Irrigation Potentials in Africa

191 Pages·1998·10.19 MB·English

Assessment of irrigation potential in Africa is of prime importance for planning of sustainable
food production in the continent. The present study combines a review of existing information
no noitagirri laitnetop yb yrtnuoc htiw na hcaorppa gnisu a cihpargoe gnoitamrofni metsysot
assess land and water availability for irrigation on the basis of river basins. The results of this
ydde up ytodgs lnoneali voee dh deo tthhdrttloeupmoe h r eslsburfeeh dsconurtaaeser
planners at national and regional levels for work aiming at sustainable water resources
development in Africa.

Foreword
noit asdgieiwrer iIsva a ygryeno tki tdsivscod res aor.nuienffaaicheriwceclgoisaiotrhrfWpA
ylrae n%04 fno oli ats rcee uum hstdo dt’locmedurot lcpra,rifgdorinwgraarl ieh terugi frof-bus
nara haacSirfA si ylno .%01 roF t ssoemirtnuo cfo eht , ngoniigdeurl cenmios ylrodoepwodne
htiw ,retaw ylno a llams trap fo eh telbali arveataw si nwardhti wrof ,esu gniwo ot eht etatsfo
.erutcurtsarfn itnemegana mreta wf otnempolevedrednu
tnemssessA fo noitagirri laitnetop si fo emirp ecnatropmi rof gninnalp fo elbaniatsusdoof
s tl snaniai ixcte einhnretof tiAnotopa igntioarm rreiolfbnaired i .sntnon oienCtn icieuthdntoorcp
,sei r tteunsbuuoacc efbo eh t e sglr raesanbrlome i uvnt f nioaloerinahsrntneo etifmngoiiedreht
nacirf Are tsaewc rsueorsieurqer na hca ogyrncpinpreautssni eshntoocb nihtiw eht yrtnuocdna
.nis arbev ihrc aneiht isweirtnu ogcnoma
ehT tnese rypd ustesnibmoc a weiver fo ngoniittasmirxoe f nnnoi oliatiatgniertroi pybyrtnuoc
ytriolfib a m lsd er isnndteoaeaonsttvsliayaastswaam rcoif hn gpihn aci hrasatg ouionrweapgpa
noitagirri no eht sisab fo revir .snisab ehT tnese rlpa-trneevmenorivn eseussi detaler otretaw
.tnenitno ceh tn otnempoleve dnoitagirr io tsegnellah croja meh tf oemo sthgilhgi htnemeganam
ehT stluser fo siht yduts dna eht ygolodohte mdepoleved ni eht troper dluohs eb lufesuot
srehcraeser dna srennalp ta lanoitan dna lanoiger slevel rof krow gnimia ta elbaniatsusretaw
.acirf An itnempoleve dsecruoser
stnemegdelwonkcA
, dsfenèoha rtLcuraaFM- n hanteoiJiwtarob a, lnnleiokc n ned ereyrFrbaaK ptserar owpspiehrT
e hhtt idwemrofr eypd u fstaotslus ee rhndtoes ast.biIO AfnFooisiv itDnempolev erDet adWna
ecnatsissa fo lare v:essrotubirtn oycdder FeleagrethcaN rof eht lios dna niarr e,tytilibatiuscuL
tslereV rof eht noitagirri retaw ,stnemeriuqer ecirtaeB irodoeT-iznecserC rof ehtcihpargoeg
.tnempoleve dnoitagirr if ostceps alatnemnorivn eeh tro fizuofle Bdemh Adn a,metsy snoitamrofni
ehT troper saw deweiver yb tr e,bnoa Rmmkangiu rmhBuariAdnaK dna seu q,czaoJlbahCohw
.tnemevorpm iro fsnoitseggu sdn astnemmo clufes udedivorp
ehT lanif spam ere wderaperp yb oicrrraeMfail gdanTa ajaR ,kfe Rgnitide saw enod ybnailuJ
.nrefdeR-hti miSssir h yCgbnitni rrp odferape rsp atwrop eer hdt nraemmulP
Irrigation potential in Africa v
Contents
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1. INOITCUDORTN 1
2. M DES UATA DDN AYGOLODOHTE 3
laitneto pnoitagirr if onoitinifeD 3
stin ucisa beh tf onoitinifeD 3
secruos elracisy hep h ftnooitacifitnedI 4
secruos edrnaL 4
secruo sreertaW 4
stnemeriuq erret anwoitagirrI 4
laitneto pnoitagirr in onoitamrofn ignitsix ef oweiveR 4
snoitaredisno ccimonoce-oico sdn alatnemnorivnE 5
stlus eer h ftnooitaterpretnI 5
3. NOITSAGIRR IECAFRU SRO FYTILIBATIU SNIARRE TDN ALIO 11
ygolodohte mlareneG 11
riuq elrioS noitagir rri osftneme 11
seuqinhce tnoitaulavE 12
stluseR 13
4. W SECRUOS ERRETA 19
des usnoitinife ddn aygolodohteM 19
dlei ylaitnetoP 19
retawdnuo rd gnraet aewcafruS 19
secruos erret aewlbawen edrecudo rypllabo ldg nyallanretnI 20
ecnerefe rf osdoireP 20
sek adl nsadnalt emwo rnfoitaropavE 20
stluseR 21
ti ncuis a ybsbecruos erret a fwnowodkaerB 21
vi
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5. ISTNEMERIUQE RRETA WNOITAGIRR 27
