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Originally Posted by Griff
Please note the mustard yellow North of Binghamton. Chenango Point in Binghamton is where the Chenango joins the Susquehanna. Parts of Binghamton are low lying and never should have been built on but this storm was not "usual" if you look at the rainfall in the drainage area that is collected and goes through Bing.
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But look at all the other areas that drain through Binghamton that were not yellow. The Johnstown PA (1985?) flood was unique because almost the entire upriver drainage area got 10+ inches of rain within only hours; and all had to drain through Johnstown. Had that been same for Binghamtown, well, then flooding should be expected. This was not a Big One. This on two rivers where most of the drainage area did not suffer 'yellow' rainfall - and still the river basin in Binghamton was too narrow.
To be a significant flood, most of both rivers above Binghamton should have been yellow rainfall. Notice that Wilke Barre and Sunbury both on the same river had less serious (near zero) problems. Wilkes Barre had mostly dark green rainfall upstream AND the flooding from Binghamton. Wilkes Barre took precautions that were mostly unnecessary.
Of course maybe the press suddenly realized after Binghamton that the flooding was really not that serious - was being overhyped. But what we have is a benchmark. Any home flooded by this lesser event should be 'corrected'. That usually means moved. Homes are the one structure that must survive catastrophic events. Businesses, rec fields, parking garages, etc are all sacrificial.
Homes should never be built where flooding will occur. Homes are the one structure we all need intact especially after such events.