Lake Baikal (/baɪˈkɑːl, -ˈkæl/; Russian: о́зеро Байка́л, tr. Ozero Baykal, IPA: [ˈozʲɪrə bɐjˈkaɫ]; Buryat: Байгал нуур, Baigal nuur; Mongolian: Байгал нуур, Baigal nuur, etymologically meaning, in Mongolian, "the Nature Lake") is a rift lake in Russia, located in southern Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast.
Lake Baikal is the largest freshwater lake by volume in the world, containing 22–23% of the world's fresh surface water. With 23,615.39 km3 (5,670 cu mi) of fresh water, it contains more water than the North American Great Lakes combined. With a maximum depth of 1,642 m (5,387 ft), Baikal is the world's deepest lake. It is considered among the world's clearest lakes and is considered the world's oldest lake – at 25–30 million years. It is the seventh-largest lake in the world by surface area.
Like Lake Tanganyika, Lake Baikal was formed as an ancient rift valley, having the typical long, crescent shape with a surface area of 31,722 km2 (12,248 sq mi). Baikal is home to thousands of species of plants and animals, many of which exist nowhere else in the world. The lake was declared a UNESCO World Heritage Site in 1996. It is also home to Buryat tribes who reside on the eastern side of Lake Baikal, raising goats, camels, cattle, sheep, and horses, where the mean temperature varies from a winter minimum of −19 °C (−2 °F) to a summer maximum of 14 °C (57 °F).
|Lake type||Continental rift lake|
|Primary inflows||Selenga, Barguzin, Upper Angara|
|Catchment area||560,000 km2 (216,000 sq mi)|
|Basin countries||Russia and Mongolia|
|Max. length||636 km (395 mi)|
|Max. width||79 km (49 mi)|
|Surface area||31,722 km2 (12,248 sq mi)|
|Average depth||744.4 m (2,442 ft)|
|Max. depth||1,642 m (5,387 ft)|
|Water volume||23,615.39 km3 (5,670 cu mi)|
|Residence time||330 years|
|Shore length1||2,100 km (1,300 mi)|
|Surface elevation||455.5 m (1,494 ft)|
|Islands||27 (Olkhon Island)|
|Settlements||Severobaykalsk, Slyudyanka, Baykalsk, Ust-Barguzin|
|UNESCO World Heritage Site|
|Criteria||Natural: vii, viii, ix, x|
|Inscription||1996 (20th Session)|
|1 Shore length is not a well-defined measure.|
Lake Baikal is in a rift valley, created by the Baikal Rift Zone, where the Earth's crust is slowly pulling apart. At 636 km (395 mi) long and 79 km (49 mi) wide, Lake Baikal has the largest surface area of any freshwater lake in Asia, at 31,722 km2 (12,248 sq mi), and is the deepest lake in the world at 1,642 m (5,387 ft). The bottom of the lake is 1,186.5 m (3,893 ft) below sea level, but below this lies some 7 km (4.3 mi) of sediment, placing the rift floor some 8–11 km (5.0–6.8 mi) below the surface, the deepest continental rift on Earth. In geological terms, the rift is young and active – it widens about 2 cm (0.8 in) per year. The fault zone is also seismically active; hot springs occur in the area and notable earthquakes happen every few years. The lake is divided into three basins: North, Central, and South, with depths about 900 m (3,000 ft), 1,600 m (5,200 ft), and 1,400 m (4,600 ft), respectively. Fault-controlled accommodation zones rising to depths about 300 m (980 ft) separate the basins. The North and Central basins are separated by Academician Ridge, while the area around the Selenga Delta and the Buguldeika Saddle separates the Central and South basins. The lake drains into the Angara tributary of the Yenisei. Notable landforms include Cape Ryty on Baikal's northwest coast.
Baikal's age is estimated at 25–30 million years, making it the most ancient lake in geological history. It is unique among large, high-latitude lakes, as its sediments have not been scoured by overriding continental ice sheets. Russian, U.S., and Japanese cooperative studies of deep-drilling core sediments in the 1990s provide a detailed record of climatic variation over the past 6.7 million years. Longer and deeper sediment cores are expected in the near future. Lake Baikal is the only confined freshwater lake in which direct and indirect evidence of gas hydrates exists.
The lake is completely surrounded by mountains. The Baikal Mountains on the north shore, the Barguzin Range on the northeastern shore, and the taiga are technically protected as a national park. It contains 27 islands; the largest, Olkhon, is 72 km (45 mi) long and is the third-largest lake-bound island in the world. The lake is fed by as many as 330 inflowing rivers. The main ones draining directly into Baikal are the Selenga River, the Barguzin River, the Upper Angara River, the Turka River, the Sarma River, and the Snezhnaya River. It is drained through a single outlet, the Angara River.
Baikal is one of the clearest lakes in the world. During the winter in open sections the water transparency can be as much as 30–40 m (100–130 ft), but during the summer it is typically 5–8 m (15–25 ft). Baikal is rich in oxygen, even in deep sections, which separates it from distinctly stratified bodies of water such as Lake Tanganyika and the Black Sea.
