These are projections for future sea level rise, based on mapping data used for a 2012 study of the Santa Barbara coastline. Blue portions represent 17 inches of sea level rise by 2050, plus three feet
of flooding. Red portions represent 55 inches by 2100, plus three feet of flooding. Maps like this use the “bathtub approach” — assuming that everything below a specific elevation will be inundated — and do not factor in natural or man-made barriers.