6. It is prohibited to erect, lay out or expand a raising or storage facility in a watercourse, lake, swamp, natural marsh or pond and the 15 m area on each side or around those areas, measured from the high-water mark, if any.
The first paragraph applies to sections of watercourses whose total flow area (average width multiplied by average height) is greater than 2 m2.
This section does not apply to bodies of water reserved for firefighting or crop irrigation.