This Book is an Application of an Artificial Intelligence Models (ANFIS AND ANN) to solve pertinent Water Resources Planning, Development and Managements problems in a typical developing counrty, Nigeria. It is a vogue in Geography particularly, Hydrological Modelling for River Discharge Forecasting which has serve as an eye opener that the problem bedeviling Water Resources Development in the developing country are not Insummontable. With carefulness and easy of the uniqueness of the Models, River Discharge,and any other Geographical variables that may require Forecasting for Policies that will enhance sustainable development are now made easy.