To provide country-level estimates of populations and land areas in river delta- and non-delta contexts for the years 1990, 2000, 2014, and 2015 for 246 statistical areas, focusing on greater-risk zones using the global extent of low elevation zones contiguous to the coast bounded by either 5 meters or 10 meters.

To provide estimates of urban and rural populations and land areas for the years 1990, 2000, 2015 for 234 countries and statistical areas with contiguous coastal elevations of less than or equal to 5m above sea level, 5-10m above sea level, and national totals using multiple updated data sources for comparative analysis.

To provide a preliminary assessment of coastal Ramsar Sites that are at risk to inundation as a consequence of sea level rise.

To provide estimates of urban and rural populations and land areas for the years 1990, 2000, and 2010; and projections to the year 2100 for 202 countries with contiguous coastal elevations in the following categories: less than or equal to 1m, 3m, 5m, 7m, 9m, 10m, 12m, or 20m; as well as national totals.

To provide estimates of urban and rural populations and land areas in the low elevation coastal zone.