The region of Southeast Srem is rich in ground waters, which is of great significance to agricultural production. The objective of this paper was to designate the zones of different groundwater types from the aspect of recharge, based on the analysis of groundwater regimes in the study area. A very complex groundwater regime in Southeast Srem, which depends on a great number of natural and some anthropogenic factors, makes it difficult to designate clearly the zones of the three main types of groundwater regime. Still, the boundaries of the zones of groundwater regime types were defined based on the results of correlation analysis of the basic factors affecting the groundwater regime. Zone I includes the climatic type of groundwater. Its fluctuation corresponds to the vertical factors of water balance (precipitation and evaporation) and it is not affected by the river water level. This zone extends North and East of the line Putinci, Golubinci, Stara Pazova, Batajnica, Dobanovci, mainly in the area of the loess plateau. Within the zone, groundwater is at a relatively great depth. Only exceptionally, in the valleys, it appears almost on the surface. Zone II includes the climatic-hydrological groundwater type, which is the transition between the climatic type and the hydrological type. The fluctuation of groundwater regime is affected both by the effect of vertical balance factors, and by the effect of watercourses. Climatic-hydrological groundwater type covers the central and the lowest part of the study area and the South part of the middle terrace. Zone III is classified as the hydrological groundwater type and it covers the riparian areas along the Sava and the Danube. The aquifer is hydraulically connected with the river Sava

The aim of this paper is a case study of a melioration region, which will show the state of the channel network, as well as the scope of the implemented maintenance measures, which resulted in the reduced functionality of the drainage system. Melioration channels are in most cases in the function of drainage, and a minor number has a double function (drainage and irrigation). The dense network of channels, erected throughout the catchment area, is capable of receiving all the design surplus water. However, during the past decade, the channel network was not maintained to the required level, which caused the reduced functionality of the drainage system. The channels are invaded by annual and perennial plants, channel cross-sections are silted with mud, there are landslides of the slopes, parts of water crosssections are blocked, etc. These are the consequences of the inadequate maintenance of the drainage system and the accompanying structures.

Drainage system Galovica is situated in southeast Srem. It occupies the area of about 100,000 ha, it has a dense channel network of 30-40 m/ha, 2,575 constructed facilities and 11 pump stations. The main channel-Galovica is 40 km long and it is one of the basic receiving channels of the surplus internal waters from the area of southeast Srem. In addition to its basic purpose, this channel has recently also become the receiving channel of the municipal waste water, agro-industrial and processing waste water, discharged without purification and causing significant pollution of the water in the channel. The aim of this paper is to study the water in the Galovica channel and the possibility of its purification in the aim of its multipurpose utilisation, especially from the aspect of soil water regime management in the conditions of water deficit in the soil. The study area is the locality Donje Polje-PIK " 7. juli". The study of water quality for irrigation shows that water quality is in harmony with the prescribed standards, pursuant to the Regulation on the admissible concentrations of hazardous and harmful substances in the soil and water for irrigation and the methods of their analysis. The water of the Galovica channel was subjected to the purification by the equipment of the Army of Serbia and the testing of chemical and microbiological characteristics of purified water shows that this equipment can purify the water of the third and fourth classes and make it sanitary safe, so that it can be used as drinking water, especially in emergency situations.

The area of Southeast Srem is rich in groundwater. Water regime of the first aquifer has a great significance from the standpoint of agricultural production. 32 piezometers were singled out and groundwater depth was measured aiming at the analysis of some groundwater characteristics. In the area of Southeast Srem, groundwater level fluctuates very widely, depending on the distance from water courses. Mean value of groundwater fluctuation in Southeast Srem amounts to 3.49m. In this area, groundwater moves in Southeast direction, i.e. in the direction of the main receiving streams of the region, the Sava and the Danube. The greatest risk of groundwater overflowing in Southeast Srem occurs in the central parts of the loess terrace and in low parts of the alluvial plain along the Sava, where groundwater level is at the depth of less than 1m

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