In Lake Baikal, the water temperature varies significantly depending on location, depth, and time of the year. During the winter and spring, the surface freezes for about 4–5 months; from early January to early May–June (latest in the north), the lake surface is covered in ice. On average, the ice reaches a thickness of 0.5 to 1.4 m (1.6–4.6 ft), but in some places with hummocks, it can be more than 2 m (6.6 ft). During this period, the temperature slowly increases with depth in the lake, being coldest near the ice-covered surface at around freezing, and reaching about 3.5–3.8 °C (38.3–38.8 °F) at a depth of 200–250 m (660–820 ft). After the surface ice breaks up, the surface water is slowly warmed up by the sun, and in May–June, the upper 300 m (980 ft) or so becomes homothermic (same temperature throughout) at around 4 °C (39 °F) because of water mixing. The sun continues to heat up the surface layer, and at the peak in August can reach up to about 16 °C (61 °F) in the main sections and 20–24 °C (68–75 °F) in shallow bays in the southern half of the lake. During this time, the pattern is inverted compared to the winter and spring, as the water temperature falls with increasing depth. As the autumn begins, the surface temperature falls again and a second homothermic period at around 4 °C (39 °F) of the upper circa 300 m (980 ft) occurs in October–November. In the deepest parts of the lake, from about 300 m (980 ft), the temperature is very stable at 3.1–3.4 °C (37.6–38.1 °F) with only minor annual variations.
The average surface temperature has risen by almost 1.5 °C (2.7 °F) in the last 50 years, resulting in a shorter period where the lake is covered by ice. At some locations, hydrothermal vents with water that is about 50 °C (122 °F) have been found. These are mostly in deep water, but locally have also been found in relatively shallow water. They have very little effect on the lake's temperature because of its huge volume.
Stormy weather on the lake is common, especially during the summer and fall, and can result in waves as high as 4.5 m (15 ft).
Lake Baikal is rich in biodiversity. It hosts more than 1,000 species of plants and 2,500 species of animals based on current knowledge, but the actual figures for both groups are believed to be significantly higher. More than 80% of the animals are endemic.
Submerged macrophytic vascular plants are mostly absent, except in some shallow bays along the shores of Lake Baikal. More than 85 species of submerged macrophytes have been recorded, including genera such as Ceratophyllum, Myriophyllum, Potamogeton, and Sparganium. The invasive species Elodea canadensis was introduced to the lake in the 1950s. Instead of vascular plants, aquatic flora is often dominated by several green algae species, notably Draparnaldioides, Tetraspora, and Ulothrix in water shallower than 20 m (65 ft); although Aegagrophila, Cladophora, and Draparnaldioides may occur deeper than 30 m (100 ft). Except for Ulothrix, there are endemic Baikal species in all these green algae genera. More than 400 diatom species, both benthic and planktonic, are found in the lake, and about half of these are endemic to Baikal; however, significant taxonomic uncertainties remain for this group.
The Baikal seal or nerpa (Pusa sibirica) is found throughout Lake Baikal. It is one of only three entirely freshwater seal populations in the world, the other two being subspecies of ringed seals.
A wide range of land mammals can be found in the habitats around the lake, such as Eurasian brown bear, Eurasian wolf, red fox, sable, stoat, elk, Siberian red deer, reindeer, Siberian roe deer, Siberian musk deer, wild boar, red squirrel, Siberian chipmunk, marmot, lemming, and Alpine hare. Until the Early Middle Ages, the wisent (European bison) was present near the lake, which was the easternmost part of its range.
Fewer than 65 native fish species occur in the lake basin, but more than half of these are endemic. The families Abyssocottidae (deep-water sculpins), Comephoridae (golomyankas or Baikal oilfish), and Cottocomephoridae (Baikal sculpins) are entirely restricted to the lake basin. All these are part of the Cottoidea and are typically less than 20 cm (8 in) long. Of particular note are the two species of golomyanka (Comephorus baicalensis and C. dybowskii). These long-finned, translucent fish typically live in open water at depths of 100–500 m (330–1,640 ft), but occur both shallower and much deeper. Together with certain abyssocottid sculpins, they are the deepest living freshwater fish in the world, occurring to near the bottom of Lake Baikal. The golomyankas are the primary prey of the Baikal seal and represent the largest fish biomass in the lake. Beyond members of Cottoidea, there are few endemic fish species in the lake basin.
The most important local species for fisheries is the omul (Coregonus migratorius), an endemic whitefish. It is caught, smoked, and then sold widely in markets around the lake. Also, a second endemic whitefish inhabits the lake, C. baicalensis. The Baikal black grayling (Thymallus baicalensis), Baikal white grayling (T. brevipinnis), and Baikal sturgeon (Acipenser baerii baicalensis) are other important species with commercial value. They are also endemic to the Lake Baikal basin.
The lake hosts a rich endemic fauna of invertebrates. The copepod Epischura baikalensis is endemic to Lake Baikal and the dominating zooplankton species there, making up 80 to 90% of total biomass. It is estimated that the epischurans filter as much as a thousand cubic kilometers of water a year, or the lake’s entire volume every twenty-three years.
