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Caspian Sea

Caspian Sea level to rise in the next 10 years / Caspian Sea drying and death does not have a scientific basis

Iran - 8 October 2018

Recently, Masoud Shafiei, the director of the organization of mapping of the country at its first news conference, reported a decrease of four centimeters of the Caspian Sea in the last two years and a one-meter decline in the last 10 years, saying: "Over the past decade, as much as 380 square kilometers, Lake Urmia has been cut off from the waters of the Caspian Sea during its rainy days, and it seems that its decreasing trend will continue with regard to the data we receive monthly from this area.

Study and Review for Determination of Major Pollutants Flow form the Volga Cascade


Results of research conducted within a framework of the State Monitoring Programme on Roshydromet network stations in the upper and central parts of the Volga delta as well as scientific expeditionary works of State Oceanographic Institute of Roshydromet and Institute of Water Problems at Russian Academy of Sciences were used. Based on analysis results, textual and graphic description of timing dynamics and spatial distribution of pollutants in water and bottom sediments in the Lower Volga and its delta as well as estuarial seashore shallow zone was prepared. Zoning was carried out and multi-annual data on hydrological regime in the delta and estuarial seashore shallow zone were summarized to justify estimations of pollutants discharge by the Volga flow into the Caspian Sea. Assessment of multi-annual variations and average multi-annual volumes of water and sediment discharges in the Volga delta was implemented based on data of network hydrological surveys as well as by monthly intervals over the recent 10 yeas. Based on data of Roshydromet monitoring system on monthly and quarterly water and sediment discharges, pollutant contents in water as well as published data on distribution of water flow in the Volga delta, the estimation of discharges of water, suspended solids and pollutants in different parts of the Volga delta and its sea border was carried out and averaged by quarters for the recent 10 years. Expeditionary research of bottom sediments pollution in the Volga delta and estuarial seashore shallow zone was conducted. All 37 samples collected were subject to laser granulometric analysis and determination of content of total organic carbon, and 5 samples – to comprehensive chemical analysis (metals, aliphatic and polyaromatic hydrocarbons, chlorinated pesticides and polychlorbiphenyls). Comparison of published, archive and expeditionary data by the level of pollution of bottom sediments in the Volga delta was carried out. Gaps in knowledge concerning water dynamics and process of pollutants evolution in the Volga delta were revealed and major tasks for future scientific research in the area proposed.

Akzhaiyk Reserve General Information


State Nature Reserve "Akzhaiyk" (Kazakh "Aқzhayyқ" memlekettіk tabiғi reserves) is located in the Makhambet Atyrau region, in the surrounding lands outside the city of Atyrau. It was created by the Government of the Republic of Kazakhstan on February 6, 2009 in the delta of the Ural River and the adjacent coast of the Caspian Sea. [1] The Ural River Delta and the adjacent coast of the Caspian Sea is included in the list of wetlands of international importance. The reserve was the second Kazakh territory after the Tengiz-Korgalzhyn lake system, which went down in the list. The hydrological regime is characterized by a gradual rise the water level in the Ural River in the second half of April, with the transition in May-June in spring and summer, with a peak at the end of May or the first half of of June. After the first flood peak starts fast and then gradual decline, passing in August and September in the autumn low water.

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