| 11. | Both were located at the head of navigation of the tidal geological fall line.
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| 12. | The city of Franklin lies on its west bank at the river's head of navigation.
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| 13. | River boats could not travel any farther inland, making the location the head of navigation.
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| 14. | From Teddington Lock to the head of navigation, the navigation authority is the Environment Agency.
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| 15. | The head of navigation on the Mississippi is the Coon Rapids Dam in Coon Rapids, Minnesota.
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| 16. | It was regarded as the head of navigation on the river before the decline in river traffic.
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| 17. | The location was about above the head of navigation on the James River at what became Richmond.
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| 18. | For many years, Yarm was at the tidal limit and head of navigation on the River Tees.
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| 19. | From the head of navigation, the miners went overland on the Jackass Trail to the gold fields.
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| 20. | The river discharges into the bay at a point between Lower Onslow, the historic head of navigation.
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