Policy analysis of water management for the Netherlands. Vol XII: Model for regional hydrology, agricultural water demands and damages from droughts and salinity

This report describes a verification simulation of a model of the Eastern Scheldt. Boundary conditions for a simulation of flows and water levels on 11 January 1982 are obtained from gauging stations in the offshore area of the estuary by use of weighting functions obtained from simulations with other models of conditions of September 1975 in the offshore area. The simulation was made first without taking into account the effects of the varying density in the estuary. By operating the model in this mode a direct comparison with a hydraulic model could be made. In the verification simulation, pressures resulting from salinity differences were included in the comparison. An average salinity distribution was an input at the start of the simulation. Simulation results indicated a very good agreement between observed and computed transport rates through the Hammen, Schaar, and Roompot. A good agreement between observed and computed water levels was also obtained. The simulation in which the pressures resulting from salinity were included had a better agreement with observed data than the simulation without the salinity.PAW