ArmInfo. There is no catastrophic situation on Lake Sevan at this moment. This opinion was expressed on August 8 at a press conference by former Minister of Environment of the Republic of Armenia, Advisor to the Director of the Institute of Geology of the National Academy of Sciences of Armenia Sargis Shahazizyan.
But he noticed that today there are bogging processes on the lake, which must be watched so as not to face serious consequences in the future. In this regard, S. Shahazizyan noted that it is necessary to slowly increase the water level in Sevan, otherwise the balance may be disturbed, which will lead to decay of coastal trees, organic matter, which subsequently entails waterlogging in the lake, which already takes place be.
However, according to S. Shahazizyan, the main problem of Sevan is 28 rivers, which flow into the lake and fill it with various kinds of garbage. In this regard, he emphasized that there is a need to create treatment plants on at least 4-5 large rivers flowing into Sevan. "Otherwise, we will not be able to talk about replenishing the fauna in the lake," he emphasized.
S. Shahazizyan defined today's attitude towards Sevan as criminal, barbaric. "Instead of updating irrigation systems, since 60-70% of water leaving Sevan disappears, we constantly release from the lake, which cannot but lead to serious consequences," the expert said.
At the same time, according to the former minister, in Armenia today, special attention needs to be paid to the conservation of water resources, namely their effective use. "There is no water shortage in Armenia, there is a problem of inefficient use of water resources," he emphasized.
To recall, on July 9, Minister of the Environment Erik Grigoryan stated from the rostrum of the National Assembly of the Republic of Armenia that the state will allocate funds for cleaning Lake Sevan.
Earlier, the Ministry of Nature Protection of Armenia provided information on the ecological status of Lake Sevan and the steps taken in connection with the threat of waterlogging of the lake. The message of the Ministry, in particular, states: ''Recently, the growth of blue-green algae of the genus Anabaena has been observed in Lake Sevan. These algae in the lake were first seen in the 1940s and the first flowering was recorded in 1964 and repeated in different volumes in other years, including in 2018''.
According to experts, several factors contributed to the growth of blue-green algae - wastewater from dozens of settlements and coastal objects flowing into a lake, agriculture, fish farming and animal husbandry, in particular, phosphorus and nitrogen residues penetrating into the waters of Sevan, flooded coastal forest belt , high temperature and climatic changes, low precipitation, as well as frequent and strong winds that increase evaporation of water. According to the Ministry, in May of this year only 36 million cubic meters of precipitation were recorded, which is close to the historically minimum (33 million). In order to stabilize the ecological state of the lake, the Ministry of the Environment has already carried out and continues to take a number of actions: 1. Daily work is underway to define the demand for irrigation water and reduce water withdrawal from Sevan; water withdrawal volumes are monitored through field research; 2. Constant monitoring is carried out in order to obtain information on the current state of the lake and work to strengthen the monitoring system; 3. The Ministry of the Nature Protection has applied to UNESCO to give Lake Sevan and the adjacent territory the status of a biosphere reserve. An official letter from UNESCO confirmed that work in this direction has already begun; 4. Simulation of 1D water quality monitoring in Lake Sevan was carried out with the involvement of the Helmholtz Center in Germany and the Institute of Hydroecology and Ichthyology of the National Academy of Sciences; 5. On June 26, the Ministry sent an official letter to the Ministry of Education and Science of Germany to conduct large-scale monitoring work, including assessing the nutrient balance for the lake and defining nutrient management objectives, developing a model for evaluating the effectiveness of 1D (nutrients, plankton, dissolved in water oxygen), the development of a hydrodynamic 3D model, the assessment of water quality through satellite remote sensing, the assessment of various control scenarios and the identification of problems etc.. The areas to be cleaned (up to 1901.5 m -770 hectares) have been specified. In this regard, a competition has been announced, it is planned to complete the cleaning work in 2019-2022. The Ministry is developing legislative projects aimed at reducing pollution of the lake with municipal sewage. At the request of the Ministry, 14 large business entities operating in the coastal areas of Lake Sevan have already installed wastewater treatment plants at service and leisure centers. To note, in recent months, the Lake Sevan ecosystem has deteriorated sharply. As a result of an increase in algae, the lake swiftly swamps. The quality of water has deteriorated so much that in recent days there has been a decline in livestock in the coastal areas of Sevan.