1995 Volume 9 Issue 4 Pages 285-291
The drought of 1994 in northern Shikoku was very severe, but Shikoku island as a whole has large amount of rainfall which causes flooding in the southern part. Regional unbalance of water resources is the main cause of the water problems in Shikoku island: flooding in the South and drought in the North. The circumstances of water in Sikoku island which cause the above mentioned problems are described from the view points of geography, regional rainfall distribution, discharge and water resources development of main rivers. The reasons for the recent tendency of increasing water shortage in Matsuyama are insufficient water resources development of groundwater or surface water, increase of water demand due to the growth of population and the change of life style to use more water. Besides these reasons, extremely small amount of rainfall in summer made the shortage of water disastrous in Matsuyama in 1994.
