If you thought the floodwaters were receding; think again. The second crest could go even higher this time.

More melting snow and recent heavy rains in the Mississippi River basin in Minnesota and Wisconsin, the Mississippi River at Lock and Dam 15, Rock Island, will start rising again Wednesday after dropping to about 17.9 feet according to a QC Times article.

The National Weather Service reps in Davenport say the range of this second crest is between 19.5 and 21 feet.

The Mississippi River at Rock Island is expected to be at 19.1 feet by Saturday, and should continue to climb from there.

Experts are advising if you have flood protection in place, keep it up.