The text will provide the erosion model user with the tools to evaluate different erosion models and select the most appropriate for a specific purpose compatible with the input data available. The first portion of the book describes how models are developed, and shows the advantages and limitations of each model. The second portion explains how the models are used in practice. Each chapter describes a specific problem, and the model criteria, selection and implementation needed. Problems covered range from agriculture, construction, pollution and climatic change.