In the maps below, I show some flooding scenarios based on New York City RIM files. These maps are produced on a "what if" basis if the polar ice caps should melt at a steady pace going to the year 2080. These flood maps seem to be based on elevation. In the recent local news, in the real estate sections are reporting increased building activity in the Greenpoint and Long Island City areas of Queens. Many of these zones of increased building activity are taking place a few hundred feet or less near the waterfront. I am sure that the developers of these projects are taking into effect future water levels. I would like to tell my readers that they should not make any decisions based on these maps. I cannot tell if these maps are accurate or if the water level will rise due to melting ice caps. I thought that the readers should be aware of this, if they are not so already. Last weekend, the "G" train that was closed down for underwater tube reconstruction reopened. It goes through the target area. These Greenpoint tubes suffered much water damage due to superstorm Sandy. I also wanted to show mapping techniques as well. It is possible to get a typographic map of New York City from the Rutgers' University Map Lab and bring it into a ARCGIS map. What is nice is that this file does not need to be geo referenced.
In the above map, I bring in the street pattern for Greenpoint Brooklyn and Long Island City Queens. The black thick lines are the subway routes in the area. You will see three flood scenarios for the area for years 2020, 2050 and 2080. The location of the "G" line is indicated. The "G" train crosses the Newtown Canal as indicated by the arrow.
I am not an expert in reading this but it seems that surface waterflow is not an issue for the area. Notice the big waterflow vector for the Lower East Side of Manhattan to the left of the map.
Please ignore the legend.