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Monitoring State environmental monitoring Monitoring of water bodies Lake Baikal Ingress of chemicals into Lake Baikal 2021 data|
Suspended solids, thousand tonnes
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Organic substances, thousand tonnes
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The diagrams provide an estimate of the removal of substances with aqueous runoff from the main stream tributaries of Lake Baikal – the rivers Selenga, Upper Angara, Barguzin and Turka.
In 2021, among the presented tributaries of Baikal, the most noticeable increase in water content was observed along the river Selenga. In the outlet section of the river, an increase in the annual water flow to 53.9 km3 (2021) compared to 31.0 km3 (2020) was recorded.
It should be noted that, compared with 2020, in 2021 through the outlet of Selenga River, pollutant inflows have increased disproportionately to the increase in water flow. There was a significant increase in the removal of suspended solids to 1.52 million tons (2021) compared to 0.25 million tons (2020), the removal of difficult-to-oxidize organic substances increased to 0.74 million tons (2021) compared to 0.27 million tons (2020) - 2.7 times.
In accordance with the increase in weighted average concentrations in combination with an increase in the water flow of the Selenga River in 2021 almost 3 times more difficult-to-oxidize organic substances and other pollutants entered through its outlet gate compared to 2020.
Observations were carried out at five stations (stationary): Baykalsk, Khamar-Daban (southern coast of the lake), Angara Source, Bolshoye Goloustnoye (west coast of the southern part of Lake Baikal) and Khuzhir (Olkhon island, middle Baikal).
The ingress of chemicals into the area of Lake Baikal occurred mainly with atmospheric precipitation.
The quantitative determination of precipitation included group indicators: the sum of dissolved mineral substances, organic and sparingly soluble substances.
In 2021, compared to the previous year, the flow of organic and sparingly soluble substances at the Khamar-Daban station decreased.
At Baikalsk and Istok Angara stations, an increase in the input of substances from the atmosphere compared to 2020 was noted for all observed indicators, with the exception of the amount of minerals.
At st. Bolshoe Goloustnoye marked a slight increase in the inflow of sparingly soluble substances from the atmosphere.
An increase in the amount of mineral and organic substances was noted at Khuzhir station.
In 2024, the Baikal Mile will be held from 6 to 8 June.
Taking part in the Baikal Mile is a great way to test your limits of possibilities and feel the breath of nature in one of the most beautiful places on earth.
In 2024, the festival of ice sculptures on Lake Baikal is scheduled for the period from February 15 to 28. During these two weeks, the lake shore will turn into a real open-air museum, where everyone will be able to enjoy sculptural masterpieces created from ice.
The portal has been created for FSBI ”Informational and Analytical Center for Development of Water Bodies and Associated Properties” under the special program “Protection of Lake Baikal and Socio-Economic Development of the Baikal Natural Preserve for 2012-2020.”
