The Ulma () is a river in

Mazanovsky District Mazanovsky District () is an administrativeLaw #127-OZ and municipalLaw #384-OZ district (raion), one of the twenty in Amur Oblast, Russia. The area of the district is . Its administrative center is the rural locality (a '' selo'') of Novokiye ...

Amur Oblast Amur Oblast () is a federal subject of Russia (an oblast), located on the banks of the Amur and Zeya rivers in the Russian Far East. The oblast borders Heilongjiang province of the People's Republic of China (PRC) to the south. The administrati ...

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

. It is the longest tributary of the

Selemdzha The Selemdzha () is a river in the Amur Region of Russia. It is the biggest, left tributary of the Zeya. The length of the river is 647 km. The area of its basin 68,600 km². Course The Selemdzha has its source where three mountain r ...

, with a length of and with the fourth in drainage basin area, after the Orlovka and Byssa. The river flows across a largely uninhabited area except for Ulma village on its banks. It is a

rafting Rafting and whitewater rafting are recreational outdoor activities which use an inflatable raft to navigate a river or other body of water. This is often done on whitewater or different degrees of rough water. Dealing with risk is often a ...

and fishing destination.

History

Pottery fragments belonging to the

Paleolithic The Paleolithic or Palaeolithic ( years ago) ( ), also called the Old Stone Age (), is a period in human prehistory that is distinguished by the original development of stone tools, and which represents almost the entire period of human prehist ...

Selemdzha culture (SLM) were found at the archaeological site Ust-Ulma-1 by the river. Organic content in a potsherd found at the site was dated back to between 8,900 and 12,590 years ago. In 1981, the Ulma Zakaznik (Ульминский заказник), a

protected area Protected areas or conservation areas are locations which receive protection because of their recognized natural or cultural values. Protected areas are those areas in which human presence or the exploitation of natural resources (e.g. firewood ...

of , was established in the middle basin of the river.Нижне-Норский - Дирекция ООПТ Амурской области
/ref>

Course

The Ulma is a left

tributary A tributary, or an ''affluent'', is a stream or river that flows into a larger stream (''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 into which they ...

of the Selemdzha. It has its origin at the confluence of the Right Ulma and Left Ulma (Bordak) in the western slopes of the

Turan Range The Turan Range () is a range of mountains in far Russian Far East, North-eastern Russia. Administratively it belongs partly to Amur Oblast and partly to the Khabarovsk Krai of the Federal subjects of Russia, Russian Federation. History The range ...

. The river flows fast in a roughly southwestern direction in its upper reaches. In its middle and lower course it first flows northwestwards and then westwards,

meander A meander is one of a series of regular sinuous curves in the Channel (geography), channel of a river or other watercourse. It is produced as a watercourse erosion, erodes the sediments of an outer, concave bank (cut bank, cut bank or river cl ...

ing across a very marshy

floodplain A floodplain or flood plain or bottomlands is an area of land adjacent to a river. Floodplains stretch from the banks of a river channel to the base of the enclosing valley, and experience flooding during periods of high Discharge (hydrolog ...

dotted with small lakes and oxbows.Topographic map M-52; M 1: 1,000,00
/ref> Finally it meets the left bank of the Selemdzha from its mouth in the Zeya, downstream from Uglovoye and upstream from the village of Bogoslovka.

Google Earth Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satelli ...

Water of Russia - Ulma
/ref> The Ulma river basin is mainly rain-fed and the spring-summer period accounts for up to 90% of the annual

water runoff Runoff is the flow of water across the earth, and is a major component in the hydrological cycle. Runoff that flows over land before reaching a watercourse is referred to as ''surface runoff'' or ''overland flow''. Once in a watercourse, runoff is ...

Floods A flood is an overflow of water (list of non-water floods, or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant con ...

are frequent not only in spring, but also in the summer and autumn and are often quite massive. The river freezes in late October to early November and stays under ice until late April to early May. All the tributaries of the Ulma are quite short, except for the long Kera from the right.

Fauna

Taimen ''Hucho'' is a genus of large piscivorous salmonid fish known as taimens (from Finnish , 'trout', through ), and is closely related to Pacific trout and lenoks (all belonging to the same tribe in the subfamily Salmoninae). Native to the cold ...

lenok Lenoks, otherwise known as Asiatic trout or Manchurian trout,James Card: Fly fishing in South Korea.' Retrieved 22 June 2015. are salmonid fish of the genus ''Brachymystax'', native to rivers and lakes in Mongolia, Kazakhstan, wider Siberia (incl ...

, grayling,

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 ...

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 ...

burbot The burbot (''Lota lota''), also known as bubbot, mariah, loche, cusk, freshwater cod, freshwater ling, freshwater cusk, the lawyer, coney-fish, lingcod, or eelpout, is a species of coldwater ray-finned fish native to the subarctic regions of ...

and

Amur catfish ''Silurus asotus'', commonly called the Amur catfish, Japanese common catfish, Far Eastern catfish, and Chinese catfish, is a carnivorous catfish species belonging to the Siluridae family. It lives in widespread distribution in freshwater habitat ...

are some of the common fish species in the waters of the Ulma river.

References

External links

Река Ульма 2006 год, Амурская область, рыбалкаСплав по реке Ульма
{{Portal bar, Russia Rivers of Amur Oblast Drainage basins of the Sea of Okhotsk

History

Course

Fauna

See also

References

External links