| 41. | The abandoned river channel is known as wind gap.
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| 42. | In certain locations there are still knickpoints preserved in these drowned river channels and valleys.
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| 43. | Heightened discharge caused extensive erosion along river channels that removed about of soil and vegetation.
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| 44. | Parallel to the powerhouse, a tailrace tunnel discharges the water to the river channel below.
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| 45. | The aerial bomb was discovered by a dredging machine that was deepening the river channel.
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| 46. | Bed-material exerts a control on river channel morphology.
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| 47. | The corps spends about $ 7 million a year to maintain the river channel for navigation.
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| 48. | It is a little raised above flood level and the highest ground borders the river channels.
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| 49. | Just north of Wabasha, the Mississippi River channel narrows to form the base of Lake Pepin.
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| 50. | Dredges cleared out the river channel downstream.
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