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Department of Transportation
Dataset Description
Mississippi River Lock 27 (located in Granite City, Illinois, just north of St. Louis) is the final lock on the Upper Mississippi. It serves as the definitive gateway for grain produced in the Midwest heading downbound to the Gulf of Mexico for international export.
Between 2021 and 2023, grain tonnage at Lock 27 was heavily influenced by historic low water levels and drought conditions, which forced barge operators to reduce "drafts" (how deep a barge sits in the water) and tow sizes.
Organization: Department of Transportation
Organization URL: https://catalog.data.gov/organization/dot
Last updated: 2026-06-10
Tags: agricultural products, ports, supply chain, supply-chain, trade, waterways
Related Datasets
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Lock
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Link Tonnages (historic)
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