River Exe Case Study

What county does the River Exe travel through?

• Cornwall

• Devon

• Exmoor

The length of the River Exe is ____ kiometres.

Exeter is the largest city on the Exe?

• True

• False

84.4% of the catchment is underlain by impermeable rocks, predominantly ___________ ______________.

What is the main land use in the upper catchment?

• Arable farmland

• Peat bog

• Agricultural Grassland

• Woodland

The water balance equation is

Precipitation = evaporation +/- soil water storage + ___________

What percentage of the water balance on the Exe is runoff?

• 55

• 65

• 75

• 85

The pattern of discharge over a year is called the river _______

There are two key reasons for high run-off are (choose two!)

• Impermeable nature of the bedrock

• Water extraction at Wimblehall reservoir

• High volume of drainage ditches on Exmoor

• Significant areas used for agriculture

Which of these transfers would be most affected by the impermeable nature of bedrock, leading to increased runoff?

• Interception

• Percolation

• Groundwater flow

• Evaporation