The Rhine, EMS, Elbe, Yser, Weser, Dee, Tyne, Thames, and Tees are all rivers that flow to the North Sea. The Rhine is a 5 letter river that flows through Germany, Switzerland, and the Netherlands. The EMS is a 3 letter river that flows through Germany and the Netherlands. The Elbe is a 4 letter river that flows through Germany and the Czech Republic. The Yser is a 4 letter river that flows through Belgium and France. The Weser is a 5 letter river that flows through Germany. The Dee is a 3 letter river that flows through Wales and England. The Tyne is a 4 letter river that flows through England. The Thames is a 6 letter river that flows through England. The Tees is a 4 letter river that flows through England.