Annual precipitation 8 to 20 inches above normal in several parts of the Missouri Basin
For Yankton and Sioux Falls, South Dakota, 2018 is the wettest year on record. The Big Sioux, Elkhorn, Floyd, James, and Niobrara rivers and the Missouri River downstream from Gavins Point Dam -- where flows are unregulated by dams -- saw annual precipitation 8 to 20 inches above normal. Image Courtesy National Weather Service

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