As of: January 26, 2024, 1:49 p.m
By: Laura Forster
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Citizens from the southeast of Garching had to pump water from the cellars for weeks.
The damage is immense.
That's why those affected like (from left) Patrick Löffler, city councilor Walter Kratzl (Greens), Gabriele Oswald-Rübig, Claudia Howell, Christa Sauer, Tanja Pavars and Beatrice Löffler are hoping for help with Noel.
© Ursula Baumgart
The TUM is investigating the groundwater in Garching.
The causes are being researched in order to establish an early warning system and take action.
Garching – For one and a half years, Prof. Dr.
Gabriele Chiogna from the Chair of Hydrogeology and River Basin Management at the Technical University of Munich is researching the groundwater situation in Garching.
The city council decided this at its meeting on Wednesday in front of a packed audience.
Chiogna supports the municipality in researching the causes, setting up an early warning concept and possible measures to avoid high groundwater levels.
The town hall now knows about 75 addresses that are affected by the rise in groundwater, which has caused many flooded basements and sleepless nights for citizens since the end of November.
The good news: “The level has gone down,” said coordinator Rainer Belm.
With the exception of a pump and a few hoses that were recently used in Auweg, all of the loans have been returned to the fire department.
Norbert Fröhler (BfG) wanted to know whether the damage could be estimated.
“Nothing was reported to us,” said Belm.
Fröhler suggested asking for and listing the amount of damage.
Mayor Dietmar Gruchmann (SPD) emphasized again that an aid fund with taxpayers' money was not possible because there was no danger to life and limb.
According to District Administrator Christoph Göbel (CSU), the Bavarian Hardship Fund would be a possibility for financial support.
However, the mayor doesn't think the chances are too high.
In order not to leave the citizens alone with the issue and to find out more about the groundwater problem, the city council has now brought TUM on board.
Mühlbach part of the solution rather than the problem?
“We are not just investigating one cause, but several,” said Prof. Dr.
Chiogna.
Groundwater flooding, which can last for many months, occurs in response to a combination of already high groundwater levels and intense storm events - as was the case in November.
It is interesting that the Garching 2 measuring point did not show the highest level, as was the case in Freising, Dietersheim or Munich, although the situation in the university town was significantly more tense.
“The highest groundwater in Garching was measured in 2010.
There was less damage back then,” Chiogna said.
“We have to investigate why this is the case.”
The Mühlbach also has an influence on the groundwater level, as the scientist showed using a diagram.
The closer the measuring point was to the stream, the faster the water receded.
“It surprises me that the Mühlbach contributes more to drainage than to flooding,” said Götz Braun (SPD).
“Then it’s more part of the solution than part of the problem.”
Science project lasts 18 months
Another body of water keeps the people of Garching busy: the Schleißheim Canal.
The Green group called on the district office to reduce the water in order to find out what effects the body of water has on the groundwater level.
“It only makes sense when we have more measuring points,” said Chiogna, who recently traveled around the city with Belm and looked for locations.
“The new measuring points must be digitally readable at all times,” said Gruchmann.
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Over the course of the 18-month project, the research team will work on the measurement system, a calibrated model, map production, an early warning system and measures to prevent groundwater flooding.
Since “supply shafts and basements have flooded” on the research campus, as Gruchmann said, the TU management has announced its willingness to share in the costs.
The city still needs around 50,000 euros.
Further news from Garching and the Munich district can be found here.