Flood map displays all areas below chosen elevation from sea level. App ignores current or historic flood levels. Elevation map insufficient alone for flood risk analysis. Surface runoff affects flood coverage beyond elevation. Flow diversion influences actual flood areas. Land type determines flood spread irrespective of height. Elevation zero at sea level. Negative elevation indicates depth below sea. Data sourced from Mazpzen, TNM, SRTM, GMTED, ETOPO1. App may contain bugs or inaccuracies. Select country to access specific flood map.