More than 350 species and subspecies of amphipods are endemic to the lake. They are exceptionally diverse in ecology and appearance, ranging from the pelagic Macrohectopus to the relatively large deep-water Abyssogammarus and Garjajewia, the tiny herbivorous Micruropus, and the parasitic Pachyschesis (parasitic on other amphipods). The "gigantism" of some Baikal amphipods, which has been compared to that seen in Antarctic amphipods, has been linked to the high level of dissolved oxygen in the lake. Among the "giants" are several species of spiny Acanthogammarus and Brachyuropus (Acanthogammaridae) found at both shallow and deep depths. These conspicuous and common amphipods are essentially carnivores (will also take detritus), and can reach a body length up to 7 cm (2.8 in).
Similar to another ancient lake, Tanganyika, Baikal is a center for ostracod diversity. About 90% of the Lake Baikal ostracods are endemic, meaning that there are c. 200 endemic species. This makes it the second-most diverse group of crustacean in the lake, after the amphipods. The vast majority of the Baikal ostracods belong in the families Candonidae (more than 100 described species) and Cytherideidae (about 50 described species), but genetic studies indicate that the true diversity in at least the latter family has been heavily underestimated. The morphology of the Baikal ostracods is highly diverse.
As of 2006, almost 150 freshwater snails are known from Lake Baikal, including 117 endemic species from the subfamilies Baicaliinae (part of the Amnicolidae) and Benedictiinae (part of the Lithoglyphidae), and the families Planorbidae and Valvatidae. All endemics have been recorded between 20 and 30 m (66 and 98 ft), but the majority mainly live at shallower depths. About 30 freshwater snail species can be seen deeper than 100 m (330 ft), which represents the approximate limit of the sunlight zone, but only 10 are truly deepwater species. In general, Baikal snails are thin-shelled and small. Two of the most common species are Benedictia baicalensis and Megalovalvata baicalensis. Bivalve diversity is lower with more than 30 species; about half of these, all in the families Euglesidae, Pisidiidae, and Sphaeriidae, are endemic (the only other family in the lake is the Unionidae with a single nonendemic species). The endemic bivalves are mainly found in shallows, with few species from deep water.
With almost 200 described species, including more than 160 endemics, the center of diversity for aquatic freshwater oligochaetes is Lake Baikal. A smaller number of other freshwater annelids is known: 30 species of leeches (Hirudinea), and 4 polychaetes. Several hundred species of nematodes are known from the lake, but a large percentage of these are undescribed.
More than 140 endemic flatworm (Plathelminthes) species are in Lake Baikal, where they occur on a wide range of bottom types. Most of the flatworms are predatory, and some are relatively brightly marked. They are often very abundant in shallow waters, where they are typically less than 2 cm (1 in) long, but in deeper parts of the lake, the largest, Baikaloplana valida, can reach up to 30 cm (1 ft) when outstretched.
At least 18 species of sponges occur in the lake, including 14 species from the endemic family Lubomirskiidae (the remaining are from the nonendemic family Spongillidae). In the nearshore regions of Baikal, the largest benthic biomass is sponges. Lubomirskia baicalensis, Baikalospongia bacillifera, and B. intermedia are unusually large for freshwater sponges and can reach 1 m (3.3 ft) or more. These three are also the most common sponges in the lake. While the Baikalospongia species typically have encrusting or carpet-like structures, L. baikalensis often has branching structures and in areas where common may form underwater "forests". Most sponges in the lake are typically green when alive because of symbiotic chlorophytes (zoochlorella), but can also be brownish or yellowish.
Located in the former northern territory of the Xiongnu confederation, Lake Baikal is one site of the Han–Xiongnu War, where the armies of the Han dynasty pursued and defeated the Xiongnu forces from the second century BC to the first century AD. They recorded that the lake was a "huge sea" (hanhai) and designated it the North Sea (Běihǎi) of the semimythical Four Seas. The Kurykans, a Siberian tribe who inhabited the area in the sixth century, gave it a name that translates to "much water". Later on, it was called "natural lake" (Baygal nuur) by the Buryats and "rich lake" (Bay göl) by the Yakuts. Little was known to Europeans about the lake until Russia expanded into the area in the 17th century. The first Russian explorer to reach Lake Baikal was Kurbat Ivanov in 1643.
Russian expansion into the Buryat area around Lake Baikal in 1628–58 was part of the Russian conquest of Siberia. It was done first by following the Angara River upstream from Yeniseysk (founded 1619) and later by moving south from the Lena River. Russians first heard of the Buryats in 1609 at Tomsk. According to folktales related a century after the fact, in 1623, Demid Pyanda, who may have been the first Russian to reach the Lena, crossed from the upper Lena to the Angara and arrived at Yeniseysk.
Vikhor Savin (1624) and Maksim Perfilyev (1626 and 1627–28) explored Tungus country on the lower Angara. To the west, Krasnoyarsk on the upper Yenisei was founded in 1627. A number of ill-documented expeditions explored eastward from Krasnoyarsk. In 1628, Pyotr Beketov first encountered a group of Buryats and collected yasak (tribute) from them at the future site of Bratsk. In 1629, Yakov Khripunov set off from Tomsk to find a rumored silver mine. His men soon began plundering both Russians and natives. They were joined by another band of rioters from Krasnoyarsk, but left the Buryat country when they ran short of food. This made it difficult for other Russians to enter the area. In 1631, Maksim Perfilyev built an ostrog at Bratsk. The pacification was moderately successful, but in 1634, Bratsk was destroyed and its garrison killed. In 1635, Bratsk was restored by a punitive expedition under Radukovskii. In 1638, it was besieged unsuccessfully.
