Rivers

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Across
  1. 4. agriculture
  2. 6. not allowing water through
  3. 9. making river beds deeper by digging
  4. 10. larger boulders rolling on the bed this way
  5. 11. overflow of water from a river
Down
  1. 1. erosion where air and water forced into cracks
  2. 2. raising the sides of the river bank
  3. 3. factors, natural factors
  4. 5. watering of crops by human design
  5. 7. lighter material in the river is carried by
  6. 8. naturally flooded areas permanently saturated
  7. 12. formed by backward erosion from a waterfall