groundwater study in jaffna peninsula

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

Groundwater study in Jaffna Peninsula

Herath ManthrithilakeJanuary 17, 2014Colombo, Sri Lanka

Phot

o: S

arat

h G

unas

ingh

e/IW

MI

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

‘Hot spots’ where agro-well density is very high

19,905 agro-wells identified(excluding Delft Island)

(IW

MI

stu

dy,

201

1)

Over 200 wells/ sq.km(1 km2 = 100 ha)

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

Number of agro-wells on the rise in Valikamam South

• Over irrigation 130 - 160%

• Over use of ag. Chemicals 200%

• Over abstraction of groundwater• Excessive pollution

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

Salt water intrusion

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

D

Farm

PublicD + HG Paddy Banana Highland crops

Max Per

Concentration of nitrate during January 2011

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

www.iwmi.orgA water-secure world

ස්තූතියි.

Thank you.

நன்றி�.

Fostering sustainable water use