Sammanfattning
Attitude to the water problem is changing. A number of products, which hydrologists found to be suitable in connection with water resources planning for many years have exhausted their usefulness, others have come to replace them. We shall show our opinion about what hydrological information can be given in future, information which to a high degree is based on hydrological models of different types. This will give a background to the application of the methodology presented in this report.