Estuary? Marsh? Moor?

The cloudy weather forecast was actually sunny!  This provided opportunity to take a closer look in the area where the creek flows east of the park.  A new problem, of sorts, is that I have no idea what this kind of water/land actually is.  What do you think?  Estuary? Bog? Marsh? Moor? Swamp?  So many terms near one another makes it hard to choose - or at least to choose correctly.

There are areas of open water in some places give access to water plants.  These places are where the ducks frequent.  

This was where I saw the ducks yesterday.

Hope you enjoyed!

~ Robin