Havaitut tulva-alueet / Historic Flood Maps
Observed Flood Areas / Historic Flood Maps
Havaittu tulva-alue on jonkun tietyn toteutuneen tulvan veden peittämä alue, joka on rajattu maastohavaintojen (tulva-alueen reunan merkitseminen tai kuvaaminen) tai kaukokartoitusaineiston (ilmakuvaus (stillkuvat/videointi) tai satelliittikuvat) perusteella. Tulkitulta tulvarajalta voidaan käydä...
This dataset defines an observed flood area as the extent of land covered by water during a specific, actual flood event. The boundary is delineated using field observations, such as marking or photographing the edge of the flooded area, or through remote sensing data, including aerial photography (still images or video) or satellite imagery. The interpreted flood boundary can be used to assess the extent and impact of past flooding. The dataset is maintained as part of Finland's national open data offering and supports flood risk mapping and historical flood analysis.