Base characteristic melioration territory "Upper Danube" inclusion round about 1.4 million ha area in Backa and Banat (Serbia, Yugoslavia) are presented in this paper. Specification problem maintenance of the drainage of system to originate because of discharge wastewater and sludge in channel and suggest in decides these problems are considered.

Relatively dense network of irrigation channels in Vojvodina is exposed to various point and non-point pollutants impacts. Therefore, deposited channel sediments-sludges can be contaminated with high concentration of dangerous and harmful substances such as polycyclic aromatic hydrocarbons (PAH). These sediments could have long lasting harmful effects on environmental status, quality and usability of channel water, and especially on surrounding agricultural soil, where dredged sediments are deposited or scattered. In this paper above mentioned conclusions are illustrated by quality analysis of specific irrigation channels sediments in terms of PAH contents in them.

The paper outlines the significance of studying and analysing sediment deposition issues in drainage canals in Vojvodina, Serbia (Serbia and Montenegro). This problem needs to be properly addressed considering the total length of the canal network, that is, the total volume of sediment to be removed by dredging if the functional performance of the canal network is to be restored and maintained. Much of the effort needs to be focused to the polluted sediments with a severe risk for the environment. Sediment pollution is caused by the point and non-point sources of pollution. Taking one drainage canal as the example, essential chemical properties of the sediment and hazardous and toxic substances contents (heavy metals, PAHSs and PCBs) are being analysed and presented in the paper.