Objective: To analyze and demonstrate sustainable increases in irrigation system efficiencies and water productivity (in both yields and returns) that can be readily adopted in irrigation schemes and farms within the Mahaweli System. Approach: The approach is in two inter-related parts; Part 1 - case study irrigation systems, and Part 2 - pilot demonstrations Inception workshop held on 10th December 2018 Report submitted accommodating comments several times. The Inception Report was finally accepted by the client on 19th July 2019 one month after the departure of the former Team Leader. The progress has been seriously affected due to above reason Up to now 6 monthly progress reports from April to September 2019 have been submitted

1. Improving System Efficiencies and Water
Productivity (ISEWP): A Component of the
Mahaweli Water Security Investment
Programme (MWSIP
Contract No:
MMDE/MWSIP/ADB/3268-SSRI/Consult/CS-2/ISEWP/ICB/2016/011
Total Budget: –USD – 2,896,943.14
- EURO - 230,085.49
- LKR - 119,882,663.31
( Total Budget in USD – 3,830, 656.70 )
Consultant – M/s Egis-Eau International Joint Venture in Association
with Resources Development Consultants Pvt. Ltd. (Sri Lanka)
Project No: 47381-002-SRI(SF)

2. ISEWP Terms of Reference
• Objective: To analyze and demonstrate sustainable increases in irrigation system
efficiencies and water productivity (in both yields and returns) that can be readily adopted
in irrigation schemes and farms within the Mahaweli System.
• Approach: The approach is in two inter-related parts;
– Part 1 - case study irrigation systems, and
– Part 2 - pilot demonstrations
• Locations: System Pilot demonstration site Extent (ha)
1 Silwathgama tank cascade system in
North Western Province Canal Project
(NWPCP) - 11 tanks
Tholombugollewa
subsystem (4 tanks)
100
2 Stage 3 of Minipe Left Bank Canal
Project (MLBCP).
DC 47 area 173
3 Huruluwewa Irrigation Scheme LB DC 3 area 180
4 Left Bank of Maduru Oya in System B DC 6 – 104 area 213

3. Project
location map

4. Comparison of pilot demonstration sites
Characteristics Tholombugollewa
subsystem (NWPCP)
DC 47 (Minipe
LB)
LB DC 3
(Huruluwewa)
DC 6 – 104
(Maduruoya
LB)
1 Climate – Agro-
Ecological region
IL 3
(Low country IZ)
IL 2
(Low country IZ)
DL 1b
(Low country DZ)
DL 1c/ DL 2b
2 Soil types RBE and LHG RBE, LHG and
Alluvials
RBE and LHG RBE, NCB,
LHG and
Alluvial
3 Extent (ha) 100 173 180 142
4 No. of farm families 123 174 160 142
5 Average farm size (ha) 0.82 0.99 1.13 1.0
6 Irrigation source North Western
Province Canal
Minipe anicut Huruluwewa
reservoir
Maduru Oya
reservoir
7 Presence of small tanks 4 tanks 01 tank No tanks 01 tank
8 Existing crops other than
rice
Maize, groundnut, big
onion, chilli,
vegetables
Water melon and
ground nut
Maize, soybean,
vegetables
None

5. Progress - Remarks
• Inception workshop held on 10th December 2018
• Report submitted accommodating comments several times.
• The Inception Report was finally accepted by the client on
19th July 2019 one month after the departure of the former
Team Leader.
• The progress has been seriously affected due to above
reason
• Up to now 6 monthly progress reports from April to
September 2019 have been submitted

6. Overall Progress - Summary
• Physical progress: 23.7%
• Financial progress: 33.0 %
• Person months spent: 45.0 %
• Time spent: 36.1 %

7. Progress achieved: Part 1
Part 1 – case study irrigation systems (1. System inventory, 2. Performance benchmarking, 3. Assessment
of opportunities for High Value Crops (HVC), 4. System Operation Plan (SOP), 5. Monitoring and
evaluation
1. System inventory:
i. Condition assessments from the reservoirs to pilot demonstration sites of Maduruoya, Minipe and
Huruluwewa irrigation schemes were completed.
ii. Digitized Base Maps were prepared for all four systems
iii. Preparation of Geo-data base for system inventory was completed for Maduruoya and Huruluwewa
iv. Soil maps were reproduced and digitized for Maduruoya, Huruluwewa and Minipe
2. Performance benchmarking:
i. MASSCOTE (Mapping Systems and Services for Canal Operation Techniques) reports were prepared for
Huruluwewa, Maduruoya and Minipe Schemes and are available for use in performance benchmarking.
3. Assessment of opportunities for High Value Crops (HVC):
i. A report on assessment of growing High Value Crops (HVC) was prepared and submitted by the
International Marketing Specialist
ii. Interactive farmer meetings were held in all 4 pilot demonstration areas with private and state sector agencies
to identify HVCs for each area.

8. DIGITIZED BASE MAPS
Huruluwewa
Maduruoya
Minipe

9. BASE MAP of Silwathgama
Tank Cascade System

10. Maduruoya digitized
soil map
Huruluwewa digitized
soil map
Minipe Stage III
digitized soil map

11. Progress achieved: Part 2
Part 2 – Pilot demonstrations (1. Pilot farm selection, 2. Intervention designs, 3.
Implementation programme, 4. Monitoring and evaluation)
1. Pilot farm selection:
i. Pilot demonstration areas were selected through field initial assessments made with counterpart staff
and FO representatives for all four systems.
2. Intervention designs:
i. Digitized Base Maps were prepared for all 4 demonstration areas
ii. Soil surveys were carried out and soil maps for assessing land suitability were prepared for DC 6 –
104 area in Maduruoya and LB DC 3 in Huruluwewa.
iii. Farmer participatory Seasonal planning workshops were held for all 4 demonstration areas targeting
maha 2019/20 seasons.
iv. Land & Water Productivity Enhancement Models (LAWPEM) were prepared for all 4 pilot
demonstration sites.

