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Chad

Dynamics of water use in Chad by estimates of SHI (1998)


 



 

 
1960
1970
1980
1990
1995
2000
2010
2025
                 
Popultion, mln *
3.11
3.64
4.48
5.55
6.41
7.43
9.48
12.8
Irrigation area, th.ha **
7
6
10
 
20
30
50
Irrigation area, th.ha ***
5
5
6
14
14
     
GNP, $US per capita ****
 
101
90
180
       
Water withdrawal, km 3
0.09
0.09
0.11
0.19
0.29
0.39
0.61
1.07
Water consumption, km 3
0.06
0.06
0.07
0.13
0.20
0.26
0.38
0.64
notes: * - Source: United Nations Organization
** - 1961-1993 Source: FAO Production Yearbook, 1965-1994. Rome: FAO; 1995 – 2025 - SHI 1995 forecast
*** - Source: Gleick, 1998
**** - Source: World Bank / IMF – International Financial Statistics Yearbook, 1980-1994. N.Y.: World Bank/IMF


Water use of Chad (km 3 /year) by data of different authors


 



 

author
 
year
1987
1990
2025 1)
2025 2)
IIASA
withdrawal
1993
 
0.20
   
WRI
withdrawal
1991-93
0.18
     
WRI
withdrawal
1996-98
0.2
     
WWDS
withdrawal
1998
 
0.19
0.6
0.4
UNSY
withdrawal
1992
 
0.19
   
Gleick
withdrawal
1993
0.18
     
Gleick
withdrawal
1998
0.18
     
IrAf
withdrawal
1995
0.18
     

notes: all estimates include water use for agriculture, industrial & domestic needs;

1) – high estimates

2) – low estimates

IIASA – Kulshreshtha S.N., 1993. World Water Resources & Regional Vulnerability: impact of future changes. Luxenburg: IIASA.

WRI – World Resources (1991-1992, 1992-1993, 1994, 1996, 1997-1998 ) – N.Y.: Oxford Univ. Press.

WWDS – World Water Resources. Demand & Supply: 1990 to 2025., 1998. Scenarious & Issues. Colombo:IWMI.

UNSY – United National Statistical Yearbook 1992, 39, 1993– N.Y..:UN.

Gleick, 1993 - Water in Crisis. A Guide to the World's Fresh Water Resources, 1993. Edited by P. Gleick. N.Y. Oxford Univ.Press.

Gleick, 1998 - The World’s Water. The Beneficial Report on Freshwater Resources 1998-1999, 1998, Peter Gleick, Washington, D.C. Covello, California.

IrAf – Irrigation in Africa in figures, 1995. Extract from report 7. Rome: FAO.