River Ribble

Question 1

Rock type

Answer 1

upper course of Ribble is Millstone Grit with few pore spaces and therefore increased overland flow

Question 2

soil

Answer 2

peat in the upper course with is a major source of groundwater, slowing down increase in discharge

Question 3

shape and size of db

Answer 3

elongated basin which results in water taking more time to reach channel, basin is also very big with extensive floodplains

Question 4

rainfall

Answer 4

rainfall is evenly distributed around the year with infiltration excess overland flow after summer thunderstorms. Saturation excess flooding common at end of winter

Question 5

urbanisation

Answer 5

tributary runs through Burnley suburb, with rapid discharge as water is directed into river

Question 6

agriculture

Answer 6

lower Ribble, overstocking with sheep has led to vegetation degradation resulting in increased soil erosion. Peat cover has been lost due to fires