impact of water abstraction can have on the water cycle Flashcards
whats water abstraction
water is taken out of permeate rocks below the ground
ground water from?
aquifers
how does water abstraction affect the water cycle?
over abstraction will lower the water table
what is salt intrusion? what causes?
fresh water levels as so lower that salt water seeps in from the sea
what impact has water abstraction has on the chalk landscape of southern england?
river flow especially during summer months is low and upper sections of rivers dry up. lower water flow leads to poorer water quality due to the concentration of contaminants
what impacts have the London Basin faced in recent years?
with less abstraction due to deindustrialization, the water table has risen and now parts of the London Underground faces flooding issues - ground water risen up to 3 m/yr in places as early as 1990s
Who are GARDIT?
general aquifer research, development and investigation team
Whats the purpose of GARDIT?
aim to control the water table level within London to reduce the chance of flooding