Here is a view looking eastward towards Hempstead Harbor from the end of Musceta Creek in Glen Cove this week. The creek is brackish water more salt than not but I think the fresh water is due to rain run off more than a spring of some sort. Brewers Yacht Yard is shown towards the south and is a lot more free of ice due to more tidal action, boat traffic even in the winter and ice eater bubblers.
My boat is in the water at Brewers (shrink wrapped and decommisioned) and seems to be doing OK even in this extremely cold winter.