Geography of Kazakhstan the water in Kazakhstan is polluted by industrial effluents, pesticide and fertilizer residue, and, in some places, radioactive elements. The most visible damage has been to the Aral Sea, which as recently as the 1970s was larger than any of the Great Lakes of North America save Lake Superior. The sea began to shrink rapidly when sharply increased irrigation and other demands on the only significant tributaries, the Syr Darya and the Amu Darya (the latter reaching the Aral from neighboring Uzbekistan), all but eliminated inflow. During the Soviet Era, Kazakhstan received water from Tajikistan and Kyrgyzstan, and Uzbekistan, Turkmenistan,
Seto Inland Sea Channel, which in turn connects to the Pacific Ocean. The western part of the Seto Inland Sea connects to the Sea of Japan through the Kanmon Straits and to the Pacific through the Bungo Channel. Each part of the Seto Inland Sea has a separate name in Japanese. For example, refers to the strait between Ehime, Yamaguchi, and Ōita prefectures in the western portion of the sea; is the open expanse west of the Geiyo Islands, near Hiroshima prefecture; and refers to the expanse between Yamaguchi prefecture and Suō-Ōshima. There are also many straits located between the major islands, as