Aubing primary school pupils to explore the Lochhauser Fischbach stream

Pupils from class 2dg at the Aubinger Allee primary school will explore the Lochhauser Fischbach stream in the Aubinger Moos on Friday, 23 October, as part of the "Green Classroom" programme. The excursion goes to Lochhausen, on the eastern edge of the Aubinger Lohe woodland, west of Altostraße at the junction with Asmarstraße. The group meets at 8am at the main entrance of the school at Aubinger Allee 152 and returns there at 12 noon.

The children will first head downstream to a slow-flowing, straightened section with a muddy bed, which no longer serves as a habitat. From there they will move on to the upper course, which has not been straightened. It is a refuge for the brown trout and other species that depend on cool water and a gravel bed.

Brown trout numbers are declining, and the species is on Bavaria's early-warning list. As a cool-water species, it was hit particularly hard by the hot summer of 2026. Munich alone had 41 hot days with temperatures of at least 30 degrees Celsius. Across the country, streams, rivers and lakes warmed more than ever before, and some even dried up for a time.

The brown trout in the upper Lochhauser Fischbach were fortunate during the heatwave. The small fen stream rises in the Aubinger Moos and is fed by cool groundwater from the moor, so it does not warm up over its short course. Shade from trees along its route through the woodland also helps keep the water cool, and unlike streams elsewhere, it did not dry up.

The excursion is organised by the implementation team of the BayernNetzNatur project Aubinger Moos on behalf of the city's Department of Climate and Environmental Protection. Matthias Schwahn, who forms the team with Siegfried Pschibul-Markgraf, is organising the trip. The Aubinger Moos project, set up in 2001, was Munich's first BayernNetzNatur project and was created to support areas of value to nature. The city is responsible for the project, with specialist support from the department's Nature Conservation and Biodiversity division.