In the first part of this master job was assessed a geographical feature of Utena region. In the same part was described natural condition and natural recourses of territory. In this job specific attention was given to define objects of social geography and to evaluate sectors of urbanization, transport‘s infrastructure, education and industry. The second part represents creation methodic of a visual Digital database of Utena region. To analyze the digital database was indited informative, representing spatial distribution of photographed location maps. In the other part of this job was described an internet web site www.utenosapskritis.info , which was created to represent the Digital database. In this part also was supposed the educological use of this digital database to the creative worksheets and cognitive programs. This master job is dedicated to everyone who is interested in Utena region. Created the visual digital database of Utena region has extensive adaptability worth.

Work object – Vyžuona river, which has 26 km lenght, is left affluent of Šventoji river, belongs to subbasin of Šventoji river and runs from northeast to southwest of Lithuania. Work aim – identify water quality and bounded with it live organisms of Vyžuona river. Work tasks – analyse physical-chemical water parameters of Vyžuona river, identify varietal composition of organisms, define and evaluate contamination of river objects. Work results – After the reasearch was made there was defined that Vyžuona river in Utena town (1 km from Krašuona river and Vieša river junction) belongs to average contaminated rivers category measuring by parameters of water quality: common nitrogen quantity 1.9 times exceeds permissible quotas, 68.6 % of common nitrogen is composed of nitrate nitrogen, BDS7 quantity 2,7 times exceeds the LDK, concentration of phosphates 2.3 times exceeded permissible quotas. Krašuona river and Vieša river runs trough private houses section, which has no central sewer and that is the reason why mentioned rivers are bearing domestic contaminants into Vyžuona river. According to 2004-2006 data below the outlet from drain mechanism of UAB „Utenos vandenys“ refinement system there was found concentration of phosphorus which averagely 1,75 times, common nitrogen 1,1 times and BDS7 1,7 times less in comparison with river part in centre of Utena town above UAB „Utenos vandenys“. That may be explained by UAB „Utenos vandeys“ affect, which drains large amount of enough... [to full text]