| 21. | But dry conditions may keep river levels below normal for summer.
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| 22. | Grain prices tend to go up when river levels go down.
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| 23. | In the last week, Missouri River levels approximated those of two years ago.
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| 24. | A half lock at the junction protected the canal from high river levels.
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| 25. | "It's bizarre to think that will drastically affect river levels, " he said.
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| 26. | Farther downstream, river levels rose to 24 feet, 4 feet above flood stage.
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| 27. | Behind the barrier, the rooftops of one-story houses are below the river level.
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| 28. | The 15-meter-deep Abri is located 15 meters above river level.
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| 29. | A river level of 1-1.5 metres is an optimum flow.
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| 30. | High river levels can prevent vessels from using this section.
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