Approved Budget
Cost components Cost in millions(LKR)
Buildings: Academic Departments - (20,0000 Sq.m) 1035.00
Buildings: Common facilities - (3050 Sq.m) 157.00
Buildings: Accommodation : (6750 Sq.m) 350.00
Equipment and Books 790.00
Furniture 105.00
Total 2437.00
Approved Cadre (For first year Academic Programme.)
Positions Number
Senior Lecturers: 10
Teaching Assistants/Instructors 05Technicians 01
Computer application Assistants 02
Laboratory Attendant 02
Other Supporting staff 09
Total 29
The Vision of the Faculty of Engineering
The Vision of the Faculty of Engineering is to be a well recognized centre of Engineering education and research in Sri Lanka.
The Mission of the Faculty of Engineering
The Mission of the Faculty of Engineering is to produce resourceful and skilful Engineers to enjoy global citizenship and pursue
professional career with advance learning and research relevant to regional and national development.
Research Activities Planned
Lagoon Development in Jaffna
Water Management in Kilinochchi
River Basin Development in Vanni
Mini Hydropower Generation
Appropriate Technology Development
Components of Jaffna Lagoon Scheme
• Northern Barrage at Thondamanaru
• Vadamarachchi Lagoon
• Bridge at Vallai of Vada. Lagoon
• Bridge at Chavakachcheri -Road
• Bridge at Thalayady - Pallai Road
• Some Flood Bund in Lower Places
• Elephant pass lagoon Chundi kulam Spill Cum Causeway
• Elephant pass Peripheral Channel
• Link Canal
• Elephant pass Bridge (already closed)
• Some flood Bund in lower places
Components of Jaffna Lagoon Scheme (Cont.)
• Upparu Lagoon
• Ariyalai Barrage
• Separation Bund at Kappoothu
• Flood Bunds in Low Places
• Bridge at Koppay – Kaithady Road
• Bridge at Madduvil – Puththoor Road
• Valukaiaru Lagoon
• Arali Barrage
• Cluster of ponds
Problems
Un controlled pumping and no planning for recharge of ground water is causing severe threat to the ground water potential as well as quality of water in Jaffna peninsula
Due to the non maintenance of the salt water exclusion system in Jaffna peninsula, sea water intrusion has taken place in to the land area
Many thousands of acres of fertile land has become saline and abandoned with out cultivation in Jaffna peninsula
Many hundreds of dug wells have also been abandoned due to salinity
History and Proposal of JL Scheme
1879--- Mr. Twyneham GA, NP, has proposed Damming the sea water from entering tothe lagoons – - Given up due to big flood disaster
1913--- Mr. Fesling GA, NP, Took it up the proposal and given up
1916---Mr.Horesburg started the part of the project, Blocked the Culverts across Pointpedro – Chavakachcheri road – It was functioning well from 1920 to 1923
1942--- Mr.Webb proposal came up – Thonadamanaru Barrage Constructed
1947 – 1953, Ariyalai Barrage constructed -1955
1962--- Eng.S.Arumugam has proposed converting Elephentpass lagoon and Vadamarachchi lagoon in to Fresh water lakes to accelerate the leaching process.
(Map 2)
It got failed – because
Sea water seepage through Kandy Jaffna road bridge
Damage of Eastern closure bund due to the settlement of subsoil below the bund
Proposal from Irrigation Department in 1976
• Eastern closure bund of Elephant pass lagoon of 4700ft with the spill cum causeway of7000 ft.
• Access road of 6 miles also planned to be improved
• Link canal of 2.5 miles with regulator
• Imp.to Thondamanaru Gates
• Repairs to Ariyalali Barrage Gates
• Separation Bund at Kaputhu
• Imp. to all Flood bunds
Benefits were anticipated
• Reclaiming 11,000.00acs of non arable land
• Supplement 20,000.00acs of rain fed cultivated land for good
• and assured yield
• Ground water improvements in the peninsula
• Livestock improvements in the lagoon surrounding area
Jaffna Lagoon Scheme – Objective, Details and Benefits –Prof.V.Navaratnarajah ( Presentation Held in 1993)
He has developed ;History
Water Balance of peninsula
Components of the JL Scheme,
In 1969, the people of Vadamarachchi, were able to do
cultivation from lagoon water, and getting benefits of
good Ground water table.
