siva worldwaterdaypresent

ePHg;ghtid

1. kdpj ghtid + Rfhjhuk; 2. tptrhak; 3. kpd; cw;gj;jp4. Nghf;Ftuj;J5. kPd;gpb6. ifj;njhopy;7. nghOJNghf;F

cyfpd; nkhj;j ePHtsk;

1.36 x 108 kpy;.n`f;.kPw;.

97.2%

cg;G ePH

2.8%

ed;dPH

epy Nky; kl;l ePH

2.2%

epyj;jb ePH

0.6%

MW ciwgd

pgpw

0.01%

2.13

% 0.04%ngwf;$baJ

ngwKbahjJ

0.23% 0.33%

kdpjghtid0.26%

cyf ePH tsk;

Nkw;gug;G ePHePiu• Fbg;gjw;F• cliyr; Rj;jpfupg;gjw;F• tptrhaj;ij Nkw;nfhs;tjw;F• kpd;rhu cw;gj;jpf;F• kfpo;r;rpahd tpisahl;LfSf;FNghd;w gy;NtW nraw;ghLfSf;Fg;

gad;gLj;Jfpd;Nwhk;.

kiotPo;r;rp ejpfs; fpzWfs; eP&w;Wf;fs;Mfpatw;wpypUe;J ePiug;

ngw;Wf;nfhs;Sfpd;Nwhk.;

gpuNjrj;jpw;Fg; gpuNjrk; ePHngwg;gLk; khHf;fq;fs; NtWgLfpd;wd.

,tw;wpid

• kz;zpd; jd;ik• kz;zpd; tif• jiuj;Njhw;w mikg;G Nghd;w fhuzpfs; epHzapf;fpd;wd.

•MWfs; caHe;j Nkw;gug;gpypUe;J jho;e;j gFjpfSf;$lhfr; nrd;W fliyr; nrd;wilahky; ePHj;Njf;fq;fSf;F jpir jpUg;Gtjd; %yk; ePH Nrfupf;fg;gLfpwJ.

•kiotPo;r;rpapdhy; tUk; ePu; ePNue;J gpuNjrq;fis mile;J Fsq;fs;, thtpfspy; Nrfupf;fg;gLfpd;wJ.

,t;thW Nrfupf;fg;gLk; ePH gy;NtW topfspy;

tpuakhfpwJ. 1.ePH ePHj;Njf;fq;fspd; gLf;iffspDhlhf

cl;Gfy;.• ePH epyj;jpw;$lhf cl;GftpLk; jd;ik

Fiwthf ,Ug;gjw;F Fsg;gLf;iffs; fspkz; tPjk; $Ljyhf cs;sitahf ,Uj;jy; Ntz;Lk;.

• kzy; kz; tPjk; $Ljyhf ,Ue;jhy; ePH cl;GftpLk; jd;ikAk; $Ljyhf ,Uf;Fk;.

• kuq;fspd; ,iyfs;, rUFfs; ePHg;gLf;iffspy; gbe;J ePH cl;GftpLk; jd;ikiaf; Fiwf;fpd;wd.

2. Nkw;gug;G ePuhdJ epyNkw;gug;gpw;F

mz;ikapy; ,Ug;gjhy; ePH Mtpahjy;

%yk; $Ljyhf ,of;fg;gLfpwJ.

• nghpa kuq;fspdhy; Fsq;fSf;F epoy; nfhLg;gjd; %yKk;>

• fhw;wpd; <uypg;igf; $l;Ltjd; %yKk;>

Mtpahjypd; msitf; fl;Lg;gLj;jyhk;.

3.ePHkl;l NtWghL fhuzkhf ePHj;Njf;fq;fspypUe;J mizf;fl;bDhlhff; frpe;J (gf;f tbg;G) ntspNaWfpwJ.

• ,jw;F 30-35% fspkz; cs;s kz;iz cgNahfpj;J mizf;fl;Lfis fl;LtJ rpwe;jJ.

