The Oredezh (russian: О́редеж) is a
river
A river is a natural flowing watercourse, usually freshwater
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the ...
in
Volosovsky,
Gatchinsky, and
Luzhsky Districts in the south-western part of
Leningrad Oblast
Leningrad Oblast ( rus, Ленинградская область, Leningradskaya oblast’, lʲɪnʲɪnˈgratskəjə ˈobləsʲtʲ, , ) is a federal subject of Russia (an oblast). It was established on 1 August 1927, although it was not until 1 ...
,
Russia
Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...
, a right
tributary
A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainag ...
of the
Luga. The length of the river is , whereas the area of its
drainage basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
is . The principal tributary of the Oredezh is the
Suyda (left).
A cascade of hydroelectric plants was constructed on the upper course of the river in 1948.
The source of the Oredezh is located in
Lake Kyurlevsky Karyer in the eastern part of Volosovsky District. The river flows south and crosses into Gatchinsky District. Upstream of the settlement of
Batovo it turns east and flows through the urban-type settlements
Siversky and
Vyritsa. At the eastern edge of Vyritsa it sharply turns to the south and accepts the Suyda from the left. It further crosses into Luzhsky District and by the selo of
Milodezh turns west. The mouth of the Oredezh is at the selo of
Ploskoye.
The drainage basin of the Oredezh includes the southern part of Gatchinsky District and the eastern part of Luzhsky District, as well as minor areas in the east of Volosovsky District and in the southwest of
Tosnensky District. Urban-type settlements of Siversky, Vyritsa, and
Druzhnaya Gorka Druzhnaya Gorka (russian: Дружная Горка) is the name of several inhabited localities in Russia.
;Urban localities
*Druzhnaya Gorka, Leningrad Oblast, an urban-type settlement under the administrative jurisdiction of Druzhnogorskoye Se ...
lie in the basin of the Oredezh. A part of
Mshinskoye Boloto Zakaznik lies in the basin of the Oredezh, west of the river course.
References
{{Authority control
Rivers of Leningrad Oblast