Water user association (WUA) Ashirmat is located in the Khorezm region in south-western Uzbekistan. The region is greatly influenced by agricultural production dominated by cotton, rice and wheat. Due to very low precipitation, the region depends on irrigation water input from the Amu-Darya from which the water is channeled off through huge canals. Within this enormous irrigation system, WUA Ashirmat is located at the very end and thus, is endangered by water shortages and depends on upstream conditions. The work regards data from the period between May and September 2009, which started...