geographical processes relevant to water management © karen devine 2010
TRANSCRIPT
Geographical Geographical Processes Processes Relevant to Relevant to
Water Water ManagementManagement
© Karen Devine 2010
The Water CycleThe Water Cycle
The The water cyclewater cycle is is the key geographical the key geographical mechanism for mechanism for carrying water carrying water through the 4 through the 4 spheres.spheres.
The water cycle The water cycle processes water in processes water in the states of liquid, the states of liquid, solid and gas.solid and gas.
© Karen Devine 2010
The Water CycleThe Water Cycle
It moves through It moves through the processes of:the processes of:
a)a) precipitationprecipitation
b)b) infiltrationinfiltration
c)c) percolationpercolation
d)d) run offrun off
e)e) evaporationevaporation
f)f) condensation.condensation.
© Karen Devine 2010
The Water CycleThe Water Cycle
Australia’s water Australia’s water supply can be supply can be affected by run-off affected by run-off which includes:which includes:
a)a) seweragesewerage
b)b) pesticidespesticides
c)c) herbicidesherbicides
d)d) fertilisersfertilisers
e)e) waste waterwaste water
f)f) other chemicals.other chemicals.© Karen Devine 2010
Artesian BasinsArtesian Basins
Artesian basinsArtesian basins are are also a source of also a source of freshwater for a freshwater for a quarter of Australia.quarter of Australia.
Australia’sAustralia’s Great Great Artesian BasinArtesian Basin is is the largest artesian the largest artesian basin in the world.basin in the world.
© Karen Devine 2010
Artesian BasinsArtesian Basins
Artesian basins Artesian basins form when form when permeable rock is permeable rock is found between found between layers of layers of impermeable rock.impermeable rock.
© Karen Devine 2010
Artesian BasinsArtesian Basins
The The porousporous or or permeable rock is permeable rock is capable of holding capable of holding large amounts of large amounts of ground water. ground water.
These rocks are These rocks are known as known as aquifersaquifers..
© Karen Devine 2010
Artesian BasinsArtesian Basins
BoresBores can be can be sunk to tap sunk to tap into the water into the water in the in the aquifers.aquifers.
© Karen Devine 2010
Artesian BasinsArtesian Basins
Yet, many see Yet, many see that this water is that this water is inefficiently inefficiently utilised and utilised and much is lost much is lost through through evaporation and evaporation and infiltration.infiltration.
© Karen Devine 2010
Question Time?Question Time?
Watch Film on the Watch Film on the Great Artesian BasGreat Artesian Basin.in.
Explain how Explain how artesian water is artesian water is being inefficiently being inefficiently used.used.
© Karen Devine 2010