Colva (influx of Vishera)

The source of the river is located in the northeast of the region near the border with the Republic of Komi , on the south-eastern slope of Kolvinsky Kamen mountain (575 m above sea level). The source lies on the watershed of the Caspian and Barents seas , to the north of the source of the Kolva - the headwaters of the Kisunya River.

It flows mainly along the western slope of the Northern Urals and flows into Vishera above Ryabinino , 34 km from the mouth. The general direction of the current is southwest. The length of the river is 460 km, the basin area is 13,500 km², the average height of the catchment is 233 m. The average slope is 0.3 m / km. The width reaches 75 m ^{[3] [4]} .

The city of Cherdyn , the villages of Korepinskoe, Iskor , Vilgort , Pokcha , Kamgort , Bigichi are located on the Colve River ^[4] .

The shores of Colva are steep, with deposits of slate, limestone, sandstone; covered with forests, there are meadows. On the right bank, below the village of Bogatyrovo, are located the village of Fighter and the rock of Fighter at a height of 60 m, and at the village of Tsepiya - Divy Kamen and Divya cave ^[3] . Below the confluence of the Visherka Colva flows a narrow corridor in steep banks.

In the bed there are shoals, stones, and rapids. In the upper course of the channel is rocky, below the rocky areas alternate with sandy. The water in the river is bright and clear ^[5] .

Food mixed, with a predominance of snow. It freezes in early November, opens in late April - early May. Alloy. Navigable to high water for 200-250 km from the mouth.

The ancient route from the Volga region to the Pechora region passed along Kolva. Between Cherdyn and Nyrob there were found several Wondrous fortifications, in which eastern coins come across, testifying to the importance of Kolva as a means of communication of the ancient Bulgarian kingdom with the distant North ^[4] . In 1472, on the shores of the Kolva, the Moscow army defeated the army of the Grand Duchy of Perm .

(distance from the mouth)

The largest tributaries are the Birch and Vesherka .

According to the state water register of Russia, it belongs to the Kama basin district , the water management section of the river - Kama from the water measuring station near the village of Bondyug to the city of Berezniki , the river sub-basin of the river - the tributaries of the Kama to the confluence of the White River. River basin - Kama ^[7] .

According to the geographic information system of water management zoning of the territory of the Russian Federation, prepared by the Federal Agency for Water Resources ^[7] :

• The code of the water body in the state water register is 10010100212111100005515
• Hydrological code (GI) - 111100551
• Pool code - 01/10/1,002
• GI Volume Number - 11
• Issue on GI - 1

• Kolva (River in the Perm Region) // The Great Soviet Encyclopedia : [in 30 t.] / Ch. ed. A. M. Prokhorov . - 3rd ed. - M .: Soviet Encyclopedia, 1969-1978.
• Colva, the river of the Perm province // Brockhaus and Efron Encyclopedic Dictionary : 86 tons (82 tons and 4 extra). - SPb. , 1890-1907.
• Colva // Dictionary of modern geographical names / Rus. geogr. oh Mosk. Centre; Under total ed. Acad. V.M. Kotlyakov . Institute of Geography RAS . - Yekaterinburg: U-Factory, 2006.
• The article uses information provided by the Federal Agency for Water Resources from the list of water bodies registered in the state water register as of March 29, 2009. List (rar-archive, 3.21 MB).