River Words

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Across
  1. 1. Material carried by a river
  2. 4. Rocks wearing away the bed of a river
  3. 6. Process of wearing away and removal of material
  4. 8. Rocks eroding each other into smaller sands and gravels
  5. 11. Dividing line between two drainage basins
  6. 13. Bottom of a river
Down
  1. 2. Area drained by a river
  2. 3. Chemical action eroding river channel
  3. 5. Smaller river that joins a larger one
  4. 7. Where a tributary joins a larger river
  5. 9. End of a river
  6. 10. Water wearing away a channel through friction
  7. 12. Start of a river
  8. 13. Sides of a river