GeoTide also calculates Tidal Levels, MSL, LAT, HAT, MLW etc. These contours are essential for safe Navigation, and as legal boundaries for access/fishing rights, ownership and fishery protection e.g. Marine Protected Areas (MPAs). Using statistical analysis, GeoTide now calculates flood probability, its variation with height and its dependence upon rising sea level - for climate change, flood mitigation and flood-risk studied