The river Tees case study Flashcards
How is the time of year a physical factor affecting flood risk
In the summer the river discharge is lower with less rain and higher temperatures
In the winter water is frozen which delays flooding but once evaporated it can lead to flooding
How are ground conditions an example of a physical factor affecting flood risk
Recent rainfall may’ve left the soil saturated so flooding is more likely
Permeable rocks and soils encourage infiltration
How is landuse a human factor affecting flood risk
Woodland and agricultural crops intercept rainfall
Deforestation leads to interception so more rainfall reaches the ground
Urban development adds impermeable concrete and drainage systems that increase the risk of flood
Geomorphic processes along the River Wye
Geomorphic procceses include freeze thaw weatheriong and massmovemnts are active
What is found in the upper course of the River Wye
(Geomorphic processes)
Impermeable shales and gritstones
How was Kaywalking become popular
Alternating bands of hard and soft rock near Rhayader result in a series of ‘white water’rapids
How has Hereford been eroded into a wide flat valley
Because there is weak mudstone and sandstone south of Hereford
How has a steep sided Wye Valley gorge been created
Erosion of carboiferous limestone between Goodrich and chepstow
What is the Average annual rainfall of Herfeord
2,400 mm-potential for flooding