In 1638, Perfilyev crossed from the Angara over the Ilim portage to the Lena River and went downstream as far as Olyokminsk. Returning, he sailed up the Vitim River into the area east of Lake Baikal (1640) where he heard reports of the Amur country. In 1641, Verkholensk was founded on the upper Lena. In 1643, Kurbat Ivanov went further up the Lena and became the first Russian to see Lake Baikal and Olkhon Island. Half his party under Skorokhodov remained on the lake, reached the Upper Angara at its northern tip, and wintered on the Barguzin River on the northeast side.
In 1644, Ivan Pokhabov went up the Angara to Baikal, becoming perhaps the first Russian to use this route, which is difficult because of the rapids. He crossed the lake and explored the lower Selenge River. About 1647, he repeated the trip, obtained guides, and visited a 'Tsetsen Khan' near Ulan Bator. In 1648, Ivan Galkin built an ostrog on the Barguzin River which became a center for eastward expansion. In 1652, Vasily Kolesnikov reported from Barguzin that one could reach the Amur country by following the Selenga, Uda, and Khilok Rivers to the future sites of Chita and Nerchinsk. In 1653, Pyotr Beketov took Kolesnikov's route to Lake Irgen west of Chita, and that winter his man Urasov founded Nerchinsk. Next spring, he tried to occupy Nerchensk, but was forced by his men to join Stephanov on the Amur. Nerchinsk was destroyed by the local Tungus, but restored in 1658.
The Trans-Siberian Railway was built between 1896 and 1902. Construction of the scenic railway around the southwestern end of Lake Baikal required 200 bridges and 33 tunnels. Until its completion, a train ferry transported railcars across the lake from Port Baikal to Mysovaya for a number of years. The lake became the site of the minor engagement between the Czechoslovak legion and the Red Army in 1918. At times during winter freezes, the lake could be crossed on foot, though at risk of frostbite and deadly hypothermia from the cold wind moving unobstructed across flat expanses of ice. In the winter of 1920, the Great Siberian Ice March occurred, when the retreating White Russian Army crossed frozen Lake Baikal. The wind on the exposed lake was so cold, many people died, freezing in place until spring thaw. Beginning in 1956, the impounding of the Irkutsk Dam on the Angara River raised the level of the lake by 1.4 m (4.6 ft).
As the railway was built, a large hydrogeographical expedition headed by F.K. Drizhenko produced the first detailed contour map of the lake bed.
Several organizations are carrying out natural research projects on Lake Baikal. Most of them are governmental or associated with governmental organizations. The Baikalian Research Centre is an independent research organization carrying out environmental educational and research projects at Lake Baikal.
In July 2008, Russia sent two small submersibles, Mir-1 and Mir-2, to descend 1,592 m (5,223 ft) to the bottom of Lake Baikal to conduct geological and biological tests on its unique ecosystem. Although originally reported as being successful, they did not set a world record for the deepest freshwater dive, reaching a depth of only 1,580 m (5,180 ft). That record is currently held by Anatoly Sagalevich, at 1,637 m (5,371 ft) (also in Lake Baikal aboard a Pisces submersible in 1990). Russian scientist and federal politician Artur Chilingarov, the leader of the mission, took part in the Mir dives as did Russian leader Vladimir Putin.
Since 1993, neutrino research has been conducted at the Baikal Deep Underwater Neutrino Telescope (BDUNT). The Baikal Neutrino Telescope NT-200 is being deployed in Lake Baikal, 3.6 km (2.2 mi) from shore at a depth of 1.1 km (0.68 mi). It consists of 192 optical modules.
The lake, nicknamed "the Pearl of Siberia", drew investors from the tourist industry as energy revenues sparked an economic boom. Viktor Grigorov's Grand Baikal in Irkutsk is one of the investors, who planned to build three hotels, creating 570 jobs. In 2007, the Russian government declared the Baikal region a special economic zone. A popular resort in Listvyanka is home to the seven-story Hotel Mayak. At the northern part of the lake, Baikalplan (a German NGO) built together with Russians in 2009 the Frolikha Adventure Coastline Track, a 100 km (62 mi)-long long-distance trail as example for a sustainable development of the region. Baikal was also declared a UNESCO World Heritage site in 1996. Rosatom plans to build a laboratory near Baikal, in conjunction with an international uranium plant and to invest $2.5 billion in the region and create 2,000 jobs in the city of Angarsk.
Lake Baikal is a popular destination among tourists from all over the world. According to the Russian Federal State Statistics Service, in 2013, 79,179 foreign tourists visited Irkutsk and Lake Baikal; in 2014, 146,937 visitors. The most popular places to stay by the lake are Listvyanka village, Olkhon Island, Kotelnikovsky cape, Baykalskiy Priboi, resort Khakusy and Turka village. The popularity of Lake Baikal is growing from year to year, but there is no developed infrastructure in the area. For the quality of service and comfort from the visitor's point of view, Lake Baikal still has a long way to go.