• ,t;thW fpilf;fg;ngwhtpbd; mizf;fl;bd; eLg;gFjpf;F fspkz; NrHj;J ,Wf;Ftjd; %yk; ePH frpe;J nry;Yk; msitf; fl;Lg;gLj;jyhk;.

• tTdpah,kd;dhH khtl;lq;fspy; Nkw;gug;G ePH tptrhaj;jpw;Nf $Ljyhfg; ghtpf;fg;gLfpwJ.

• new;gapHr;nra;if ngUk;Nghfk;,rpWNghfk; vd;W ,UKiw nra;ag;gLfpwJ.

• ngupa ePHg;ghrdf; Fsq;fspypUe;Jk; rpwpa ePHg;ghrdf; Fsq;fspypUe;Jk; tha;f;fhy;fspd; %yk; ePHtoq;fg;gLfpwJ.

• ,tw;wpy; mNefkhd jpl;lq;fspy; ePHj;jl;Lg;ghL fhzg;gLfpd;wd.

,tw;wpw;fhd fhuzq;fs;:1.jpwe;j tha;f;fhy;fspDhlhf gapHr;nra;if epyq;fSf;F ePH nrd;wilAk; NghJ Vw;gLk; ePupog;Gfs;2.ePHg;ghrdf;Fsq;fspy; ePUl;GFjy;, mizf;fl;bDhlhf gf;ftbg;G Vw;gly;,ePH Mtpahjy;3.fpUkp ehrpdp, cuk; ghtpg;gjw;F Nkyjpf ePiug; ghtpj;jy;.4.gjpNtl;by; cs;s tp];jPuzj;jpYk; ghu;f;f mjpfsT nra;if gz;zg;gly;.5.ePiur; rpf;fdkhfg; ghtpg;gJ gw;wpa mwpTk; Mu;tKk; Fiwthf ,Uj;jy;.

6. gioa Kiwg;gb tptrha eltbf;iffis Nkw;nfhs;sy;.

7. tptrha cgfuzq;fs;;,ney; tq;fpf;fld; Kjypad tptrhapfSf;F cupa fhyj;jpy; fpilf;fhik.

ePupog;Gfs; Vw;gLk; re;ju;g;gq;fs; Nkw;gug;G

ePUf;F mjpfk; vd;gjhy; fhyNghfj;jpy;,ad;wsT Fiwe;jsT ePiug; ghtpj;J ePiur;Nrkpg;gjd; %yk; $basT rpWNghfk; nra;tjw;F ePHKfhikj;Jt eilKiwfisf;ifahs Ntz;Lk;.

•,jid gapHr; nra;if njhlq;f Kd;dH jpl;lkply; Ntz;Lk;.•,t;thW jpl;lkpLk; NghJ

fpilf;ff; $ba tsq;fs; ePHg;ghrdj; jpl;lq;fspd; nraw;ghLfs; tptrhak; nra;if gz;zg;gLk; fhzpapd; tp];jPuzk; fle;j fhy mDgtq;fs; tptrhapfspd; r%fg; nghUshjhu epiyikfs;

Mfpad fUj;jpw; nfhs;sg;gl Ntz;Lk;.NkYk;•ngUk; Nghfj;ij jpl;lkpl;lgb Fwpj;j fhyj;jpy; Muk;gpj;jy;.•gapH nra; jiuia ,aYkhd tiu rkg;gLj;jy;.•tha;f;fhy;fis Jg;guthf itj;jpUj;jy;.•ePsk; $ba tha;f;fhy;fspy; gapHr;nra;ifia jtpHj;jy;.

