Areas of Seattle projected by Seattle Public Utilities to be below sea level during high tide
(Mean Higher High Water) and therefore at risk of flooding or inundation are shaded in blue under three levels of sea level
rise,6ed217d6-4e42-49bd-ba0a-80e8df462b45 assuming no adaptation. (High [50 inches] and
medium [13 inches] levels are within the range projected for the Northwest by 2100; the highest level [88 inches] includes the
compounding effect of storm surge, derived from the highest observed historical tide in
Seattlefd73d381-d3df-4079-b48d-20027a7ba63b). Unconnected inland areas shown to be below
sea level may not be inundated, but could experience problems due to areas of standing water caused by a rise in the water
table and drainage pipes backed up with seawater. (Figure source: Seattle Public
Utilities7fdde2b7-0a3a-4f98-8434-c4040a41f3ac).