An estuary is a partially enclosed coastal body of brackish water where freshwater from rivers or streams meets and mixes with saltwater from the open sea. Estuaries form transition zones between rive
Río de la Plata estuary
New York–New Jersey Harbor Estuary
A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant concern in a
Urban flooding in a street in Morpeth, England, 2008
View of flooded New Orleans in the aftermath of Hurricane Katrina
Flooding of a creek due to heavy monsoonal rain and high tide in Darwin, Northern Territory, Australia
Flood in Jeddah, covering the King Abdullah Street in Saudi Arabia