Using historic trends in climate and ocean data, the National Oceanic and Atmospheric Administration (NOAA) has projected a two to six foot rise in sea levels by 2100. NOAA has been measuring tides and sea height in St Petersburg since 1947. The sea levels have risen nearly one foot since the station has been monitoring.
The major effects we will see in Oldsmar from sea level rise will be an increase in tidal flooding and a higher water table. Due to the higher seas, the groundwater level will also increase. This means that the ground will not be able to absorb as much stormwater, thus increasing the likelihood of flooding. Additionally, higher seas means that everyday tides will be higher. This makes properties on the water at higher risk for everyday tidal flooding and those close to the bay at a higher risk for king tide flooding.
See the maps below to understand how sea level rise will affect tidal flooding levels over the next 80 years in Oldsmar.
Note: The maps are modelled based on an intermediate level of four feet of sea level rise by 2100.