• gapupd; ntt;NtW tsHr;rpg; gUtq;fisf; fUj;jpw; nfhz;L mjw;Nfw;g ePiug; gha;r;Rjy;. • rpW Nghfj;jpy; ney; tay;fSf;F mUfhikapy;

cs;s tha;f;fhy;fspypUe;J tUk; frpT ePiug;

gad;gLj;jp rpW jhdpaq;fis cw;gj;jp nra;jy;. • ePHg;ghrd Kfhikj;Jtj;jpy; ePHg;ghrdj; jpizf;fsq;fs;>tptrha jpizf;fsq;fs;> fkj;njhopw; jpizf;fsq;fs; Mfpad gq;fhw;Wfpd;wd.•,it vy;yhtw;iwAk;tpl ePH Kfhikj;Jtj;ijr; rpwg;ghf eilKiwg;gLj;jypy; ngUk; gq;fspg;G tptrhapfisr; NrHe;jJ.

ePHg;ghrd jpl;lnkhd;wpd; gpujhd ghfq;fs;

ePuhdJ fpilf;fg; ngWk; topfs;; :-•kio•Fsq;fs;•Mo;fpzW•eP&w;Wf;fs;

ePHj;Njf;f jpl;lq;fspd; Nehf;fq;fs; :-•ePHg;ghrdk;•FbePH trjp,tPl;Lg; ghtid•kpd;rhu cw;gj;jp•nts;sg; ngUf;iff; fl;Lg;gLj;jy;•ed;dPH kPd;tsHg;G

ePHj;Njf;fq;fSf;F ePuhdJ fpilf;fg;ngWk; topfs;

•kio %yk; Neubahf•kio %yk ePNue;J gpuNjrq;fis te;jilAk; ePH %yk;•MWfSf;F FWf;Nf mizf;fl;ilf; fl;b ePHj;Njf;fq;fSf;F jpir jpUg;Gtjd; %yk;

1.rpwpa ePHg;ghrdj; jpl;lq;fs;: 200 Vf;fH tiu2.eLj;ju ePHg;ghrdj; jpl;lq;fs;: 200-1500 Vf;fH3.ngupa ePHg;ghrdj; jpl;lq;fs;: 1500 Vf;fUf;F Nky;

Fsj;jpd; FWf;Fntl;L Kfk;

1

2

4

3

56

1. Fsj;jpd; Mff;Fiwe;j nfhs;ssT. (DEAD STORAGE)2. ePupid gad;ghl;Lf;F toq;ff;$ba Mff; Fiwe;j kl;lk.; (MINIMUM POOL LEVEL)3. ePupid gad;ghl;Lf;F toq;ff;$ba Mff; $ba kl;lk;.

(MAXIMUM POOI LEVEL)4. toq;fg;glf; $ba ePupd; Mff; $ba nfhs;ssT.

(ACTIVE STORAGE)5. ePupd; Mff; $ba nts;s kl;lk;.

(HFL)6. mizf;fl;bd; cr;rp kl;lk;.

(BTL)

• SLUICE• SPILL

SPILL CREST

SLOPING APRON STILLING BASIN• fhy;tha;fs;

1.gpujhd fhy;tha;fs; (MAIN CANALS)

2.fpisf; fhy;tha;fs; (BRANCH CANALS)

3.gfpUk; fhy;tha;fs; (DISTRIBUTING CANALS)

4.tptrha fhy;tha;fs; (FIELD CANALS)

ePiur; rpwe;j Kiwapy; toq;f ePHg;ghrdf; fl;Lkhdq;fs; (IRRIGATION STRUCTURES) mikf;fg;gLfpd;wd.

• TURN OUT,OFF TAKES

• REGULATORS

• CULVERTS AND DRANAGE UNDER CROSSING

MEASURING DEVICES (msf;Fk; fUtpfs;;)

• PARTIAL FLUME

• BROAD CRESTED WEIR

ePh; Ve;J gpuNjrk;

MW

ePh; nfhs;Sk; gpuNjrk;

ePHg;gha;r;rw;

gpuNjrk;

ePh;g;ghrd tha;f;fhy;;

Rw;whly; khriljYk; ePHg;ghrdj; jpl;lq;fSk;

01. jpl;lj;jpd; ePNue;J gpuNjrk;a. ePNue;J gpuNjrj;jpy; rpWrpW jpl;lq;fis

ePHg;ghrdj; jpizf;fsj;jpd; mDkjpapd;wp eilKiwg;gLj;jy;. b. ePNue;J gpuNjrj;jpy; Nrid kw;Wk;

gapHr;nra;iffis mjpfupj;jYk; fhLfis mopj;jYk;.

