Presentation (Part-2) made at the District Orientation programmes of Climate Resilient Integrated Water Management Project (CRIWMP) in Kurunegala, Puttalam and Anuradhapura Districts

1. P.B. Dharmasena, 0777-613234, 0717-613234
dharmasenapb@ymail.com, dharmasenapb@gmail.com
https://independent.academia.edu/PunchiBandageDharmasena
https://www.researchgate.net/profile/Punchi_Bandage_Dharmasena/contributions
http://www.slideshare.net/DharmasenaPb
Presentation made at the District Orientation programmes of Climate Resilient Integrated Water Management Project
(CRIWMP) in Kurunegala, Puttalam and Anuradhapura Districts
PART - TWO

2. (The GIAHS Scientific Advisory Group (SAG) has officially designated the Cascaded Tank-Village
System (CTVS) in the Dry Zone of Sri Lanka as a GIAHS site, during the fourth SAG meeting held
in FAOHQs from 26th to 27th September, 2017.)

3. • A ‘cascade’ is a connected series of tanks organized within a
micro-catchment (meso catchment) of the dry zone
landscape, storing, conveying and utilizing water from an
ephemeral rivulet’.

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24. PARTIAL DESILTING CONCEPT

25. FSL
FSL
Sill level
PARTIAL DESILTING CONCEPT

26. Technically sound implementation
Peenagama maha wewa
In 2013 (surveyed)
Peenagama maha wewa
Original tank bed (simulated)

27. Technically sound implementation
Peenagama maha wewa
After desiltation (simulated)
Peenagama maha wewa
Area identified for desilting
IUCN had the flexibility of getting the best out of government agencies and the local
Community in designing and implementing the project while supplementing for gaps
with external technical assistance

32. PARTIAL DESILTING CONCEPT

33. FSL
FSL
Sill level
PARTIAL DESILTING CONCEPT

34. Technically sound implementation
Peenagama maha wewa
In 2013 (surveyed)
Peenagama maha wewa
Original tank bed (simulated)

35. Technically sound implementation
Peenagama maha wewa
After desiltation (simulated)
Peenagama maha wewa
Area identified for desilting
IUCN had the flexibility of getting the best out of government agencies and the local
Community in designing and implementing the project while supplementing for gaps
with external technical assistance