The IJssel Lake as a multi-purpose reservoir = Le Lac d'IJssel, reservoir

The IJssel Lake is a main feature in the Zuiderzeeproject, which is being carried out in the Netherlands to extend the land area by reclamation and to improve the watermanagement of a large area around the lake. The lake has to satisfy various interests such as drainage of and watersupply to the surrounding area's ; navigation, fishing and recreation - each with its own demands with regard to the lay-out of the lake. This has also consequences for the level and design of the lake, the available amount of water during droughts and the quality of the water.