| 11. | Little Conewango Creek flows into Conewango Creek, a tributary of the Allegheny River.
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| 12. | During the Derby, Howard and David Ortiz hit home runs into the Allegheny River.
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| 13. | The Shawnee eventually regained control of the Ohio Country and the lower Allegheny River.
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| 14. | He'll portage to Lake Chautauqua and then the Allegheny River.
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| 15. | Water Street abuts the Allegheny River through most of Manorville.
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| 16. | The Allegheny River borders Penn Hills to the northwest, and across it are Blawnox.
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| 17. | The city is bounded on the north and southwestern corner by the Allegheny River.
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| 18. | Allegany County does not lie along the Allegheny River, as its name would suggest.
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| 19. | The south edge of campus lies on the Allegheny River.
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| 20. | It impounds Mahoning Creek, a tributary of the Allegheny River, primarily for flood control.
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