Replace the old stream, where water kept overflowing, with a wider and higher stream (including two barrages).

We had completely removed the old stream and remodeled the new stream with soil and sand.

For the two barrages we had used granite stones about 15 cm high and placed the pond fleece and the pond liner on top.

Here the first result, after we had put the stones (Ticino river stones, Netstal stones and stones from the surroundings) again (at least times provisionally):

A newt is clearly enjoying the new stream.