You need to know the problems of water supply in the UK (which is basically there is enough water for us all but lots falls in the north and west, whereas people mostly live in the south and east). Also you need to know about the case study of one reservoir in the UK. we look at Rutland Water for this … there is a lot of good information for this in the revision guide (here’s the page)
Also this powerpoint is a very useful one slide summary of the case study Managing the UK_s water linked to Rutland
Finally here is an exam question from 2013 higher paper you could attempt to text how well prepared you are ….
“Discuss the issues which result from building dams and reservoirs” (8 marks)