12. Maduruoya Pilot demonstration area Huruluwewa Pilot demonstration area
Digitized Base Maps of Pilot Demonstration Sites

13. Silwathgama Pilot demonstration area
Digitized Base Maps of Pilot Demonstration Sites
Minipe Pilot demonstration area

14. Vajirawea (DC6) soil map
Huruluwewa (DC3) soil map

15. Land suitability maps
Huruluwewa

16. Study on Vegetation Changes
Vegetation index as on 2018-12-17 Vegetation index as on 2019-05-06

17. PILOT
DEMONSTRATIONS
Identified interventions Working agencies
Productivity (Rs./kg), (Rs./m3)
• Improved water management practices
(maintenance, Alternate Wetting and Drying)
• High value rice cultivation (medicinal rice,
Munchi Come, Bhasmathi)
• Commercial crops
• New technology promotion (Parachute
method, Internet App.)
• Marketing linkage development
• Quality seed paddy production
• Additional income avenues (nursery, fodder)
Training Awareness Input supply ‘Govipola’App
 Farmer Organization
 ISEWP
 Irrigation Management Division/ Irrigation Dept.
 Dept. of Agriculture
 Department of Agrarian Development
 Institute of Fundamental Science
 Smallholder Agribusiness Partnership Programme
 Crop Tronix Pvt., CIC, Haleys, Prima
Analysis –
incremental
benefit
Improve/
Remove/
Recommend
Land and Water Productivity
Enhancement Model (LAWPEM) Minipe Model
Private sector

18. PILOT DEMONSTRATIONS
Identified interventions Working agencies
Productivity (Rs./kg), (Rs./m3)
• Ornamental fishery in paddy fields
• Improved water management practices (maintenance,
Alternate Wetting and Drying)
• High value rice cultivation (medicinal rice, Munchi
Come, Bhasmathi)
• Additional income avenues (nursery, fodder)
• Quality seed paddy production
• New technology promotion (Parachute method, Internet
app)
• Commercial crops (banana, pineapple, papaya, chilli,
ginger)
Training Awareness Input supply ‘Govipola’App
 Farmer Organization
 ISEWP
 Mahaweli Authority of Sri Lanka
 Irrigation Management Division.
 Dept. of Agriculture
 Department of Agrarian Development
 Institute of Fundamental Science
 National Aquatic Development Authority
 Smallholder Agribusiness Partnership Programme
 Crop Tronix Pvt., CIC, Haleys, Prima
Analysis –
incremental
benefit
Improve/
Remove/
Recommend
Land and Water Productivity
Enhancement Model (LAWPEM)
Maduruoya
Model
Private sector

19. PILOT
DEMONSTRATIONS
Identified interventions Working agencies
Productivity (Rs./kg), (Rs./m3)
• Improved water management practices
(maintenance, Alternate Wetting and Drying)
• High value rice cultivation (medicinal rice,
Munchi Come, Bhasmathi)
• Quality seed paddy production
• New technology promotion (Parachute
method, Internet App)
• Value Chain Development
• Additional income avenues (nursery, fodder)
• Commercial crops
Training Awareness Input supply ‘Govipola’App
 Farmer Organization
 ISEWP
 Irrigation Management Division/ Irrigation Dept.
 Dept. of Agriculture
 Department of Agrarian Development
 Smallholder Agribusiness Partnership Programme
 Institute of Fundamental Science
 Crop Tronix Pvt., CIC, Haleys, Prima
Analysis –
incremental
benefit
Improve/
Remove/
Recommend
Land and Water Productivity
Enhancement Model (LAWPEM)
Huruluwewa
Model
Private sector

20. PILOT
DEMONSTRATIONS
Identified interventions Working agencies
Productivity (Rs./kg), (Rs./m3)
• High value rice cultivation (medicinal rice, Munchi
Come, Bhasmathi)
• Quality seed paddy production
• Organic fertilizer production and promotion
• New technology promotion (Parachute method,
Alternate Wetting and Drying, , Internet App, GAP)
• Additional income avenues (nursery, fodder)
• Commercial crops (banana, pineapple, papaya, chilli,
passion fruit, guava, groundnut)
• Marketing linkage development
• Processing and value addition
Training Awareness Input supply ‘Govipola’App
 Farmer Organization
 ISEWP
 Irrigation Management Division/ Irrigation Dept.
 Dept. of Agriculture
 Department of Agrarian Development
 Smallholder Agribusiness Partnership Programme
 Institute of Post Harvest technology
 Crop Tronix Pvt., CIC, Haleys, Prima, Seehela
Farm
Analysis –
incremental
benefit
Improve/
Remove/
Recommend
Land and Water Productivity
Enhancement Model (LAWPEM)
Silwathgama
Model
Private sector

21. Performance Reports Produced
• Monthly Progress reports – 6 (April – September 2019)
• FAO-MASSCOTE (Mapping System and Services for Canal Operation
Techniques) Reports for Maduruoya, Minipe and Huruluwewa
• Options for improving system efficiencies and water productivity and farmer
incomes
• Assessment of market opportunities for High Value Crops (HVC)
• Mission Report of International Irrigation Planning and Design Engineer on
Huruluwewa

22. Awareness programmes

23. System Inventory

24. Performance Benchmarking

25. Participatory Planning

26. Soil investigations for land suitability

27. Staff Training