02. Fsj;jpd; ePHgpbf;Fk; gpuNjrk;

a. ePHgpbf;Fk; gpuNjrj;jpy; Kaw;rpfis Nkw;nfhs;Sjy;

b. Fsj;Jf;nfd xJf;fg;gl;l xJf;fPl;L epyj;jpy; Kaw;rpfs; Nkw;nfhs;Sjy;.

03. ePHtoq;fYk; kw;Wk; tbfhy; tha;f;fhy;fSk;

a. ePHtoq;fy; tha;f;fhy;fspd; xJf;fPl;Lg; gpuNjrj;jpy; gapH

nra;jy;.

b. tbfhy;tha;f;fhy;is eputp mtw;wpy; gapH nra;jy;.

04. Fsj;jpy; gad; ngWk; fhzpfs;

a. xJf;fPl;L kw;Wk; Nkl;L epyj;jpy; gapHnra;jy;.

b. xJf;fPl;L kw;Wk; jho; Nkl;L epyq;fl;F jw;fhypf mDkjpg;gj;jpuk; toq;Fjy;.

05. ,tw;iwj; jPHg;gjw;fhd MNyhridfs;.a. ePNue;J gpuNjrq;fspy; Kaw;rpfisf; fl;Lg;gLj;jy;> Gjpa ePHg;ghrdj; jpl;lq;fisNah> gioa ePHg;ghrdj; jpl;lq;fis tpupTgLj;jiyNah ,g;gFjpapy; jLj;jy;.

b. ePH gpbf;Fk; gpuNjrq;fspy; Kaw;rpfis fl;Lg;gLj;jy;.

c. xJf;fPl;L epyq;fis gpwH cupik nfhz;lhLjiyNah> my;yJ cj;juTg;gj;jpuk; toq;FjiyNah jLj;jy;.

d. ,tw;wpy; <LgLk; tptrhapfspy; eltbf;if vLj;jy;.

e. jpl;lq;fspy; jw;fhypf mDkjpg;gj;jpuk; toq;FKd; ePHg;ghrdg; nghwpapayhsupd; rk;kjj;ijg; ngwy;.

f. vy;yhtw;wpw;Fk; Nkyhf ntspf;fs cj;jpNahfj;jHfs; mur epyq;fis tptrhapfs; ifafg;gLj;j ,lk;nfhlhJ tpopg;ghf ,Uj;jy;.

ePHg;ghrdj;jpl;lk;(1)rpwpa ePHg;ghrdj;jpl;lk; < 200 ACS(2)ngupa ePHg;ghrdj;jpl;lk; > 200 ACS

(a) PROVINCIAL SCHEME(b) INTER PROVINCIAL SCHEME

(a) PROVINCIAL COUNCIL(b) CENTRAL GOVERNMENT

ngupa ePHg;ghrdj; jpl;lk;

1] eLj;ju (Medium) 2] ngupa (Major) 200 1500 Vf;fH 1500 Vf;fupw;F Nky;

Fwpg;G :- 1990 ,y; mikr;rH fhkpdp jprhehaf;fhtpd; jdpg;gl;l rpghuprpy;

1000Vf;fupw;F Fiwe;j vy;yhj;jpl;lq;fSk; khfhzrigf;Ff;

ifaspf;fg;gl;lJ ,J gpw;fhyj;jpy; kPsg;ngwg;gl;lJ.

