The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

Bloated by melting snow and rain across the Upper Midwest, the Mississippi River rose out of its banks and strained against dikes. Hundreds of people had left their homes in low-lying riverside areas of Wisconsin and Iowa. A 403-mile stretch of the Mississippi from Muscatine, lowa, to Minneapolis was closed to boat and barge traffic.
Mississippi river （） in Upper Midwest.