Fluss ; Einzugsgebiet ; Hydrologie ; Watersheds; Drainage basins in geomorphological perspective; the basis; approaches to the drainage basin; illustration of an approach; topographic characteristics; rock and sediment characteristics; vegetation characteristics; landscape evaluation and response units; association between drainage basin characteristics; the measurement problem; precipitation input; losses; precipitation watershed interactions; water in channels; sediment on slopes; sediment in channels; sediment yields; measurements of solute dynamics; rates of erosion or denudation; some logistics of drainage basin instrumentation; catchment inputs; the water balance; runoff response; sediment and solute production; process interrelationships; modelling of catchment response; water and sediment in river channels; channel cross section; hydraulic geometry; the drainage basin; the micro-sale; the meso-scale; runoff dynamics; the continental and world scale, the influence of man.