The key questions guiding you through this chapter 'interactions of geospheres' are:

• What is meant if it is stated ‘the lithosphere, pedosphere, morphosphere, hydrosphere, atmosphere, biosphere and human sphere interact’?
• Which processes shape our watersheds in which we live?
• What do affect the availability of natural resources in a watershed and the quality of these?
• What is the hydrological cycle? Which role plays the hydrological cycle for Watershed Management?
• Which hydrological processes are important in Watershed Management?
• How can the hydrological cycle be portrayed quantitatively?
• Why is the supply of water different from watershed to watershed and from time to time?
• Which processes occur - among others - on the slopes of a watershed?
• Which factors determine soil erosion processes?
• Which influence does the human activity have on the degradation processes?
• What is the underlying force for mass movements?
• Under which circumstances are mass movements initiated?
• Which processes can aggravate mass movements?
• By which processes does a river form the landscape?
• Why is the discharge behaviour of different rivers varying?
• What is a hydrograph?
• In which ways does a river erode?
• How can the fluvial morphodynamic in a watershed be measured?
• What is determining the deposition of stream load?