Translations:Begriffsdefinitionen/7/en

Systems are variable systems if transport and storage processes can be influenced by operating control elements such as slides, gates, weirs, or valves.

Control elements interfere with natural flow patterns and therefore are not an end in itself, but sometimes rather inevitable to meet the demands placed on the water. Uses among others are:

• Water supply / service water usage
• Flood protection
• Preservation of minimum water volumes
• Low water elevation
• Irrigation
• Energy generation
• Recreational use