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Chicago Harbor Lock – busiest in nation last year for lockages, vessels > Chicago District > Chicago District News Stories
Chicago Harbor Lock - Wikipedia
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Chicago Harbor Lock - Wikipedia
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Where the Chicago River meets Lake Michigan. Water rushing into the lock. The lock raises and lowers boats so they can pass from one body of water to the other. It's a
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Chicago Harbor Lock - Wikipedia
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Chicago Harbor Lock – busiest in nation last year for lockages, vessels > Chicago District > Chicago District News Stories