Benefits,
1. Additional cultivation for cash crops and paddy cultivation
2. Receiving good water for their Consumption
3. Fresh water Fishing
4. Development of livestock by having good pasture land
All the Benefits were given in figures and highly recommended the
project Implementation.
Upparu project – K.E.Kumarasamy
He has mentioned in his report,Effort of Mr. K.Balasingam, to bring the Mahawali water to
Jaffna Lagoon through Kanagarayan Aru in 1940Webb proposals were implemented by the effort ofMr.T.Murugesampillai AGA, during 1948-1955, and the
Positive impacts were;1. Karanawai and its surroundings were became good water area2. Avarangal tharavai became fertile cultivable area3. Very good response from the people of that area for the expansion
of the projectNegative impacts were;
1. Salt harvesting has failed in Karanawai2. Prawn cultivation also failed
The system has failed, due to No proper maintenance Result of negative impactsHe further stated the several efforts made by the Jaffna people,to set up the Jaffna lagoon scheme in place.
Land and Water development of Jaffna peninsula- Eng.M.RatnamHe has mentioned in his report, History of Jaffna and JL scheme.Water balance of Jaffna peninsula,
Requirement of the people
(25Gal/capita)
20,000 Acft
Req.for cultivation
(40,000 * 2 acft)
80,000 Acft
Losses 10,000 Acft
50% of additional req to cater for the dry year 55,000
Total 165,000 Acft
48” of rain fall will pro in 50 sq mile of centre portion of Jaffna
(1/3 will go to the savings)
42,000acft
Conversion of lagoon in to Fresh water lakes 40,000.Acft
By renovating Ponds, lakes, and drains 10,000
Short fall of 60,000, to 75,000 acft of water could be saved
by having
Converting Jaffna lagoon into Fresh water lake
Rain water harvesting
Making barriers of fresh water flows to the sea in keerimali and some area
Thondamanaru Fresh Water scheme and its benefits- S.E.Joseph
It was mainly related with fishing, he has divided theVadamarachi lag into 4 sectors and analysed the fish productionwith family details (Map 4)
Suggestion to have some portion for fishing in Thondamaru toVallaiTo have barrage at mullipalam to have 5 ft of fresh water frommathurankeny to Mullipalam.
Land Use of Upparu, Elephent pass lagoon and adjoining area –Prof. S.Balachndran ( Geographical section, Jaffna university), Mr.K. Rajendram, & Mr.S.T.Rajasooriyar
Land area were divided into 6zones and usage was analysed
Highly recommended the project for agricultural activities(Map 5)
Agricultural usage of the surrounding area of Jaffna Lagoon-Dr.A.C.Vivehananthan, DD, Agriculture research, Northern region
Height of the land area in Jaffna, varies from 0-15M in
respect of MSL (map 001)
He has analysed in his report, the dependability of
Agriculture and fish farming, in related with
physical conditions of the area.
Reasons for salinity and recommendation for avoiding or
improving salinity condition for the purpose of
agriculture
Recommendation for the protection in spreading
salinity from the adjoining salt water area
• Providing contour Bunds and creating good land area for cultivation
• Deep ploughing before the dry condition of the land area, will avoid capillary continuity.
