Odra

•    The Institute of Meteorology and Water Management – National Research Institute (IMGW-PIB) has developed a dynamic hydrological model to forecast the situation on the Oder and 'see' industrial discharges. A section of the Oder from Chałupki to the town of Brzeg, which allows the situation on the river to be forecast three to seven days in advance, is working on a test basis;
•    Due to declining water flows in the river, the situation is complex, with 'golden algae' developing at points in the Oder;
•    Recent laboratory tests have found no or only trace amounts of the so-called primensin toxin in the water. Nevertheless, the situation can change dynamically, so environmental inspections and services remain on standby.
IMGW-PIB has developed a dynamic hydrological model that will enable industrial discharges to 'see themselves'. Among other things, this solution makes it possible to avoid the phenomenon of cumulative discharges when the water level in the river decreases due to drought. It is currently running on a test basis on a section of the Oder from Chałupki to Brzeg, which allows the situation on the river to be forecast 3-7 days in advance. The model developed by the institute facilitates active management of industrial discharges and adaptation to current hydrological and meteorological conditions. Ultimately, the model will cover the entire Oder River later this summer season.
On 27 May 2024, the next meeting of the inter-ministerial team for the Oder River took place at the Ministry of Climate and Environment with the participation of Minister of Climate and Environment Paulina Hennig-Kloska, Minister of Climate and Environment  Urszula Zielińska and Deputy Minister of Infrastructure Przemysław Koperski.
According to IMGW-PIB, low and medium water levels prevail  in the Oder and Vistula basins despite the fleeting rainfall. Thunderstorms may cause localised, short-lived rises in water levels, especially in small rivers. However, the predicted rainfall will not improve the situation and, with the continuing heat, drought is possible. Current hydro- and meteorological conditions are similar to those on the Oder River in 2022. According to continuous monitoring by GIOŚ, a 'golden alga' is developing in the river', a  I level alert has been issued for the presence of this alga in the Oder.
Environmental inspections remain on standby. Recent laboratory tests have found no or only trace amounts of the so-called primensin toxin in the water. Nevertheless, the situation can change dynamically. The Oder and its oxbow lakes, where the 'golden alga' is found, as well as the Gliwice Canal, are monitored on an ongoing basis by the services of the provincial governors and employees of the regional boards of Polish Waters. Field visits are conducted on a daily basis. By the reports of 27 May, no dead fish were observed at these sites.
On Tuesday, 28 May, another meeting was held by the Crisis Management Team of the Ministry of Climate and Environment , which will issue updated recommendations for the services after analysing the current situation.
The  Crisis Management Team of the Ministry of Climate and Environment recommends that the relevant units continuously monitor the data from GIOŚ, especially regarding water oxygenation levels and "golden algae" abundance, as well as daily field inspections. Adequate flow management is also being implemented and, in addition, a lock restriction on the Gliwice Canal is being introduced. These measures are intended to limit the ingress of cumulative amounts of 'golden algae' from the Gliwice Canal into the Oder River.
Current announcements and monitoring results are available on the portal: www.gov.pl/web/odra