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Iowa River

River in Pine Lake State Park, Sac and Fox/Meskwaki Settlement, Port Louisa National Wildlife Refuge in Steamboat Rock in IA, IL
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Length
324mi

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On Wikipedia
The Iowa River is a tributary of the Mississippi River in the state of Iowa in the United States. It is about 323 miles (520 km) long and is open to small river craft to Iowa City, about 65 miles (105 km) from its mouth. Its major tributary is the Cedar River.
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