1856 – PADY LAND IRRIGATION ORDINANCE (a) RULES(b) GAN SABBAS –OFFICERS & FARMER

REPRESENTATIVE(c) VEL VIDANE

1876 – VILLAGE COUNCIL

1887 – FORMATION OF P.W.D

1900 – FORMATION OF ID

1956 – IRRIGATION ORDINANCE

1958 – PADY LAND ACT(1) SECURITY TO TENNENT CULTIVATION(2) ESTABILISHMENT OF CULTIVATION COMMITTEE (NO VEL VIDANE SYSTEM)

DIRECT IMPACT ON ALL MAJOR IRRIGATION SCHEMESAND LAND SETTLEMENT SCHEMES. BOTH IRRIGATION ORDINANCE AND PADY LAND ACT CONTRADICT IN MAIN ASPECTS.

1968 – IRRIGATION ORDINANCEPOWER TO CULTIVATION COMMITTEE

1970 – AGRICULTURAL MODIFICATION LAW BY THIS CULTIVATIONCOMMITTEE GET THE POWER THIS CONTRADICT 1968 IRRIGATION ORDINANCE.

1979 – AGRARTION SERVICE ACT ABOLISHMEN OF PRODUCTION COMMITTEE AND

FORMATION OF CULTIVATION COMMITTEEPOST OF CULTIVATION OFFICER

1988 –

1988 – AGRARIAN SERVICE AMMENDMENT ACTFARMER ORGANISATION

1994 – AMMENDED IRRIGATION ORDINANCE.

HIGHLIGHTS OF IRRIGATION AMENDMENTS OF JUNE 1994

1.SUBSTITUTION FOR “CULTIVATION COMMITTEE” THE EXPRESSION OF “FARMERS ORGANIZATION”

2.THE EXEMPTION OF PAYMENT ON IRRIGATION RATE IN RESPECT OF INTER PROVINCIAL IRRIGATION SCHEMES.

WHERE FO’S HAS TAKEN OVER THE O & M OF WHOLE OR PART OF DISTRIBUTORY

CANALS

3.FO’S THAT HAS TAKEN OVER O & M OF “D” CANALS CAN IMPOSE AND RECOVER A LEVY.

4. PROVIDES FOR ESTABLISHMENT OF PROJECT MANAGEMENT COMMITTEES AND SUB PROJECT MANAGEMENT COMMITTEES.

5. FO COMPOSITION IN P M C SHOULD BE NOT LESS THAN FIFTY PER CENT OF TOTAL MEMBERSHIP THE OFFICALS WILL BE REPRESENTATIVE FROM.

- D I- L C- D A S- D AGRICULTURE- C – OF CO- OPERATIVE DEVELOPMENT- D I V SECS- ANY OTHERS

6. P M SHOULD BE APPOINTED BY THE SECRETARY IN CHARGE OF THE SUBJECT OF IRRIGATION.

7. P M C CAN HOLD PRE CULTIVATION MEETING AND MAKE RECOMMENDATION TO DIV SECS. THE MEETING OF P M C SUMMONED BY DIV SECS NOW CALLED “CULTIVATION MEETINGS” AND TAKE DECESIONS PROVIDED TWO THIRD OF FO REPS IN PMC ARE PRESENT

ePHts Kfhikj;Jtk; (S.W)1. ePH Ve;J gFjp Kfhik. (MWfs; mlq;fyhf)2. jpl;l Kfhik.3. ghrdg; gFjp Kfhik.

