curtin university is a trademark of curtin university of technology cricos provider code 00301j...
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Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
CURTIN UNI WATER STRATEGY 1. THE GLOBAL CHALLENGES2013
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
What are we seeing changing ?
Regional scale
Real and observed trends
Long term
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
PERTH AIRPORT - RAINFALL
400
500
600
700
800
900
1000
1100
1200
Running Average
Annual Average
CURRENT TRENDS
Series1 1961 to present 1981 to present 2001 to present
753 mm
730 mm
675 mm
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
19601965
19701975
19801985
19901995
20002005
20102015
0
10
20
30
40
50
60
PERTH AIRPORT - TEMPERATURE
Number of days over 35°C
CURRENT TRENDS
Above 40°C 35°C - 40°C 30°C - 35°C0
10
20
30
40
50
60
1961-1981 1981-2001 2001-2011
Number of days
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
FUTURE TRENDS
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
% CHANGE – MEAN ANNUAL RAINFALL
15 different climate change models
13 are predicting lower rainfall by 2030
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
FUTURE TRENDS – PERTH AIRPORT
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
CHANGE – MEAN ANNUAL TEMPERATURE
15 different climate change models
15 are forecasting higher mean annual temperature by 2030
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
WEATHER FORECAST TO 2030
DRIER WINTERS
HOTTER
LONGER & MORE FREQUENT HEAT WAVES
MORE EVAPORATION
LESS STORMWATER
LESS SUPERFICIAL GROUNDWATER
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
IMPACTS ON THE UNIVERSITY
DRIER WINTERS LESS STORMWATER MORE EVAPORATION
HOTTER LONGER & MORE FREQUENT
HEAT WAVES
AIR CONDITIONING LOAD PROVISION OF SHADE FIRE RISK OUTDOOR WORK TREE DEATHS
LESS SUPERFICIAL GROUNDWATER LESS RAINFALL STORAGE
JF ‘LAKE’ DAMPLAND SHORTER GROWING SEASON DEEPER GROUNDWATER/QUALITY
TREE DEATHS
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Drought proofing Perth
CURRENT SOURCES
WATER CORP. 10 YEAR PLAN
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
Gaps between groundwater yields and demands
Negative values are deficit
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
WATER CORPORATION – 10 YEAR PLAN
Access deep groundwater aquifers
Reduce the use of superficial aquifers
Clear pines off Gnangara aquifer
Replenish deep aquifer with recycled wastewater
Expand desalinisation
Increasing wastewater recycling for irrigation
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
WATER USES IN PERTH
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
WA GOVT POLICIES TO REDUCE WATER USE
Daytime watering ban from bores – since 2002
Winter ban on irrigation
Minimum water use standards
WEMP for > 20 Ml users
Increase in scheme water costs
Metering of non-residential groundwater bores
Licence for non-residential groundwater abstraction
Curtin University is a trademark of Curtin University of TechnologyCRICOS Provider Code 00301J
INFLUENCES ON WA WATER MARKETS
Demographics & social shifts
• Higher water resource demands
• Demand may exceed supply
• Reputational risks
• Increased pressure for more visibility of water saving infrastructure; water use targets
State economical dynamics
• Increased water prices reflect true valueand cost of supply & infrastructure
Political & regulatory priorities
• Maintain availability and quality
• Maintain central supplier (?)
• Increased reporting
• Entrenched irrigation bans
• Policy changes on wastewater recycling
• Planning over catchments & groundwater
Innovation & technological advances
• High efficiency technologies
• Climate modeling
• Desalination
• Wastewater recycling
• Groundwater replenishment
• Deep aquifer abstraction