WATER RESOURCES IN ARID REGIONS 91 
Kairouan 
a 
200 ae 
@89 
Kebili 
+ 
+ 
28 | + 
@ Foum Tataouine ne 
4931-1934 + 
50 
Scale in kilometers 
Position of the Mean Annual 
Isoheyet for the Periods 
1931-1934 and 1944-1947 
® 1564 Normal amount of precipitation, 
1901-1950 
Isohyet of 200 mm. 
—— — Isohyet of 700 mm. 
e+ Ghadames 
Tunisia, Position of isohyetes in 1931-1934 and in 1944—- 
Figure 2. 
1947. Annual averages for 4 years. 
