You can view some of the most problem areas in Hoboken in this official map http://www.hobokennj.org/departments/environmental-services/storm-flood-zones/
However, the new flood pumps and the cleaning/updating of the sewerage pipes by the local utility has improved flooding in the region.
New flood insurance laws do require a flood elevation certificate, and you can get that information from your condo association. Typically, insurance will not cover anything that can be considered the lowest level/basement so do speak with a flood insurance agent before investing in useless individual flood insurance.
Whether your building has french drains, sump pumps etc will also determine how immune your unit will be. Your backyard will also help with drainage, and help protect your unit.
Finally, follow your nose, if it smells musty, it probably floods.