COASTAL FLOODED FORESTS

Sea level rise is the primary driver of increased coastal flooding. As global temperatures rise, two main mechanisms raise ocean levels: thermal expansion (water molecules expand as oceans warm) and melting of land-based ice sheets in Greenland and Antarctica, which adds new water to the seas. Since the late 1800s, global sea levels have already risen about 8-9 inches, and this rate is accelerating. Even without any additional storms or extreme weather, this gradual rise means that normal high tides and routine rainfall events now regularly flood coastal cities, roads, and infrastructure that never flooded before. Communities experience "sunny day flooding" or "nuisance flooding" where streets, subway systems, and neighborhoods become temporarily submerged during high tides, saltwater infiltrates freshwater aquifers, and corrosive salt damages buildings and roads.

Storm surge and intense precipitation amplify coastal flooding dramatically. As ocean waters warm, hurricanes and typhoons intensify with stronger winds and heavier rainfall, pushing even higher walls of water onto shore during storms. The combination of already-elevated sea levels plus storm surge creates a compounding effect—a hurricane that once would have caused moderate flooding now causes catastrophic inundation. Additionally, climate change is shifting rainfall patterns and intensifying precipitation events, causing heavy rains to overwhelm drainage systems in coastal areas. Rivers and stormwater systems that drain into the ocean experience backflow and reduced drainage capacity because the ocean level is higher, trapping floodwaters on land for longer periods. Low-lying coastal cities like Miami, Venice, Jakarta, and New Orleans face an accelerating crisis where chronic flooding becomes the baseline condition, occasionally punctuated by devastating storms that cause massive damage and displacement.