Drainage basin recap

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Across
  1. 5. The tidal mouth of a river (7)
  2. 7. Material carried by a river (4)
  3. 9. A landform formed at the river mouth (5)
  4. 11. Erosion caused by friction of rocks and sediment (8)
  5. 14. Sediment carried in the water column (9,4)
  6. 21. Erosion of the riverbank at the base (12)
  7. 22. Speed at which a river flows (8)
  8. 23. Area drained by a river and its tributaries (8,5)
  9. 25. The place where a river meets the sea or lake (5)
  10. 26. The source streams of a river (10)
  11. 29. Volume of water passing a point in a river (9)
  12. 30. Shape of the river from source to mouth (4,7)
  13. 31. Type of rock affecting river processes (7)
  14. 32. Chemical erosion where rock dissolves in water (8)
  15. 34. Dropping of sediment by a river (10)
  16. 35. Flat area beside a river that floods (10)
Down
  1. 1. The beginning of a river (6)
  2. 2. Erosion by the force of water (9,6)
  3. 3. The path through which a river flows (7)
  4. 4. Movement of sediment by a river (14)
  5. 6. Steepness of a river channel (8)
  6. 8. Sediment rolling along the riverbed (7)
  7. 10. A method of river transportation where large stones are rolled along the bed (7)
  8. 12. Fine particles carried within the water (9)
  9. 13. Sediment deposited by a river (8)
  10. 14. The hopping movement of pebbles along the river bed (8)
  11. 15. Erosion where rocks collide and break into smaller pieces (8)
  12. 16. Breakdown of rocks in situ (10)
  13. 17. The point where two rivers meet (10)
  14. 18. A smaller river that joins a larger one (9)
  15. 19. A lake formed from a cut-off meander (5)
  16. 20. A valley with steep sides formed by erosion (1,6)
  17. 24. Boundary separating two drainage basins (9)
  18. 27. Shape of the river channel from bank to bank (5,7)
  19. 28. Wearing away of land by water, ice or wind (7)
  20. 33. A bend in a river (7)