The ice road to Olkhon Island is the only legal ice road on Lake Baikal. The route is prepared by specialists every year and it opens when the ice conditions allow it. In 2015, the ice road to Olkhon was open from February 17 to March 23. The thickness of the ice on the road is about 60 cm (24 in), maximum capacity allowed – 10 t (9.8 long tons; 11 short tons); it is open to the public from 9 am to 6 pm. The road through the lake is 12 km (7.5 mi) long and it goes from the village Kurkut on the mainland, to Irkutskaya Guba on Olkhon Island.
Baikal has a number of different tourist activities, depending on season. Generally Baikal has two top tourist seasons. The first season is ice season, which starts usually in mid-January and lasts till mid-April. During this season ice depth increases up to 140 centimeters, that allows quite safe vehicle driving on the ice cover (except heavy vehicles, such as tourist buses, that do not take this risk). This allows access to the figures of ice that are formed at rocky banks of Olkhon Island, including Cape Hoboy, the Three Brothers rock, and caves to the North of Khuzhir. It also provides access to small islands like Ogoy Island and Zamogoy.
The ice itself has a transparency of one meter depth, having different patterns of crevasses, bubbles, and sounds. That is why this season is popular for hiking, ice-walking, ice-skating, and bicycle-riding. An ice route around Olkhon is around 200 km. Some tourists may spot a Baikal seal along the route. Local entrepreneurs offer overnight in Yurt on ice. Also this season attracts fans of ice fishing. This activity is most popular on Buryatia side of Baikal (Ust-Barguzin). Non-fishermen may try fresh Baikal fresh fish on local markets in villages (Listvyanka, Ust-Barguzin).
The ice season ends in mid-April. Owing to increasing temperatures ice starts to melt and becomes shallow and fragile, especially in places with strong under-ice flows. Vehicles and people start to fall under ice. This leads to many casualties every year.
Second tourist season is summer, which lets tourists dive deeper into virgin Baikal nature. Hiking trails become open, many of them cross two mountain ranges: Baikal Range on the western side and Barguzin Range on the eastern side of Baikal. The most popular trail starts in Listvyanka and goes along the Baikal coast to Bolshoye Goloustnoye. The total length of the route is 55 km, but the most part of tourists usually take only a part of it — a section of 25 km to Bolshie Koty. It has a lower difficulty level and could be passed by people without special skills and gear.
Small tourist vessels operate in the area, availing bird-watching, animal watching (especially Baikal seal), and fishing. Water in the lake stays extremely cold in most places (does not exceed 10 C most of the year), but in few gulfs like Chivirkuy it can be comfortable for swimming.
Olkhon's most-populated village Khuzhir is an ecotourist destination. Baikal has always been popular in Russia and CIS-countries, but for the last few years Baikal has seen an influx of visitors from China and Europe.
The Baykalsk Pulp and Paper Mill was constructed in 1966, directly on the shoreline of Lake Baikal. The plant bleached paper using chlorine and discharged waste directly into Lake Baikal. The decision to construct the plant on the Lake Baikal resulted in strong protests from Soviet scientists; according to them, the ultra-pure water of the lake was a significant resource and should have been used for innovative chemical production (for instance, the production of high-quality viscose for the aeronautics and space industries). The Soviet scientists felt that it was irrational to change Lake Baikal's water quality by beginning paper production on the shore. It was their position that it was also necessary to preserve endemic species of local biota, and to maintain the area around Lake Baikal as a recreation zone . However, the objections of the Soviet scientists faced opposition from the industrial lobby and only after decades of protest, the plant was closed in November 2008 due to unprofitability. In March 2009, the plant owner announced the paper mill would never reopen. However, on January 4, 2010, production was resumed. Later that year on January 13, 2010, Russian Federation President Vladimir Putin introduced changes in the legislation legalising the operation of the plant; this action brought about a wave of protests from ecologists and local residents. These changes were based on the determination President Putin made through a visual verification of Lake Baikal's condition from a miniature submarine, "I could see with my own eyes – and scientists can confirm – Baikal is in good condition and there is practically no pollution". Despite this, in September 2013, the mill underwent a final bankruptcy, with the last 800 workers slated to lose their jobs by December 28, 2013. On the day the plant was to close, December 28, 2013, the Russian government announced plans to build the Russian Nature Reserve's Expo Center in place of the closed paper mill.
Russian oil pipelines state company Transneft was planning to build a trunk pipeline that would have come within 800 m (2,600 ft) of the lake shore in a zone of substantial seismic activity. Environmental activists in Russia, Greenpeace, Baikal pipeline opposition and local citizens were strongly opposed to these plans, due to the possibility of an accidental oil spill that might cause significant damage to the environment. According to the Transneft's president, numerous meetings with citizens near the lake were held in towns along the route, especially in Irkutsk. Transneft agreed to alter its plans when Russian president Vladimir Putin ordered the company to consider an alternative route 40 kilometers (25 mi) to the north to avoid such ecological risks. Transneft has since decided to move the pipeline away from Lake Baikal, so that it will not pass through any federal or republic natural reserves. Work began on the pipeline two days after President Putin agreed to changing the route away from Lake Baikal.
