Kernrechtsfrage
Whether the Dünnern in the built-up section qualifies as a 'canal' for the water-setback rule
Extrahierter Entscheid
The built-up and channelized Dünnern in the relevant section is not a 'canal' within the meaning of the cantonal statute; the 12-meter setback for a brook applies.
Extrahierte Begründung
The cantonal materials show that the special rule for canals was new, while the statute intentionally extended the setback for the named brooks. The watercourse therefore remains a brook despite being heavily engineered.