I was actually in the City a few days before I shot these, and there was just NORMALLY colored water, when I shot a whole project at Logan Square which I also had to pass by on the way to, and on the way from.
So, when I researched it online, with varying news article citing different dates, and reasons... According to local Philly news articles, they seem to be reporting it was ALL ABOUT the Philadelphia Eagles... by that I mean the Football team! :)
Now, I shot this on September 12th, and I'd also heard it had something to do with 9/11 (September 11th).
Whatever the actual reason is, I'm unclear... but, HEY, the water is friggin' GREEN!!!!