Rivers

• A river is fresh water flowing across the land
• The source is where the river begins
• The mouth of a river
• The course of a river
• Mouth

  The final section of a river where it meets the larger body of water.
• Estuary

  A specific type of mouth that occurs when a river meets the sea and freshwater mixes with saltwater.
• Delta


  A landform created by the deposition of sediment at the mouth of a river, typically triangular in shape and formed over time as sediment accumulates and builds up.