• Creating agro forestry will act as wind belt for the protection of the land area from spreading salt dust
• Salt water exclusion Bund
Recommendation for the reduction of salinity in the land area
• Providing side drains and constructing bund across the slope and allowingthe water to drain through the ground
• Encourage growing MARSH PLANTS to absorb salt from the ground
• Growing salt resistant varieties of plants
• Usage of Organic fertilizer in bulk
Jaffna lagoon Scheme with Fishing and Fish related Cultivation-Mr.K Sithravaivelu, Jaffna University, and K Selvavinayagam
They started with history of JL scheme
They analysed the positive and negative impacts in related
with fishing 528 Met.Tonne fish and fish related items could be produced in
Vadamarachchi lagoon and it is 9.3% of Northern Production (1983Data)
114Tonne of Prawn and its related items could be produced in Vada.Lagoon . it is 0.1% of the production of NP
Some poor people specially women will loos e their income but they couldbe replaced with very attractive income by having fresh water fishcultivation
Fresh water fishing, Floating Net fish cultivation, Prawn cultivation, Payfishery sport fishing could be encouraged in the fresh water area
• Since they proved the positive impact was very much more
than the negative impact, it was highly recommended
Tondamanaru Lagoon Development for profitable sea cultivation-Mr. Veerakulasingham, Polikandi, Valveddithurai
He was totally disagreeing for the construction
of barrage and converting the salt water in to
fresh water
He stated that the salt content in some well water
was increased from 8.6 % to 27.2 % ( But his
facts and figures ware contradicting with others)
He has proposed totally a different proposal.
(Map 6)
Sea related benefits of Elephent pass lagoon-K.A.Stanislas, Kaddaikkadu, Mulliyan
• Elephent pass lagoon is having 14mile in length, 2 to 5miles width area.During October – December, sea water intrusion takes place in to the lagoon
During December.- February, rain water of 400 sq.mile, flush into the EPlagoon, and excess water pass it to sea through Chundikulam.
Northern and southern sections of the EP lagoon, is with Kandal, Kanna,Potpaththai (Type of mangroves). These mangroves are very much useful tonatural prawn cultivation as well as bird sanctuary.
During these water transaction, lot of Prawns, fishes, crabs, and cuttlefishgets into the lagoon
2000 families are benefited with the salt water lagoon
He was suggesting to improve the lagoon to suit the requirements of theJaffna lagoon
(Map 7)
• Existing Features
Thondamanaru Barrage
Total length 628ft
Ariyalai barrage
540ft length
No of upper gates 18
Size 20ft*4ft
Sill 0
No of Gates 42
Size 5.5ft* 5.0ft
Sill -1.0MSL - Crest +4.0MSL
No of lower gates 13
Size 20ft * 3ft
Sill -3
No of subsidiary sp gates 16
Size 20ft * 2ft
Sill +2
Tot.Area of Jaffna 400 sq.ml
Vad lagoon area 30 sq.ml
Upparu lag.area 10 sq.ml
EP lagoon area 40sq.ml
Catchment area of Vad.Lagoon
Tot.Area of Jaffna
115sq ml
Catchment area of Upparu 85sq.mls
Catchment area of EP 363sq.ml
Further studies and final investigations
Section of the peripheral bund ( it is advisable to have clay core and rock fill
bund to function as spill cum bund)
Width and discharge of the two peripheral channels and channel leads to Vad.
Lagoon have to be decided ( 5000 cusecs and 250 to 300 ft BW)
Is the opening of EP Bridge to be reopened to discharge the flood water –
western portion to the sea
Is it possible to issue water from the Iranaimadu tank to supplement drainage
water, when it is not enough to cater the nominal demand of water to
Vad.Lagoon
Need for Research
• Lot of data were collected and investigationscompleted and it was available in IrrigationDepartment in early eightees. But now it is notavailable for our reference
• We have to start collecting data toscientifically proof after research the actualimprovement and development needed to all thelagoons in Jaffna peninsula in future to addressthe salinity intrusion problem.
Data Collection Needed
• Sixty data collection points to be introduced– Thondamanaru lagoon – 30 points (Ten points along the lagoon and three each
perpendicular to that in 300 m interval)
– Upparu lagoon – 18 points (six points along the lagoon and three each
perpendicular to that in 300 m interval)
– Valukaiaru lagoon – 12 points (four points along the lagoon and three each
perpendicular to that in 300 m interval)
The location to be fixed with coordinates and mapped
• Data to be collected monthly• Water level
• Salinity
• Ph
• Electrical conductivity