The reason of construction of drainage canal system was the intensification of agricultural production and discharge of inland waters. Their construction characters are analogical to a stream. As artificial multifunctional anthropogenic elements in an intensively utilized agricultural landscape they provide different ecosystem services to populations and human society which were not paid attention yet. The aim of our study was focused on vegetation in vicinity of drainage canals. Despite their small size, the woodland patches along the primary and secondary drainage canals are important connective landscape elements and serve also as a refugium, or biocentre for several kinds of organisms. On the other hand, as the secondary drainage canals are gradually overgrown, wood vegetation develops and canals stop fulfilling their main function. Based on re-evaluation of present state of drainage canals we try to elaborate a proposal of measures of their primary functions and proposal of their multifunctional use.