In 2006, the Russian government announced plans to build the world's first international uranium enrichment center at an existing nuclear facility in Angarsk, a city on the river Angara some 95 km (59 mi) downstream from the lake's shores. Critics and environmentalists argued it would be a disaster for the region and are urging the government to reconsider.
After enrichment, only 10% of the uranium-derived radioactive material would be exported to international customers, leaving 90% near the Lake Baikal region for storage. Uranium tailings contain radioactive and toxic materials, which if improperly stored, are potentially dangerous to humans and can contaminate rivers and lakes.
An enrichment center was constructed in the 2010s.
Chinese owned AquaSib has been purchasing land along the lake and started building a bottling plant and pipeline in the town of Kultuk. The goal was to export 190 million liters of water to China even though the lake had been experiencing historically low water levels. This spurred protests by the local population that the lake would be drained of its water, at which point the local government halted the plans pending analysis.
According to The Moscow Times and Vice, an increasing number of an invasive species of algae thrives in the lake from hundreds of tons of liquid waste, including fuel and excrement, regularly disposed into the lake by tourist sites, and up to 25,000 tons of liquid waste are disposed of every year by local ships.
In the past, the Baikal was referred to by many Russians as the "Baikal Sea" (Russian: Море Байкал, More Baikal), rather than merely "Lake Baikal" (Russian: Озеро Байкал, Ozero Baikal). This usage is attested already in the Life of Protopope Avvakum (1621–1682), and on the late-17th-century maps by Semyon Remezov. It is also attested in the famous song, now passed into the tradition, that opens with the words Славное море, священный Байкал (Glorious sea, [the] sacred Bajkal). To this day, the strait between the western shore of the Lake and the Olkhon Island is called Maloye More (Малое Море), i.e. "the Little Sea".
According to 19th-century traveler T. W. Atkinson, locals in the Lake Baikal Region had the tradition that Christ visited the area:
The people have a tradition in connection with this region which they implicitly believe. They say "that Christ visited this part of Asia and ascended this summit, whence he looked down on all the region around. After blessing the country to the northward, he turned towards the south, and looking across the Baikal, he waved his hand, exclaiming 'Beyond this there is nothing.'" Thus they account for the sterility of Daouria, where it is said "no corn will grow."
Lake Baikal has been celebrated in several Russian folk songs. Two of these songs are well known in Russia and its neighboring countries, such as Japan.
Chinese investments to develop the new Silk Road have triggered protests in Russia. After Chinese investors presented plans to pump water from Lake Baikal and send it to China, an anti-Chinese-investor attitude has emerged in Siberia. Many people in Siberia complain that the Chinese build hotels, but the jobs go to Chinese people rather than Russians. Russian guest house and hotel operators complain that Chinese investors do not involve them and take tourism business away from the local people. Especially great concerns arise because of environmental damage. The local authorities have already stopped numerous projects by Chinese investors in response to the protests. 
Aeroflot Flight 498 was a Soviet domestic passenger flight from Severomuysk to Ulan-Ude that crashed near Lake Baikal on 14 June 1981 en route to its planned stop at Nizhneangarsk Airport, Nizhneangarsk. All 44 passengers—including 13 children—and 4 crew members on board were killed, and the aircraft was destroyed. It remains the deadliest crash involving an Ilyushin Il-14. At the time, it was the 30th-worst accident in Russian aviation history and is now the 50th-worst Russian aviation accident.Angara River
The Angara River (Buryat and Mongolian: Ангар, Angar, lit. "Cleft"; Russian: Ангара́, Angará) is a 1,779-kilometer-long (1,105 mi) river in Siberia, which traces a course through Russia's Irkutsk Oblast and Krasnoyarsk Krai. It is the river that drains Lake Baikal and is the headwater tributary of the Yenisei River. It was formerly known as the Lower or Nizhnyaya Angara (distinguishing it from the Upper Angara). Below its junction with the Ilim, it was formerly known as the Upper Tunguska (Russian: Верхняя Тунгуска, Verkhnyaya Tunguska, distinguishing it from the Lower Tunguska) and, with the names reversed, as the Lower Tunguska.Leaving Lake Baikal near the settlement of Listvyanka (at 51.867°N 104.818°E / 51.867; 104.818), the Angara flows north past the Irkutsk Oblast cities of Irkutsk, Angarsk, Bratsk, and Ust-Ilimsk. It then turns west, enters the Krasnoyarsk Krai, and joins the Yenisei near Strelka (at 58.102°N 92.991°E / 58.102; 92.991, 40 kilometres (25 mi) south-east of Lesosibirsk).Baikal-Lena Nature Reserve
Baikal-Lena Nature Reserve (Russian: Байкало-Ленский заповедник) (also Lake Baikal; or Baykal-Lensky, or Baykal-Lena) is a Russian 'zapovednik' (strict nature reserve) located on the northwest coast of Lake Baikal in southern Siberia. It protects both lake shore and the source of the Lena River. The reserve stretches along the western coast of Lake Baikal for about 120 km, with an average width of 65 km. The reserve is situated in the Kachugsky District of Irkutsk Oblast. As of December 1996, the Baikal-Lena Reserve (combined with the Barguzin and Baikal Reserves) is included in the list of sites of World Cultural and Natural Heritage, and a World Heritage Site with Pribaikalsky National Park. The Baikal-Lena Reserve is managed jointly with Pribaikalsky National Park, which is immediately to the south, thus protecting a continuous 580 km of shoreline on Lake Baikal.Baikal Deep Underwater Neutrino Telescope
