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Across 2. The material carried by a river. 5. A horseshoe-shaped lake formed in the old age stage of a river. 6. The longest river in Ireland. 7. Soil laid down by a river. 10. When a river breaks down rocks by chemical means. 12. A famous waterfall in Ireland. 13. A form of renewable energy produced by a river. 15. The force of running water is known as __________ action. 16. Erosion of the banks of a river. 20. A feature of erosion found in the upper course of a river. 22. The place where a river rises. 23. The type of spurs found in the upper course of a river. 24. A method by which heavy particles are moved along the bed of a river. 25. The high ground separating one river basin from another.

Down 1. The area drained by a river and its tributaries. 3. Another name for the upper course of a river. 4. Where one river joins another river. 8. A smaller river that joins a bigger river. 9. The channels into which a river breaks up when going through a delta. 11. The type of erosion that deepens the bed of a river. 14. A winding loop or bend in a rivers channel. 17. When a river uses its load to erode. 18. The name given to the pool at the foot of a waterfall. 19. Where a river enters the sea. 21. Deposits of alluvium at the mouth of some rivers.