River crossword

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Across
  1. 4. the material carried or moved by the river
  2. 5. the beginning point of the river
  3. 7. – the sides of a river channel
  4. 8. the end of the river where it joins the sea
  5. 11. basin an area of land drained by the river system
Down
  1. 1. sides the slopes on either side of a river
  2. 2. valley the shape of a valley in its upper course
  3. 3. wearing away of the land and removing loose material
  4. 6. a river or stream, which feeds water to the main river
  5. 7. the course of the river
  6. 9. ridges of land around which a river flows
  7. 10. – the bottom of the river channel