One major problem MTA and NY Waterway had to overcome in planning was the ice floes that can sometimes clog the shallows near the riverbanks, particularly on the Newburgh side, in cold weather. This situation is not encountered by its ferries downriver as the salinity of the river below the Hudson Highlands is high enough to prevent ice from forming in all but the coldest temperatures. However, while Newburgh Bay is below the river's salt front, ice from the freshwater sections often accumulates in it.