The process of sea level rise has caused inundation of basins and river valleys along the coast, forming estuaries.
Fjord occurs along subduction zones.
Raritan Bay are examples Coastal plain salt-marsh estuary from NC to Florida on east coast, few major river estuaries. Negative Estuary evaporation exceeds fresh water input. This system is not used much anymore, because a single estuary could go from 1 to 3 to 2 in a year. They attempt to equilibrate, and this causes moving air and water currents. Wind is moving air, which in turn moves the water.