With forecasters saying Lake Ontario and the St. Lawrence River are likely to remain very high for weeks, if not months, waterfront communities are doing their best to prepare for a summer of high water. Attractions, restaurants, and campgrounds are open, but it’s not business as usual. A lot is different on the water, and that presents unique dangers. There's no need to be alarmist here; you can still have lots of fun. But here are five things to watch out for as you’re out on the water during the Memorial Day holiday weekend and into the summer: