In hydrologic terms, an estuary is the tidal zone (aestus - a Latin term for tide), along a coastline where freshwater river systems meet and mix with a salty ocean. Examples include bays, river mouths, salt marshes, and lagoons.
In hydrologic terms, an estuary is the tidal zone (aestus - a Latin term for tide), along a coastline where freshwater river systems meet and mix with a salty ocean. Examples include bays, river mouths, salt marshes, and lagoons.