Most rivers and lakes in Upper Austria are subject to various restrictions for and in favor of shipping traffic.
Motor vehicles are not allowed to drive closer than 200 meters to the shore or a reed belt in front of it, except for mooring or berthing. The shore may only be approached by the shortest route and at a maximum speed of 10 km/h.
Bathing and diving is prohibited within 100 meters of harbor entrances and passenger ship moorings (exception: public bathing areas with suitable supervisors).
Water sports events, water festivals or similar events that may lead to an accumulation of vehicles or floating bodies or may obstruct navigation require an official permit. The competent authority is the district authority in whose area the water body is located.
For some restrictions or prohibitions, an exceptional permit is possible under certain conditions. The responsible district authority is the one in whose district the water body is located.
Skippers have to inform themselves about the presence of storm warning devices and, if they indicate the approach of a storm, to go ashore.
The operation of vehicles with combustion engines is prohibited in the period from 01.07. to 31.08. each year