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Geographical skills: Unlocking the real value of geographical fieldwork

Studying hydrographs

This article looks at the discharge hydrographs of rivers and explains why they differ in time and space

■ All specifications: Water cycle

When the quantity of runoff from a river basin is measured continuously, a graph of flow variation over time can be drawn. This discharge hydrograph will vary with the physical characteristics of the basin, the state of the water balance and the impact of recent weather events on runoff response. Three timescales are commonly analysed:

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Geographical skills: Unlocking the real value of geographical fieldwork

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