"We are mourning 60 dead at the moment," Rhineland-Palatinate state premier Malu Dreyer said, up from the previous total of 50 in the state.
Around 1,300 people were missing in the Ahrweiler district south of Cologne, the district government said on Facebook. Mobile phone networks have collapsed in some of the flood-stricken regions, which means that family and friends were unable to track down their loved ones.
Entire communities lay in ruins after swollen rivers swept through towns and villages in the states of North Rhine-Westphalia and Rhineland-Palatinate.
On Friday morning, houses collapsed in Erftstadt near Cologne, and rescue crews were struggling to help residents who had returned to their houses despite the warnings, the Cologne district government said on Facebook.
It said many people were still in the houses and several were missing. A gas leak was further hampering rescue workers as they tried to reach stranded people by boat.