Cadastre of rivers, lakes and ponds of the Republic of Lithuania

The cadastre stores data on rivers at least 3 kilometres long or with a basin area of at least 5 square kilometres; lakes and ponds with a water surface area of at least 0.5 hectares; rivers, lakes, ponds, canals and non-flowing artificial surface water bodies assigned to inland water bodies of national importance or subject to state environmental monitoring; and surface water bodies connecting the previously listed cadastre objects.