And then there were four. A tipster just sent us this shot of Danish-Icelandic artist Olafur Eliasson's Brooklyn Bridge waterfall, being tested this afternoon. This completes the teaser set for all the NYC Waterfall aficionados out there. Also seen below are the Governors Island test, the Pier 35 test in Manhattan, and the other Brooklyn waterfall between Piers 4 and 5.

The NYC Waterfalls – which are not being paid for with city money, but are being produced by The Public Art Fund – will all be raging simultaneously starting Thursday morning and continuing through October. More coverage here.