The Satis () is a river in central

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

, 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 drainage ...

of the

Moksha ''Moksha'' (; sa, मोक्ष, '), also called ''vimoksha'', ''vimukti'' and ''mukti'', is a term in Hinduism, Buddhism, Jainism and Sikhism for various forms of emancipation, enlightenment, liberation, and release. In its soteriology, ...

.«Река САТИС»
Russian State Water Registry

Geography

The source of the river is 5 km northeast of

Satis, Pervomaysk, Nizhny Novgorod Oblast Satis (russian: Сати́с) is an urban locality (an urban-type settlement) in Nizhny Novgorod Oblast, Russia. Population: History The settlement was based in 1912 by Semen Fedorovich Kundashkin who was a local timber manufacturer and is s ...

. The river is long, and has a drainage basin of . The width of the river is about 2–3 meters near the village of Satis (Pervomaisky District), which is a few kilometres from the source. The depth at this point is about 0.3 - 0.5m. The flow rate is about 0.8 m/s and the water remains clear. The river bed has sediment of pebbles and sand and the shores are lined with trees. The nature of the terrain remains almost uniform until the city of

Sarov Sarov (russian: Саро́в) is a closed town in Nizhny Novgorod Oblast, Russia. It was known as Gorkiy-130 (Горький-130) and Arzamas-16 (), after a (somewhat) nearby town of Arzamas,SarovLabsCreation of Nuclear Center Arzamas-16/ref ...

. The water is characterized by a fairly high content of

sulphates The sulfate or sulphate ion is a polyatomic anion with the empirical formula . Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salts of sulfuric acid and many ar ...

and

calcium salts Although most compounds are referred to by their IUPAC systematic names (following IUPAC nomenclature), traditional names have also been kept where they are in wide use or of significant historical interests. A Ac * Actinium(III) chloride ...

. The soil is rich in limestone and

limonite Limonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as FeO(OH)·H2O, although this is not entirely accurate as the ratio of oxide to hydroxid ...

. The presence of the latter is manifested in the water's red hue after heavy rain. The water is cold even on hot summer days owing to the many springs that feed it. The presence of underwater springs largely explains the river does not freeze during the winter period in some areas. Satis River geese

Fish

The

ichthyofauna Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

of the river is diverse. The following fish species inhabit the Satis, including its tributaries and other bodies of water in the river basin: * Chub *

Minnow Minnow is the common name for a number of species of small freshwater fish, belonging to several genera of the families Cyprinidae and Leuciscidae. They are also known in Ireland as pinkeens. Smaller fish in the subfamily Leusciscidae are co ...

Ruff Ruff may refer to: Places *Ruff, Virginia, United States, an unincorporated community *Ruff, Washington, United States, an unincorporated community Other uses *Ruff (bird) (''Calidris pugnax'' or ''Philomachus pugnax''), a bird in the wader fami ...

Dace A dace is a small fish that can be one of many different species. The unmodified name is usually a reference to the common dace (''Leuciscus leuciscus''). This, like most fish called "daces", belongs to the family Cyprinidae, mostly in subfamily ...

Crucian Carp The crucian carp (''Carassius carassius'') is a medium-sized member of the common carp family Cyprinidae. It occurs widely in northern European regions. Its name derives from the Low German ''karusse'' or ''karutze'', possibly from Medieval Lat ...

* Crucian Carp Silver (Carassius Gibelio) *

Carp Carp are various species of oily freshwater fish from the family Cyprinidae, a very large group of fish native to Europe and Asia. While carp is consumed in many parts of the world, they are generally considered an invasive species in parts of ...

Rudd ''Scardinius'' is a genus of ray-finned fish in the family Cyprinidae commonly called rudds. Locally, the name "rudd" without any further qualifiers is also used for individual species, particularly the common rudd (''S. erythrophthalmus''). Th ...

Bream Bream ( ) are species of freshwater and marine fish belonging to a variety of genera including ''Abramis'' (e.g., ''A. brama'', the common bream), ''Acanthopagrus'', '' Argyrops'', ''Blicca'', '' Brama'', ''Chilotilapia'', '' Etelis'', ''Lepo ...

Tench The tench or doctor fish (''Tinca tinca'') is a fresh- and brackish-water fish of the order Cypriniformes found throughout Eurasia from Western Europe including the British Isles east into Asia as far as the Ob and Yenisei Rivers. It is also ...

Burbot The burbot (''Lota lota'') is the only gadiform (cod-like) freshwater fish Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments di ...

Roach Roach may refer to: Animals * Cockroach, various insect species of the order Blattodea * Common roach (''Rutilus rutilus''), a fresh and brackish water fish of the family Cyprinidae ** ''Rutilus'' or roaches, a genus of fishes * California roach ...

Perch Perch is a common name for fish of the genus ''Perca'', freshwater gamefish belonging to the family Percidae. The perch, of which three species occur in different geographical areas, lend their name to a large order of vertebrates: the Percif ...

Chinese sleeper The Chinese sleeper (''Perccottus glenii''), also known as the Amur sleeper, is a species of freshwater sleeper native to Amur River basin in eastern Asia with introduced populations in other regions of Eurasia. It is currently the only known me ...

(rus. ротан) *

Bleak Bleak may refer to: Fish * Species of the genus '' Alburnus'' * '' Alburnoides bipunctatus'', also known as the schneider Music * "Bleak", a song by Opeth from '' Blackwater Park'' * "Bleak", a song by Soulfly from '' Dark Ages'' Other uses * B ...

Loach Loaches are fish of the superfamily Cobitoidea. They are freshwater, benthic (bottom-dwelling) fish found in rivers and creeks throughout Eurasia and northern Africa. Loaches are among the most diverse groups of fish; the 1249 known species of ...

Pike Pike, Pikes or The Pike may refer to: Fish * Blue pike or blue walleye, an extinct color morph of the yellow walleye ''Sander vitreus'' * Ctenoluciidae, the "pike characins", some species of which are commonly known as pikes * ''Esox'', genus of ...

* Amur Sleeper *

Orfe The ide (''Leuciscus idus''), or orfe, is a freshwater fish of the family Cyprinidae found in larger rivers, ponds, and lakes across Northern Europe and Asia. It has been introduced outside its native range into Europe, North America, and New Z ...

Representatives of the

of Moksha are found in the lakes located on the territory of the Mordovia Reserve: Sheatfish,

Pikeperch ''Sander'' (formerly known as ''Stizostedion'') is a genus of predatory ray-finned fish in the family Percidae, which also includes the perches, ruffes, and darters. They are also known as "pike-perch" because of their resemblance to fish in th ...

, etc. In general, the dominant species are Roach, Gudgeon, Perch and Bleak - Oxyphilic species, which indicates favourable abiotic and biotic regimes. The population of species that are sensitive to pollution, such as Gudgeon, Bleak, Chub, Ruff, and Dace has increased. This indicates the ecological recovery processes of the river are succeeding.

References

{{DEFAULTSORT:Satis, River Rivers of Nizhny Novgorod Oblast