Thanks — Use and need for freshwater for various functions: Shortage of flushing in average year

Fresh surface water is used for a number of purposes, including for flushing the regional water system. Flushing up. In the west of the Netherlands in particular, fresh water is also needed to prevent the water from becoming too salty in the regional system. The salty water is supplied in these areas from the subsurface (salt). By always mixing it with plenty of fresh water (by rinsing locks) the surface water is not too salty to also be able to use it for irrigation. By the way, water in the main water system is also used to prevent the salt tongue from moving too far inland from the sea, threatening the inlet points of fresh water. This vodt is achieved by a minimum flow rate in the main water system. For this water demand, the total amount of water that can be supplied and the final shortage of fresh water for this purpose has been determined within the ‘Delta Fresh Water Programme’. The results can be presented for 5 subareas in which the Netherlands is divided into the sums implemented by DP Freshwater. (numbers in m³/summer half-years).