| 41. | The confluence is approximately east of the confluence of the Santiam and the Willamette River.
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| 42. | Steam powered vessels did not operate on the Willamette River above Willamette Falls until 1851.
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| 43. | Pisgah rises over 1000 feet from the Willamette River to its summit at 1531 feet.
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| 44. | The party found a large tributary of the Willamette River and named it after Mackenzie.
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| 45. | South of the Willamette River, Charbonneau has a small commercial center with about 10 shops.
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| 46. | A serpentine path wound above the Willamette River.
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| 47. | During the summer he and his followers camped out on Kiger Island in the Willamette River.
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| 48. | Then a yellow cloud is released near the Willamette River, representing a cloud of anthrax spores.
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| 49. | The Willamette River runs through the city, and you can meander with it through Waterfront Park.
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| 50. | A new water treatment plant on the Willamette River opened in 2002 to address this need.
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