sisävesialueet
Sisävesialueet are Finland’s inland water bodies, referring to lakes, rivers and other freshwater areas situated within the country’s land boundaries and not part of the Baltic Sea or coastal marine areas. The term is used in legal, ecological and administrative contexts to distinguish freshwater systems from marine waters. Inland waters can include natural lakes, reservoirs and certain man-made channels that belong to the national waterway network.
Inland waters are typically freshwater systems characterized by seasonal variation and, in winter, ice cover. They
Management and protection of sisävesialueet fall under national water legislation and environmental protection rules. Monitoring and
Challenges facing inland waters include eutrophication from nutrient runoff, sedimentation and habitat alteration, invasive species, and