Biological monitoring of running waters is a scientifically and economically valid approach for surveys and monitoring programmes to assess the water quality. "Biological Monitoring of Rivers" is a timely, up-to-date book that includes a good number of practical how-to-do chapters. It provides an up-to-date assessment of biological water monitoring. It includes practical how-to-do chapters to help the practitioner. It provides a broad survey of methods used inside and outside the EU. It gives perspectives for future applications.