Miami-Dade County, Florida (2045)
The consequences of sea level rise
Miami-Dade County faces a number of sea level rise risks, including increased urban flooding, increased saltwater intrusion and contamination of drinking water supplies, and flooding of power plant substations and ensuing power outages.
By 2045, sea level in Miami-Dade County is expected to rise about 15 inches above current levels, according to a projection by the US Army Corps of Engineers.
With this increase, in just 30 years’ time, flood-prone locations in Miami-Dade County’s coastal communities would face roughly 380 high-tide flood events per year, and the extent of tidal floods would expand to affect new low-lying locations, including many low-income communities with limited resources for preparedness measures.
The flood events that today snarl daily life in parts of the county only periodically would become widespread and, on average, a daily occurrence.
As sea levels rise, higher water levels can also increase the extent and impact of storm surge and can permanently inundate some locations. About one-fifth of urban Miami-Dade County (namely, the area outside of the Everglades) lies at elevations that are within one foot of sea level at high tide; a one-foot increase in sea level is estimated to threaten up to $6.4 billion in taxable real estate in the county overall.
10 Page Fact Sheet on Miami-Dade: http://www.ucsusa.org/sites/default/files/attach/2016/04/miami-dade-sea-level-rise-tidal-flooding-fact-sheet.pdf