Crossword clues for Tributary of the Rhine. 4 lettersAnswerClueNAHERhine tributary, crossed by Patton's men March 18, 1945.RUHRRhine tributaryAARERhine tributaryMAINRhine tributary.RUHRRhine tributary in GermanyAARESwiss tributary of Rhine river.RUHRTributary of the Rhine.NAHETributary of the Rhine.MAINTributary of the Rhine.RUHREast-side tributary of the RhineAARETributary of the High RhineAARRhine tributary (Var.)AARRhine tributary in SwitzerlandAARRhine tributary of SwitzerlandAARRhine tributaryAARTributary of Rhine.AARTributary of the Rhine.AARSwiss tributary of the Rhine