocheboksarsk. Other major tributaries are the Unga and Kuganar. Tsivil yearly runoff volume is 640,000,000 m³ (520,000 acre⋅ft).

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