March 30-31st we had a horrible rain storm that dropped over 13 inches in 2.5 days.
One week before that one we had one that dropped 6" in 2 days so the ground was saturated when the 2nd storm hit.
Many neighborhoods were declared disaster areas. (especially in a town called Riverhead about 10 miles West)
TODAY they are still pumping out basements because the ground water has risen 5-6' in some places because LI is flat and hardly above sea level.
The bank I use has 4 feet of water in the basement still, using over a dozen sump pumps with 2-3" diameter hoses,
all day, all night, since the end of March.
Problem is, they are just pumping out into the street gutters. Then it just simply drains into the ground water table again.
And today we are getting torrential rains again.
If I could build a house, I would have the entire ground floor water proof like yours is.
My doors would look like wood but they'd be that new synthetic stuff. (Trex?)