The Baikal Deep Underwater Neutrino Telescope (BDUNT) (Russian: Байкальский подводный нейтринный телескоп) is a neutrino detector conducting research below the surface of Lake Baikal (Russia) since 2003. The first detector was started in 1990 and completed in 1998. It was upgraded in 2005 and again starting in 2015 to build the Baikal Gigaton Volume Detector (Baikal-GVD.) BDUNT has studied neutrinos coming through the Earth with results on atmospheric muon flux. BDUNT picks up a lot of atmospheric neutrinos created by cosmic rays interacting with the atmosphere — as opposed to cosmic neutrinos which can give clues to cosmic events and are therefore of greater interest to physicists.Baikal Nature Reserve
The Baikal Nature Reserve (; Russian: Байка́льский запове́дник, Baikalski Zapovednik) is a nature reserve on the southeast shore of Lake Baikal, in southern Buryatia, Russia. Also called Baikal Zapovednik, it was established in 1969 for preserving the nature along the lake and the neighboring central part of the Chamar-Daban Range. The area of this nature reserve is 165,700 hectares [ha] (409,000 acres). It hosts dark pine taiga (silver fir, cedar, spruce), thin forests, Siberian Dwarf Pine and rhododendron underbrush, subalpine meadows, and alpine tundras. The Baikal Nature Reserve is home to 812 kinds of plants, 49 types of mammals, 272 birds, 3 reptiles, 3 amphibians, and 7 types of fish. The reserve is also home to East Siberian brown bear, Baikal lynx, wolverine, otter, osprey, and golden eagle. The Baikal Nature Reserve is part of the World Network of Biosphere Reserves (also see List of biosphere reserves in the Russian Federation). The reserve is also a part of the Lake Baikal World Heritage Site. The Kabansky Nature Zakaznik, across 12,100 ha (30,000 acres), was transferred under the jurisdiction of the Baikal Nature Reserve in 1985.Baikal Rift Zone
The Baikal Rift Zone is a series of continental rifts centered beneath Lake Baikal in southeastern Russia. Current strain in the rifts tends to be extending with some shear movement. A series of basins form along the zone for more than 2,000 kilometres (1,200 mi), creating a rift valley. The rifts form between the Eurasian Plate to the west and the Amur Plate to the east.Baikal seal
The Baikal seal, Lake Baikal seal or nerpa (Pusa sibirica), is a species of earless seal endemic to Lake Baikal in Siberia, Russia. Like the Caspian seal, it is related to the Arctic ringed seal. The Baikal seal is one of the smallest true seals and the only exclusively freshwater pinniped species. A subpopulation of inland harbour seals living in the Hudson's Bay region of Quebec, Canada (lac de loups marins harbour seals), the Saimaa ringed seal (a ringed seal subspecies) and the Ladoga seal (a ringed seal subspecies) are found in fresh water, but these are part of species that also have marine populations.The most recent population estimates are 80,000 to 100,000 animals, roughly equaling the expected carrying capacity of the lake. At present, the species is not considered threatened, despite hunting (both legal and illegal) and pollution of the lake.Baikal sturgeon
The Baikal sturgeon, Acipenser baerii baicalensis, is a sturgeon indigenous to Lake Baikal in Siberia, Russia. It is a subspecies of the widely distributed Siberian sturgeon (Acipenser baerii). It resides primarily in the northern end of the lake, making considerable movements along the shore, and migrating up the Selenga River to spawn. Not long ago, sturgeons weighing 125 kilograms were not uncommon. The Baikal Sturgeon is now listed as endangered.Baikalia
Baikalia (or Baykalia) is a vague geographical term referring to the region around Lake Baikal. It is less common than the concept of Transbaikalia, the area to the east of Lake Baikal. The term Baikalia is loosely defined and has no official definition.Dzherginsky Nature Reserve
Dzherginsky Nature Reserve (Russian: Джергинский заповедник) is a Russian 'zapovednik' (strict nature reserve), located about 100 km east of the northern section of Lake Baikal. It covers the source and upper reaches of the Barguzin River, the second largest tributary to Lake Baikal, and is at the junction of three mountain ranges - the Barguzin Range to the west of the reserve, the Ikat Range and the South Muya Ridge. The reserve's mountainous territory is dominated by larch forests. It is situated in the Kurumkansky District of Buryatia. The nearest city, Ulan-Ude, is 560 km to the south. The reserve was formally established in 1992 to protect the biodiversity of the upper Barguzin valley, and to study natural processes of the area. It covers an area of 238,088 hectares (919.26 sq mi).Lake Baikal mountain vole
The Lake Baikal mountain vole or Olkhon mountain vole (Alticola olchonensis) is a species of rodent in the family Cricetidae. It is found principally on the Olkhon and Ogoi islands on Lake Baikal, in southern Siberia. While it was originally described as a species, Pavlinov and Rossolimo reassigned it as a subspecies of A. tuvinicus in 1987 before reinstating it as a species in 1998.List of islands of Russia
This is a list of islands of Russia. It includes all islands in Russia with an area greater than 3,000 square kilometres (1,158 sq mi) and some of the more significant minor islands.Olkhon Island
Olkhon (Russian: Ольхо́н, also transliterated as Olchon; Buryat: Ойхон, Oikhon) is the third-largest lake island in the world. It is by far the largest island in Lake Baikal in eastern Siberia, with an area of 730 km2 (280 sq mi). Structurally, it acts as the southwestern margin of Academician Ridge. The island measures 71.5 km (44.4 mi) in length and 20.8 km (12.9 mi) in width.
