First, the VMM will in this command the ecological effects of the measures packages in the river basin management of the Scheldt, and Meuse let calculate and analyze. The draft action program for Flanders proposes measures to improve the ecological quality of water. Primarily measures on organization and management of watercourses and generic measures concerning nutriëntniveaus a positive impact expected on the ecological quality. To estimate the effect is based on their own experience and knowledge (expert knowledge). In this study, which will serve as (part of) the ex ante evaluation of the basin plan. ask for the ecological effects (based on EQR) of the scenarios to estimate the action program for Flanders based on two data mining techniques: neural networks and decision trees.