1

* Reservoir *

** Electric power ***** Navigation

***Divertion

Dam

Side Flow

Irrigation

Divertion Navigat

ionDomestric water

supplySalinity control

(To prevent solt water intretion)

SRILANKA

Area – 25,332 Sq m

Land 24,997

Inland water 335

RAM FALL

Dry zone90” - 200”

South WestSouth Center

Wet zone30” - 60”

North WestNorth EastSouth East

jpl;l Kfhik1.Fixing Priority2.Operation of system

ghrd Kfhikj;Jtk;

1.Water Management2.Land consolidation

Land consolidation will be the ultimate out come of the proper water resource . In respect of Irrigation sector

ePH jpdk; ??

ePH01. vy;NyhUf;Fk; ePH02. xU Flk; ePupd; tpiy?03. ePH tpuaj;ijj; jLj;jy;04. ePH guhkupg;gpy; $l;L Kaw;rp05. gpw; re;jjpapdHf;Fk; ePH

ePH ts Kfhikj;Jtk;

,Ug;G

ghtid guhkupg;G

ePH1. mwpKfk;

2. Nkw;gug;G ePHi. mikTii. ePHg;ghrdj; jpl;lq;fSk; ePH tpuaKk;

fl;Lg;gLj;jYk;.iii. ePh;g;ghrdj;jpl;lj;jpd; gpujhd ghfq;fs;iv. ePHg;ghrdj; jpl;lq;fSk; Rw;whly; khRglYk;.v. ,yq;ifapy; ePHg;ghrdr; rl;lq;fs;.

3. epyj;jb ePHi. ,yq;ifapy; epyj;jb ePupd; ngWif.ii. epyj;jb ePupd; cUthf;fKk; guk;gYk;.iii. epyj;jb ePupd; ,af;fk;.iv. epyj;jb ePupd; ghtid vy;iy.v. epyj;jb ePupd; juhjuk;.

4. Mw;Wg;gLf;iffSk; ePupd; gad;ghLk;i. mUtp MWii. Nkhjiu MW

cyf ePH jpdk;22.03.2002

fUj;juq;FePHg;ghrdj;

jpizf;fsk;tTdpah.

ePHtsk;1. epyj;jb ePHtsk;2. epy Nky; ePHtsk;

1.epyj;jb ePHtsk;1. epyj;jpd; jd;ik2. ePHg;ghtid tpfpjk;3. kPs; cl;nrYj;Jk; msT4. nraw;if Kiwahy; Nrkpj;jy;

LIMITATION OF USAGE OF GROUND WATER

1.SALT WATER INVESTIGATION2.LOWERING W.T

SOLUTION

1.SAFE EXTRACTION

2.ARTIFICIAL RECHARGE(1). INJECTION(2). TEMPORARY FLOODING(3). IMPROVING IN CRITICAL HIGH

PERMEABLE LOCATION

SRILANKA1. NORTH WESTERN AND NORTHERN LIME STONE BELT

DEPEND SOLELY ON G.W2. DRY LOW LAND ZONE

(VAVUNIYA,ANURADHAPURA,POLONNARUWA)IRRIGATION DEVELOPMENT…………………

OCT –JAN SURFACE WATER(S.W)REST GROUND WATER(G.W)

3. COSTAL BELTBOTH GROUND WATER & SURFACE WATER

4. WET ZONEMAINLY SURFACE WATER

GROUND WATER FORMATIONBED ROCK AQVITON1.IGNAOUS ROCK(jPg;ghiw) HARDLY POROUS LESS

WATER HOLDINGWATER HELD IN FA…….

2. METAMOPHIC(cUkhwpa ghiw)HARDLY POROUS LESSWATER HOLDINGWATER HELD IN FA…….

3.SEDIMENTORY (milaw; ghiw)WHETHERING AND EROTION

SAND STONE

LIME STONE

DUE TO POROUS NATURE HELD,WATER

DUE TO CALCIUM CARBONATE SOLUTION IN CARBONIC ACIDSOLUTION CANALCARVERNSHIGH YIELD OF GROUND WATER

QUALITY OF GROUND WATER1.ctHj;jd;ik (BRACKISHNESS)2.fbdj;jd;ik (HARDNESS)

