OR artificial lake of Mornos It recorded its smallest extent since 2014, according to an analysis of the Meteo Unit of the Athens National Observatory and data from the Sentinel-2 satellite.
Specifically, in 9 September 2025the surface of the lake showed a noticeable shrinkage, raising concerns about the availability of water reserves in the wider area.
The most recent satellite face on September 9, 2025 confirms that the extent of the lake is shaped to the 8.9 square kilometersby recording a reduction from the 11.4 square kilometers of September 2024 and 15.3 square kilometers of 2023which is also the average of the last decade.
At the same time quantitative shrinkage of water reserves In the lake it moves at similar rates of reduction: according to EYDAP data, the September 2024 The lake contained 328 million cubic meters of waterwhile a year later, the September 2025the volume of water had fallen into the 193 million cubic metersby marking a decrease in the order of -42%.
Following on these developments, the MEA/NSA created a new citizen information service, the “Observatory for Artificial Lake Mornos” (www.meteo.gr/mornos), with the aim of continuously monitoring the status of the lake and informing the public.
According to the METOO team, the main tool of the Observatory is the satellite images of the lake, which are renewed every fortnight and allow comparison with earlier data.
Watching rainfall and snow -covered
Continuous information on rainfall in the area is achieved through measurements by two meteorological stations of the Meteo: One is located in the community of Koniakos, north of the Mornos basin, and the other in the Mornos Dam. These data will be renewed daily as part of the lake observatory.
‘Attached images that capture:
- The evolution of the Lake area in September 2025 and 2024, according to Sentinel-2 satellite,
- The total cumulative rainfall since early 2025 as recorded at the Meteorological Station in Mornos Dam,
- The daily change in snow cover in the Mornos Basin during the winter 2024–2025 compared to the average of 2005–2024.
Source: Skai
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