Vorona River (Russia)
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Position of Worona in the catchment of Don
The Worona (Russian Ворона ) is a 454 km long right tributary of Chopjor in the European part of Russia.
Course
The Worona rises in about 240 m altitude in Kerensk - Tschembarer ridge which extends in the western part of the Volga plate and after the old name of lying in this area places Kerensk and Tschembar, is today Wadinsk and Belinsky appropriately named. At its entire length it flows through in the southwestern to southern directions the western part of the Volga plate in the region of transition in the Oka -Don plain.
The first flowed through forest-steppe landscape is changing on the lower reaches of the river in steppe gradually, but is everywhere in significantly altered by agricultural use. The river valley itself, for long stretches a steep and high right (western ) and flat, terraced left (eastern ) bank characteristic, take in many places in a width of a few kilometers deciduous forests a. In the lower reaches, the 15,000 -acre Tellermanowski forest extends up to almost 300 -year-old, man-made oak stands.
In the city the Borisoglebsk Worona finally flows into the Don Creek Chopjor. In the lower reaches its width reaches about 40 meters, the depth of two meters. The flow rate is 0.1 m / s
The most important tributaries are Tschembar and Karai from the left and the right of Ira .
Hydrology
The catchment area of the river comprises 13,200 km ².
The mean annual runoff is in estuary near Borisoglebsk at 41.5 m³ / s and rises during the Frühjahshochwassers an average of up to 650 m³ / s. From early December to early April, the river freezes over.
The mineral content of the water varies between 150-350 mg / l in spring and 700-800 mg / l in winter. The average suspended sediment concentration is between 100 and 250 g / m³.
Use and infrastructure
The Worona is not navigable. It is used to supply water to the towns on the river and the irrigation of agricultural land. The river is used for fishing and recreation.
Due to their generally quiet run through undisturbed, dense deciduous forests the Worona is a popular destination for technically relatively simple, but extended canoe trips, some of Kirsanof after Borisoglebsk 278 kilometers.
Space totaling 11,206 acres on the middle reaches of the river, between Kirsanof and Inschawino were made in 1994 as Worona Nature Reserve ( Woroninski sapowednik ) under protection.
Penza - - Sysran In close proximity to the source of Worona the railway Ryazhsk runs. Not far from the river located just off the town Belinski crosses him the R209 highway that connects with Pensa Kirsanof, and will follow up there at some distance from its course. In Kirsanof the railway crossing (Moscow - ) Michurinsk - Saratov and their following trunk road R209 from Tambov Saratov the river, between Uwarowo and Mutschkapski the railway line Tambov - Balashov - Kamyshin. In mouth close at Borisoglebsk cross it the railway line (Moscow - ) Grjasi - Volgograd and the A144 trunk road which leads coming as part of the European route 38 of Kursk on Voronezh to Saratov.