From now on, the mowing boats are on the move again on the Old Danube in Vienna, which are supposed to keep the underwater plants in check. This can also improve the water quality.
“The so-called macrophytes are essential for the top water quality in the Old Danube, and they are not really popular with bathers and boaters,” said City Councilor Ulli Sima (SPÖ), who is responsible for water in the city, on Tuesday. Due to the cool March temperatures, the underwater plants, the so-called macrophytes, have so far held back their growth. In the high season up to 25 boats are now beginning to grow under water, according to the broadcast. Vienna’s municipal mowing boat fleet currently includes up to 15 amphibious mowing boats and other escort boats for collecting the mowing material. In the high season, up to 25 boats are in use. In 2021 there were 1900 tons of aquatic plants Last year 2021 a total of around 1900 tons of aquatic plants were taken from the Old Danube. That is less than in previous years. Plant growth peaked in 2018. At that time, more than 3,300 tons of plants had to be fished out of the water.
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