ygolodohteM 27
sen onzrett agpnippo rncoitagir r finooitaenileD 28
f onoitinifeD ecneulf n fiaoe r’asnoita testami lecht 28
snoita testami lhct iswen onzrett agpnippo r fcnooitanibmoC 29
stnemeriuq erret anwoitagir r finooitaluclaC 29
stluseR 30
6. RLAITNETO PNOITAGIRR IN ONOITAMROFN IGNITSIX EF OWEIVE 43
snoitatimi ldn aygolodohteM 44
puo rngis arboj ar mesptluseR 45
nis arbev ilRagen eeShT 45
nis arbev irReg ieNhT 47
nis adba heCk aeLhT 53
nis aebl ieNhT 56
yella Vtfi RehT 64
nis aabbuJ-illebe heShT 66
nis arbev ieRriaZ/ogn oeChT 67
nis aibzebm aeZhT 70
T nisa bognavak Oeh 73
nis aobpopm ieLhT 74
nis aebgna reOhT 76
roiret nhItu oeShT 78
)arah arSo(ire thnt IreohNT 79
tsa onCaenarretid eeMhT 82
ts ato sChetW reohNT 84
ts ato sCeehWT 85
ts aloaCrt nte sCeehWT 92
ts ato sChetW ueohST 93
tsa ocCitnal thAtu oeShT 94
tsa onCae cnOaid neIhT 95
tl sa earthotsTCnaeEC 97
htettshsraTaooENC 100
Madagascar 102
sdnalsI 102
tnemsses syatila uaqtaD 103
Irrigation potential in Africa vii
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7. ETNEMPOLEVE DNOITAGIRR IN ISNOITAREDISNO CLATNEMNORIVN 127
laitnetoP tnempoleve dnoitagirr if ostcapm ilatnemnorivn e 127
noitazinil ads nganiggolretaW 128
sesaes iddetaler-ret adw neanrob-retaW 129
sriovres edr nsam a fdsotcap mliatnemnoriv nleaitnetoP 132
semehc snoitagirr if ostcapm icimonoce-oicoS 134
stcejo rnpoitagir r fisotcap meivitag een hettagit i omstevitanretlA 135
stcejor ptnempoleve dreta wf otcapm ieh tdn asdnalte wf oelo rehT 135
leh anSacir ftAs eeW h ntsidnalteW 136
sdnalt euwrugN-aijed aeHhT 137
du Seh tn olana Cielgno Jeh tf ostceffE spma wds 139
’sto ptso hd‘ nsatcap mliatnemnoriv n fesotcep slaanoigeR 141
noiger-b unsacir fhAtr odNi reahT 141
tl enBailehaS-onad ueShT 141
acir ftAs edWimuH 142
nis aebriaZ/ogn oeChT 142
tsaacEirfA 142
acir fnArehtuoS 143
noitagir r oidtetal edrraz athcap mliatnemnoriv n feyorammuS 143
8. G NOISULCNO CDN ASTLUSE RLARENE 145
secruos elracisyhP 145
dnaL 145
retaW 146
stnemeriuq erret anwoitagirrI 146
laitneto pnoitagirr in onoitamrofn ignitsix ef oweiveR 146
snoisulcnoC 147
9. M NOITAMROFN IF OSECRUO SNIA 161
viii
Listo ff igures
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1. laitnet onpoitagir r fitonemssessA 6
2. aci rsffpoAu onrig sraobjaM 7
3. noitagir reicafr ur soyftilibati unsiarr ed tnlaioS 15
4. )ae rnai s s af%anbo(oitagir reicafr ur soeflbati udsn aftlonetxE 16
5. )ae ryartn u s of%anco(oitagir reicafr ur soeflbati udsn aftlonetxE 17
6. m nksierug ilfl ay(rtnu o ycsbecruos erretaW 3 )raey/ 24
7. llafni alraun neagarevA 25
8. sen onzrett agpnippo rncoitagirrI 32
9. tamil cro fsnogylo pnesseihT snoita tes 38
10. oirane clsaitnet o:pstnemeriuq erret anwoitagir rtieN 40
11. oirane clsaitnet o:pstnemeriuq erret anwoitagir rsisorG 41
12. s eiratubi rnti asm tdi nraev irReg ieN h ftsoegrahcs iedgarevA 48
13. eli Netih Weh tdn aeli Neul Beh tf osegrahcsi degarevA 59
14. rotc agfnitim isarlaet a:wnis a ybabcir f nAliaitnet onpoitagirrI 155
15. )nis arb e,pseratc enhoill inm ia(cir f nAliaitnet onpoitagirrI 156
16. )ae rnai s sa f%abao(cir fnlAiaitnet onpoitagirrI 157
17. italup o fpyotisneD )49 9r1 odfetamits et(i neuvitartsinim d yanbo 158
18. )laitnet onpis asf %baoa(cir fnnAioitagirrI 159
19. )nis arb e,pseratc enhoill inm in(oisnap xneoitagir rri osfeitilibissoP 160
Listo fm aps
1. nis arbev ilRageneS 105
2. nis arbev irRegiN 106
3. nis adba heCkaL 107
4. nis aebliN 108
5. yella VtfiR 109
6. nis aabbuJ-illebehS 110
7. nis arbev ieRriaZ/ognoC 111
8. nis aibzebmaZ 112
9. ognavakO 113
10. nis aobpopmiL 114
11. nis aebgnarO 115
12. roiret nhItuoS 116
13. roiret nhItroN 117
14. etideM naentasraroC 118
15. ts at oshCetWroN 119
16. t stasoeCW 120
17. ts aloaCrt ntesCeW 121
18. ts at oshCetWuoS 122
19. ts acoiCtna lhttAuoS 123
20. tsa onCae cnOaidnI 124
21. tsaE lartneCtsaoC 125
22. htroN tsaEtsaoC 126