Art. 1

(Art. 3 WRFA)

1. A water retaining facility comprises:
   1. a dam;
   2. the associated reservoir;
   3. safety-relevant auxiliary installations.
2. Dams may take the following form:
   1. concrete or masonry dams;
   2. embankment dams;
   3. river impoundments with their side embankments.
3. A reservoir is a lake that is artificially formed by dams.
4. The reservoir volume is the volume of water in a water retaining facility that could be released in the event of a total collapse of the dam when the reservoir is full.
5. The storage height of a water retaining facility is the height of water impounded by the highest dam when the reservoir is full.
6. Safety-relevant auxiliary installations are structures and equipment installed on the reservoir and dam that are required for the safe operation of a water retaining facility, in particular relief and outlet works.
7. The operator of a water retaining facility is the holder of the licence to put the facility into operation.