keeping rivers healthy in an era of climate change
DESCRIPTION
by Nishadi Eriyagama January 17, 2014 Colombo, Sri Lanka International Water Management Institute (IWMI)TRANSCRIPT
www.iwmi.orgA water-secure world
Phot
o: S
anjin
i de
Silv
a/IW
MI
Keeping rivers healthy in an era of climate change
Nishadi EriyagamaJanuary 17, 2014Colombo, Sri Lanka
www.iwmi.orgA water-secure world
www.iwmi.orgA water-secure world
Dry Zone
Wet Zone
Intermediate Zone
Highest temperature increase in agricultural areas
Observed climatic changes Temperature
Source: Zubair et al. 2005
Anuradhapura
Badulla
Rainfall Change in distribution of annual rainfall
Southwest monsoon: Stable (Yala)
Northeast monsoon: reduced and variability increased (Maha)
www.iwmi.orgA water-secure world
www.iwmi.orgA water-secure world
Climate change vulnerability ‘hot spots’
Ratnapura
Nuwara Eliya
Anuradhapura
Highly vulnerable areas are:
• Primary food-producing areas - rely heavily on water availability for agriculture
• Mapping method developed by IWMI shared with partners and used to create the Sri Lanka National Climate Change Adaptation Strategy 2011-2016
• Currently studying how best to use the ancient tank system to adapt to climate change
• Providing capacity building and expert advice to the Ministry of Environment and Renewable Energy
Vulnerability index
www.iwmi.orgA water-secure world
www.iwmi.orgA water-secure world
Climate change will affect our rivers
The Sri Lanka Environmental Flow Calculator (SLEFC) is a software package to estimate how much water should be left in rivers to ensure they remain healthy
This methodology is being used by the Dam Safety and Water Resources Planning Project (DSWRPP) in the National Water Resources Master Plan and the Mahaweli and Mundeni Aru Basin development plans
www.iwmi.orgA water-secure world
www.iwmi.orgA water-secure world
ස්තූතියි Thank you
நன்றி�
For a climate resilient Sri Lanka