Upper Angara River
Upper Angara: Looking upstream from the bridge leading across the river of the Baikal - Amur Mainline (BAM ) in Nowy Uojan
Location of the Upper Angara River in the far east in the basin of the Yenisei
Template: Infobox River / Obsolete
The Upper Angara River (Russian Верхняя Ангара / Verkhnaya Angara; Buryat Дээдэ Ангар ) is a 438 km long, north-easterly tributary of Lake Baikal in eastern Siberia (Russia, Asia).
Course
The Upper Angara rises immediately west of the border of the Republic of Buryatia to the Irkutsk Oblast in the meeting area of the Deljun Uranium mountains in the north and the Northern Mujagebirges ( Seweromuisker Mountains) to the south. Your several small Gebirgseen ( around 2000 m), this includes the Melkowsee, powered origin lies at about 1600 meters height.
First, the Upper Angara, which flows through the territory of Buryatia in west south-westerly direction, as mountain river through a narrow valley, forming numerous rapids flowing. In Jantschukan it reaches the Upper Angarasenke. This to over 50 km wide tectonic depression, the continuation of the Baikal sink in a northeasterly direction represents and is bounded on both sides by high mountains: on the north by the Upper Angaragebirge ( Werchneangarsker Mountains), in the south through the western part of the Northern Mujagebirges and closer in the South through the Lake Baikal, the Bargusingebirge. In the area of relatively flat, often swampy valley, the Upper Angara forms of track as oxbow lakes and meander.
Prior to his mouth, the river with the northern Kitschera a 400 km ² large common delta, which begins below the village Verkhnaya Saimka. About 15 km above the mouth of the Upper Angara is through a 15 km long tributary of the larger ( Angarakan, not to be confused with the inflow of the upper reaches ) to the lower reaches of the Kitschera. Since the raising of the water level of Lake Baikal through the establishment of the Irkutsk dam on the Angara by more than one meter, the southwest part of the delta is permanently under water and forms a Baikalsky Sor -called, from the lake by a low, sandy spit detached shoal area. After flowing through the Delta, the main arm of the Upper Angara flows almost 35 km east-northeast of the city Sewerobaikalsk or 22 km east-southeast of Nischneangarsk to the northeastern part of Lake Baikal.
Inflows
Among the tributaries of the Upper Angara include ( downriver considered, with length in kilometers): Angarakan (64 km), Jantschukan (47 km), Jantschui (87 km), Gonkuli (82 km), Kotera (244 km) and Swetlaja (119 km ) from the left and Tschuro (124 km) from the right.
Hydrographic
The catchment area of the Upper Angara is 21.4 thousand km ². Above the estuary of the river reaches a width of about 300 m and 1.5 m depth; The flow rate is 0.5 m / s
The average discharge of the village Verkhnaya Saimka, above the estuary and 31 km above the mouth of 260 m³ / s, with a minimum monthly mean of 61.4 m³ / s in March and a maximum monthly average of 828 m³ / s in June. Your Delta entfließen 263 m³ / s (8.3 km ³ / year) Water, which is the second richest water Upper Angara after Selenga and before Bargusin tributary of Lake Baikal is.
The Upper Angara is covered from early October to early May of ice.
Infrastructure
The Upper Angara is reported to 214 kilometers from the village Uojan to the mouth as a waterway, for smaller vehicles already departing from jetty Kamniokan (270 km). Similarly, the lower reaches of the creek are Kotera (21 km to the village Kumora ) and the estuary Angarakan with the lower reaches of the Kitschera navigable.
In the 1970s, railroad Baikal - Amur Mainline and the following their street were led through the Upper Angarasenke. You follow the river to almost 200 km in length to the confluence of the creek Angarakan. The railway crosses the river on a 350 m long bridge above the village Uojan. A few kilometers south-east of this bridge was the most important station of this route section: Nowy Uojan. The corresponding urban-type settlement is today approximately 4500 inhabitants the biggest town near the river.