Water and carbon cycles: Case study: river catchment

Figure 1 shows discharge and rainfall for a river catchment during a storm (data are illustrative, written for this paper).

Hour	0	6	12	18	24	30	36
Rainfall (mm/h)	2	14	6	1	0	0	0
Discharge (m³/s)	8	11	26	41	33	19	12

Analyse the data shown in Figure 1.

With reference to a river catchment you have studied, assess the extent to which human activity has changed its water cycle.