Evan probably reached the Community Centre around late morning or early afternoon and lurked a bit, then perhaps helped with a move or two of the injured/sick. He's an excellent swimmer.
After that, and probably a failed attempt at seeing where Moody lived (ulterior motives!), he headed to assist with a few more crossings, then disappeared to the merchant district, where he could fight something (monsters) with less people around to irritate him, as well as take some supplies.