Ostrovsky District, Pskov Oblast in the context of "Cheryokha"

The Velikaya (Russian: Вели́кая) is a river in Novosokolnichesky, Pustoshkinsky, Sebezhsky, Opochetsky, Pushkinogorsky, Ostrovsky, Palkinsky, and Pskovsky Districts of Pskov Oblast, as well as in the city of Pskov in Russia. It is the largest tributary of Lake Peipus and belongs to the drainage basin of the Narva. It is 430 kilometres (270 mi) long, and the area of its basin 25,200 square kilometres (9,700 sq mi). The name of the river literally means "Grand" or "Great" in Russian. The towns of Opochka, Ostrov and Pskov are located on the banks of the Velikaya. The principal tributaries of the Velikaya are the Alolya (right), the Issa (left), the Sorot (right), the Sinyaya (left), the Utroya (left), the Kukhva (left), the Cheryokha (right), and the Pskova (right).

The source of the Velikaya is located in the Bezhanitsy Hills in the northwest of Novosokolnichesky District. The river flows south through a system of lakes to Lake Veryato, where it turns west. It accepts the Alolya from the right and gradually turns north, passing through the town of Opochka. Northwest of the urban-type settlement of Pushkinskiye Gory it turns west, accepts the Sinyaya from the left and turns north. In the city of Pskov the Velikaya accepts the Pskova from the right and turns northwest, forming a river delta as it enters Lake Peipus.

Pushkinogorsky District (Russian: Пушкиного́рский райо́н) is an administrative and municipal district (raion), one of the twenty-four in Pskov Oblast, Russia. It is located in the center of the oblast and borders with Ostrovsky District in the north, Novorzhevsky District in the east, Opochetsky District in the south, and with Krasnogorodsky District in the west. The area of the district is 1,059 square kilometers (409 sq mi). Its administrative center is the urban locality (a work settlement) of Pushkinskiye Gory. Population: 9,253 (2010 census); 11,694 (2002 Census); 13,566 (1989 Soviet census). The population of Pushkinskiye Gory accounts for 56.4% of the district's total population.

Palkinsky District (Russian: Па́лкинский райо́н) is an administrative and municipal district (raion), one of the twenty-four in Pskov Oblast, Russia. It is located in the west of the oblast and borders with Pskovsky District in the northwest, Ostrovsky District in the southeast, Pytalovsky District in the south, Viļaka and Alūksne Municipalities of Latvia in the southwest, and with Pechorsky District in the northwest. The area of the district is 1,191.2 square kilometers (459.9 sq mi). Its administrative center is the urban locality (a work settlement) of Palkino. Population: 8,826 (2010 census); 10,520 (2002 Census); 12,392 (1989 Soviet census). The population of Palkino accounts for 33.1% of the district's total population.

Pskovsky District (Russian: Пско́вский райо́н) is an administrative and municipal district (raion), one of the twenty-four in Pskov Oblast, Russia. It is located in the northwest of the oblast and borders with Gdovsky District in the north, Strugo-Krasnensky District in the northeast, Porkhovsky District in the east, Ostrovsky District in the south, and with Palkinsky and Pechorsky Districts in the southwest. Lake Peipus forms the border with Estonia in the west. The area of the district is 3,600 square kilometers (1,400 sq mi). Its administrative center is the city of Pskov (which is not administratively a part of the district). Population: 34,323 (2010 census); 37,216 (2002 Census); 37,557 (1989 Soviet census).

Ostrov (Russian: О́стров, lit. island) is a town and the administrative center of Ostrovsky District in Pskov Oblast, Russia, located on the Velikaya River, 55 kilometers (34 mi) south of Pskov, the administrative center of the oblast. Population: 21,668 (2010 census); 25,078 (2002 census); 29,060 (1989 Soviet census); 27,000 (1974).

The Sinyaya (Russian: Синяя, Belarusian: Сінюха, Latvian: Zilupe) is a river in Verkhnyadzvinsk Raion of Vitebsk Region of Belarus, in Zilupe, Ludza, and Cibla municipalities of Latvia, and in Sebezhsky, Krasnogorodsky, and Ostrovsky Districts of Pskov Oblast in Russia, part of the Baltic Sea basin. It is a left tributary of the Velikaya River. It is 195 kilometres (121 mi) long, and the area of its basin 2,040 square kilometres (790 sq mi).

Its source of the Sinyaya is Lake Osveya, Belarus, close to the place where the borders of Belarus, Latvia and Russia meet. After a short stretch it flows along the Belarus-Latvia border, then turns north and makes the Latvia-Russia border. It further departs from the border into the Latvian side, and flows through the town of Zilupe. North of Zilupe, it returns to the border. Even further north, the river turns northeast and enters Russia. It flows through the urban-type settlement of Krasnogorodsk and turns east in the selo of Venyavino. The mouth of the Sinyaya is in the village of Ustye.

The Utroya (Russian: Утроя, in Latvian the Rītupe) is a river of Latvia and Pytalovsky and Ostrovsky Districts of Pskov Oblast of Russia, a left tributary of the Velikaya. It is 176 kilometres (109 mi) long, and the area of its basin 3,000 square kilometres (1,200 sq mi). Its average discharge at 11 km from its mouth is 17.2 m/s (610 cu ft/s). The principal tributary is the Ludza (Russian: Lzha, right). The towns of Kārsava and Pytalovo are located on the banks of the Rītupe/Utroya.

The source of the Rītupe is Lake Meirānu in the lake district south of the town of Kārsava. The river flows north, passes 2 kilometres (1.2 mi) from the center of Karsava, at a short stretch makes the state border between Latvia and Russia, and crosses into the Russian territory, to Pytalovsky District of Pskov Oblast. The official name of the river in Russia is the Utroya. The river further flows northwest, passes the town of Pytalovo, crosses into Ostrovsky District, accepts the Lzha from the right, and turns north. The mouth of the Utroya is in the village of Larino.

The Kukhva (Latvian: Kūkova, Russian: Кухва) is a river in Kārsava, Baltinava, and Viļaka municipalities of Latvia and in Pytalovsky and Ostrovsky Districts of Pskov Oblast in Russia. It is a left tributary of the Velikaya. It is 106 kilometres (66 mi) long, and the area of its basin 828 square kilometres (320 sq mi).

The source of the Kukhva is Lake Numerne in eastern Latvia. The river flows north, and a stretch of it forms part of the international border between Latvia and Russia. The Kukhva further north departs from the border, crosses the northern part of Pytalovsky District of Pskov Oblast, forms the border between Ostrovsky and Pytalovsky District, turns east and crossing Ostrovsky District where it joins the Velikaya from the left. The mouth of the Kukhva is in the village of Trushki.