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In the paper rivers, canals and levees and the technical condition of drainage localized on them are evaluated. Research was related to the needs and scope of works performed in 2013 and 2014. To ensure technical efficiency drainage systems are subject to periodic maintenance treatments. To ensure technical efficiency drainage systems are subject to periodic maintenance treatments 2,01 millions PLN was spent on sustaining and maintains of melioration devices in the activity area of Lubuski Zarząd Melioracji i Urządzeń Wodnych. The expenses concerning rivers and channels as well as mowing and sustaining flood defences devices. The other expenses were spent on three pumping station of total yield equals 6.350 dm3·s-1 influencing on area of 4069 ha. Downward trend of work amount as the result of downward trend of spending financial means was observed at analysed area. Decrease of spending financial means was about 11% in 2013 and 2014 years. Financial means allocated on current sustaining and maintains suffice only for 30 to 40% of entire basic drainage devices.

An evaluation of current technical state of land improvement devices, functioning in the area of North Wielkopolska was the aim of the research. An attempt of the evaluation of the need of maintenance of the devices was also made in this paper. The water structures being an infrastructure under management of Piła District of Poznań WZMiUW were the subject of analysis. The evaluation was made according to the method of Kaca and Interewicz. Additionally capital spending for maintenance and exploitation of land improvement devices incurred in a period 2002–2012 were also presented in the paper.