Translations:Betriebsregeltypen/20/en

• Dependency:

Primarily, the current demand determines the volume of withdrawals from the reservoir, but it is also subject to temporal variations. The upper limits for withdrawals are generally set by water rights or defined maximum withdrawal volumes, which refer to selected periods such as a day, a month, a quarter, or a year. Initially, one only considers the current demand communicated by water suppliers, which constitutes a claim towards the reservoir. There is no connection to the actual reservoir and the respective storage volume.

Whether the demand can be pleased by withdrawing water from the reservoir is determined by the actual storage volumes. To connect the water demand to the actual storage volumes, the structural implementation of withdrawal elements and means of anticipatory management are taken into account. For example, if particularly low storage volumes are reached, it is advisable to throttle withdrawals in advance to avoid the reservoir running empty and then completely failing at covering the demand during prolonged periods of low water . Hence, there is usually space reserved in a dam specifically used for drinking water supply. Its use is handled separately in respective operating plans.