Deep below us runs a hidden artery. It quenches Munich’s thirst in an unexpected way. This is the Abfanggraben.
The Abfanggraben is no ordinary canal. It’s a man-made waterway with a vital purpose. Built in the 1920s, alongside the Mittlere-Isar-Kanal, the Abfanggraben is about nine kilometers long. Its main job is to manage the groundwater level in the Johanneskirchen Moos.
Imagine the 1920s. Workers toiling to create this channel. They were building not just a waterway but also a regulator. The Abfanggraben keeps the area’s groundwater in check.
The Abfanggraben starts its journey in the northeastern part of Munich. Here the Hüllgraben flows into the Abfanggraben. The water plunges several meters into a large basin. This basin is like a wide funnel and directs the water.
From there, the Abfanggraben flows northeast. It passes under roads and highways. The water eventually reaches Speichersee. Before the Speichersee, the water flows through an outfall structure. Finally, it empties into a canal. The canal runs to the Mittlere-Isar-Kanal.
Did you know the Abfanggraben’s water ends up back in the Isar River? The Mittlere-Isar-Kanal carries it to the Neufinsing power plant. From there, it flows into the Isar near Moosburg. It’s a long journey for a drop of water.
The Abfanggraben has consistently high water quality. It’s crystal clear because it never floods. The water is always cold. In summer, aquatic plants flourish. The Abfanggraben is a haven for wildlife. Various bird species feel comfortable in the bushes.
The Abfanggraben is more than just a waterway. It is a protected part of Munich’s landscape. It shows how humans and nature can work together. The Abfanggraben helps to regulate the water table. It provides a habitat for plants and animals. It all happens quietly beneath our feet. The Isarfischer club leases the fishing rights.
So, next time you’re in Munich, remember the Abfanggraben. It’s a hidden stream. It is vital to the city’s ecosystem. It is a testament to engineering. A constant flow of water. An often-unseen treasure.