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,
Kazakhstan–Uzbekistan relations Kazakhstan–Uzbekistan relations Kazakhstan–Uzbekistan relations refers to the relations between the neighbouring Republic of Kazakhstan and Republic of Uzbekistan. The last President of Uzbekistan Islam Karimov has visited Kazakhstan several times. Both Kazakhstan and Uzbekistan were part of the Soviet Union before its official dissolution in 1991. At the start of the 21st century, 96% of the international border between Uzbekistan and Kazakhstan had been determined. In 2001, after mutual agreements, the border line in only three disputed areas (Bagys, Arnasai and Nsan) remained undrawn. By September 2002, Kazakhstan and Uzbekistan had fully resolved the course of their 2,440 km-long shared