There are two versions regarding the origin of the name of the island and both are derived from the language of the Buryats, the indigenous people of Olkhon. The first is that the island's name comes from the word oyhon – “woody”, and the second is that it comes from olhan – “dry”. It is still debated which of the two is the actual origin of the name Olkhon as both words describe the island perfectly. Much of the island is still covered by forests and the amount of precipitation is extremely low – about 240 mm (9.4 in) per year.Omul
The omul, Coregonus migratorius, also known as Baikal omul (Russian: байкальский омуль), is a whitefish species of the salmon family endemic to Lake Baikal in Siberia, Russia. It is considered a delicacy and is the object of one of the largest commercial fisheries on Lake Baikal. In 2004, it was listed in Russia as an endangered species.Pribaikalsky National Park
Pribaikalsky National Park (also spelled Pribaykalski, Russian: Прибайкальский национальный парк) covers the southwest coast of Lake Baikal in southeastern Siberia. The coastal strip includes some mountain ridges to the west as well as offshore islands such as Olkhon Island to the east. It is about 50 km southeast of the city of Irkutsk, Irkutsk Oblast. The park is managed with three other nature reserves, and is a major component of the UNESCO World Heritage Site "Lake Baikal". The Angara River, which is the outflow of Lake Baikal west into the Yenisei River basin, runs through the park. The park has very high levels of biodiversity and endemic species.Santabarbaraite
Santabarbaraite is an amorphous ferric hydroxy phosphate mineral hydrate that was discovered in Tuscany, Italy in 2000. It also can be found in Victoria, Australia and Lake Baikal, Siberia. This phosphate mineral has a simplified formula Fe3+3(PO4)2(OH)3·5H2O, which is the same formula of another non-amorphous phosphate mineral called allanpringite. Santabarbaraite occurs as pseudomorphic masses after vivianite (Fe2+3(PO4)2·8H2O). In the process, monoclinic vivianite oxidizes to form the amorphous santabarbaraite. Pseudomorphism can be seen in Victoria, Australia in Wannon Falls which is originally a well-known locality for vivianite and at Lake Baikal, Siberia where the oxidized santabarbaraite can be seen as a rim surrounding vivianite due to exposure to air.Selenga River
The Selenga River (, Selenge River, Mongolian: Сэлэнгэ мөрөн, Selenge mörön; Buryat: Сэлэнгэ гол / Сэлэнгэ мүрэн, Selenge gol / Selenge müren; Russian: Селенга́, IPA: [sʲɪlʲɪnˈɡa]) is a major river in Mongolia and Buryatia, Russia. Its source rivers are the Ider River and the Delgermörön river. It flows into Lake Baikal and has a length of 992 kilometres (616 mi) or 1,024 kilometres (636 mi), according to other sources. The Selenga River is the headwaters of the Yenisei-Angara River system. Carrying 935 cubic metres per second (33,000 cu ft/s) of water into Lake Baikal, it comprises almost half of the riverine inflow and forms a wide delta of 680 square kilometres (260 sq mi), when it reaches the lake.
The name derives from Mongolian verb "seleh" (to swim). According to another version, the name originated with the Evenki sele 'iron' + -nga (suffix) . Selenge Province in Mongolia is derived from the name of this river.Transbaikal
Transbaikal, Trans-Baikal, Transbaikalia (Russian: Забайка́лье, tr. Zabaykalye, IPA: [zəbɐjˈkalʲjɪ]), or Dauria (Даурия, Dauriya) is a mountainous region to the east of or "beyond" (trans-) Lake Baikal in Russia.
The steppe and wetland landscapes of Dauria are protected by the Daurian Nature Reserve, which forms part of a World Heritage Site named "The Landscapes of Dauria".Yenisei River
The Yenisei (Russian: Енисе́й, Jeniséj; Mongolian: Енисей мөрөн, Yenisei mörön; Buryat: Горлог мүрэн, Gorlog müren; Tyvan: Улуг-Хем, Uluğ-Hem; Khakas: Ким суг, Kim sug) also Romanised Yenisey, Enisei, Jenisej, is the largest river system flowing to the Arctic Ocean. It is the central of the three great Siberian rivers that flow into the Arctic Ocean (the other two being the Ob and the Lena). Rising in Mongolia, it follows a northerly course to the Yenisei Gulf in the Kara Sea, draining a large part of central Siberia. The longest stream following the Yenisei-Angara-Selenga-Ider river system, together with its tributaries, Yenisei river is the fifth-longest river in the world.
The maximum depth of the Yenisei is 24 metres (80 ft) and the average depth is 14 metres (45 ft). The depth of river outflow is 32 metres (106 ft) and inflow is 31 metres (101 ft).