TY - JOUR N2 - The irrigation system control is identified as a complex hierarchical process of stochastic nature, at the head of which the uncertainties, caused by random variations of meteorological factors (climate) and diversion capacity regime from irrigation canals, were laid. Under such conditions application of the determinate methods for irrigation system control regarding the effectiveness surrenders to the formalistic and empirical methods. The most appropriate method is the developed by us, method of preventive control. As a result of retrospective analysis, to each system status, for example, diversion capacity, it is fixed the factors which lead to its changes, for example, rain layer or total evaporation. To every consequence “factor – system status” it is fixed the indicator and it is determined the probability of its exceeding in retrospective series. The control is in following of such indicator dynamics, forecasting of the most probably changes within system status and adjustment of the water delivery regime to canal reaches with diversion capacity regime from irrigation canals by means of standard preventive graphical chats of water flow control within hydraulic structures and pumping stations. Use of such control method allows to minimize the uncertainty influence, also it does not require the major modifications in the design and engineering infrastructure. As an exception can be the measures, directed to the increase of self-regulating qualities of irrigation systems, namely the ability of on-line water volume control, which is regulated in the idle capacities, provided in canal beds or special reservoirs. The example of such decision in practice is the Kakhovskaya irrigation system in the South of Ukraine. The use factor of water resources on this system reaches 0.85, the technological discharge water does not exceed 7%, the deficit of productive moisture reserve in soil at the end of interirrigation period does not exceed 20% and all these data were obtained under adverse weather conditions. L1 - http://journals.pan.pl/Content/116895/PDF-MASTER/%5B20834535%20-%20Journal%20of%20Water%20and%20Land%20Development%5D%20Irrigation%20system%20control%20under%20uncertainty%20conditions.pdf L2 - http://journals.pan.pl/Content/116895 PY - 2008 IS - No 12 EP - 36 KW - irrigation KW - water distribution and use control A1 - Kovalenko, Peter A1 - Mikhaylov, Yuri PB - Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute DA - 2008 T1 - Irrigation system control under uncertainty conditions SP - 27 UR - http://journals.pan.pl/dlibra/publication/edition/116895 T2 - Journal of Water and Land Development ER -