| Abstract [eng] |
The key goal of this work is to identify the main problems and their causes in prevention of safety of the surface water in the Venta River Basin District. The whole territory of Lithuania is divided by four River Basin Districts as specified by Water framework directive. In order to manage the water bodies in a right manner as a first step it is needed to establish the main problems related to the water resources. For this reason to answer the key questions the data acquired within multiple years of governmental monitoring has been accumulated and analyzed. By using Geographic Information Systems the main factors of water pollution were estimated; the effect of hydroelectric power stations and very modified water bodies on water ecosystems, also the problems mentioned in the questionnaires provided by the local municipalities were evaluated. Discussion about risk water bodies and causes of their ascription to this group takes place in this final master work. Furthermore, it was estimated, why water state in observed water bodies is so poor. The funding of this work was that the quality of the surface waters in a high degree is related to the waterworks systems which are not operated by the regulated norms, which are governed by the legal acts of Lithuania Republic. Almost in every water body downstream such waterworks systems water quality has been especially poor. Also the condition of water bodies is related to the territories used by the agricultural needs but it is more difficult to establish its direct effects in these cases. After assessment of problems mentioned in the questionnaires about implemented or planning of implementation (till 2015 year) water management, environment and other projects/programmes, provided by the local municipalities, was identified, that the most important place undertakes problems with water pollution in majority of municipalities. Considering all problems which were mentioned in this work it is possibility to start implementation of water management projects in case to achieve good water quality until 2015 year as specified by Water Framework Directive. |