<150PPM GOOD POTABLE WATER(PARTS PER MILLION)1500> >150MANAGABIC FOR DOMESTRIC USE

SEA WATER 20,000 24,000 PPM

TESTADD SILVER NITRATE

<100 PPM SOFT WATER> 300 PPM HARD WATER> 1000 PPM PROHIBITEDFOR USE

REMOVAL BY HEATING CONVERSION OF INSOLUABLE SALTS AS

SEDIMENTS

1

2

epyj;jb ePHj;jhq;fp OSAKA CITY(UNDER GROUND DAM)

fly;

BED ROCK

F.R

G.W

DEPTH > 60m NOTE: F.B > 10mTO PREVENT WATER LOGGISTCROSS SECTION

90 Cm

55Cm

GROUND WATER TERMINOLOGY 1.WATER SHED / BASIN2.PRECIPITATION3.SURFACE FLOW4.RUN OFF5.INTERCEPTION6.TRANSPIRATION7.EVAPOTRANS PIRATION8.PERCULATION9.INFILTRATION10.AQUIFER11.GROUND WATER

(1) G.W(2) D.G.W

12.WATER TABLE13.GROUND WATER CONTOUR

ePH tPo;gbT/kioflj;jg;gLk; Mtpahfp ePH

EVAPOTRANSPRATION

MtpahFk; ePh;

fly;

ePH Njf;fq;fs;/fhy;tha;fs;

ePH Njf;fq;fs;

gf;ftbg;G ePHSEEPAGE

,wq;F ePHPERCOLATION

cl;GFk; ePHINFILTRATION

epyj;jbapy; cs;s ePHGROUND WATER FLOW

ePhpay; tl;lk;

cg;G ePH

1 2a3

4 MSL

GWLFWZ

BWZ

b

5

c

Fig: GROUND WATER CONDITIONS IN THE JAFFNA PENINSULA (AFTER C.H.I STRIMANNE,1952)

(a)Red Earth,(b)Jaffna lime stone,(c)Granite gneiss,(MSL)Mean sea level,(GWL)Ground water level,(FWZ)Zone of fresh water saturation,(BWZ)Probable zone of brackish water:(1)Dry well,(2)Well of puttur type,(3)Ordinary successful well,(4)Spring of keerimalai type,(5)Solution cavern

A RAINY SEASON

SALT WATER

FRESH WATERM.S.L

BED ROCK

B DRY SEASON

M.S.LFW

BWSW

BED ROCK

Fig Groundwater conditions in coastal sands.1. Fresh water well, 2. brackishwater well, BW, brackishwater zone

1

2

1

2

DRY ZONE

WET ZONE

INTERMIDIATE ZONE

• COLOMBO

• JAFFNA

• TRINCOMALEE

• BATTICALOA

• ANURADHAPURA

• NUWARAELIYA

• KANDY

• MATARA

• PUTTALAM

• HAMBANTOTA

• RATNAPURA

1

2

3

1. 30” – 60”

2. 60” – 90”

3. 90” – 200”

epyk; - 24>997ePH - 335 (Sq Mile)

MIOCENE LIME STONE

VIJAYAN COMPLEY(MATOMOPHRS)

HIGH LAND SERIS (IGNASIOUS)

Miocene lime stoneJurassic(Gondwana)Vijayan complex

High land series

•

Galle

Colombo •

•

•

Mannar

Puttalam

Jaffna

Batticaloa

Trincomalee

Vavuniya

AnuradhapuraTabbowa

Kandy

Badulla

•

•

•

•

•

•

•

Fig: Sketch map of geology of Sri Lanka

Recharge areaWater table

Piezometric surface

Ground surface

Flowing wellWater table well

Artesian well

Water table

Unconfined aquifer

Confining stratum

Confined aquifer

Impermeable state

mizf;fl;LRIP RAP

HFLFSL

xU tifahd xU rPuhd kz; (Homogenious soil)

FILTER

RIPRAP

TRANSTION FILTER

ePUl;Gftplf; $ba gFjp

ePUl;Gf tplh eLg;gFjp (IMPERVIOUS CORE)