| Rank | River | Length | Estuary | % Correct |
|---|---|---|---|---|
| 1 | Danube | 2.857 km | Black Sea | 98%
|
| 3 | Elbe | 1.091 km | North Sea | 96%
|
| 7 | Main | 524 km | Rhine | 93%
|
| 168 | Red Main | 62 km | Main | 93%
|
| 2 | Rhine | 1.236 km | North Sea | 93%
|
| 4 | Oder | 866 km | Baltic Sea | 92%
|
| 5 | Weser | 744 km | North Sea | 92%
|
| 171 | Weser | 62 km | Ourthe | 92%
|
| 12 | Neckar | 367 km | Rhine | 90%
|
| 10 | Spree | 400 km | Havel | 90%
|
| 8 | Inn | 517 km | Danube | 89%
|
| 6 | Mosel / Moselle | 544 km | Rhine | 89%
|
| 16 | Isar | 295 km | Danube | 88%
|
| 13 | Havel | 325 km | Elbe | 86%
|
| 53 | Franconian Saale | 142 km | Main | 85%
|
| 9 | Saale | 413 km | Elbe | 85%
|
| 11 | Ems | 371 km | North Sea | 84%
|
| 29 | Ruhr | 219 km | Rhine | 82%
|
| 20 | Aller | 260 km | Weser | 81%
|
| 28 | Fulda | 220 km | Weser | 81%
|
| 19 | Lech | 264 km | Danube | 78%
|
| 23 | Lahn | 245 km | Rhine | 75%
|
| 18 | Leine | 281 km | Aller | 74%
|
| 64 | Rhin | 125 km | Havel | 72%
|
| 24 | Saar | 235 km | Mosel / Moselle | 72%
|
| 21 | White Elster | 257 km | Saale | 72%
|
| 26 | Lippe | 222 km | Rhine | 71%
|
| 65 | Freiberger Mulde | 124 km | Mulde | 70%
|
| 17 | Mulde | 290 km | Elbe | 70%
|
| 45 | Zwickauer Mulde | 166 km | Mulde | 70%
|
| 35 | Black Elster | 188 km | Elbe | 69%
|
| 46 | Naab | 165 km | Danube | 68%
|
| 47 | Sieg | 155 km | Rhine | 68%
|
| 60 | Ilm | 129 km | Saale | 66%
|
| 116 | Ilm | 82 km | Abens | 66%
|
| 80 | Oker | 105 km | Aller | 65%
|
| 196 | Regnitz | 58 km | Main | 65%
|
| 31 | Unstrut | 192 km | Saale | 65%
|
| 55 | Peene | 142 km | Baltic Sea | 64%
|
| 15 | Werra | 300 km | Weser | 62%
|
| 78 | Enz | 105 km | Neckar | 60%
|
| 101 | Nidda | 90 km | Main | 60%
|
| 25 | Salzach | 225 km | Inn | 59%
|
| 63 | Nahe | 125 km | Rhine | 58%
|
| 38 | Regen | 177 km | Danube | 58%
|
| 40 | Sauer | 173 km | Mosel | 58%
|
| 111 | Sauer | 85 km | Rhine | 58%
|
| 52 | Warnow | 143 km | Baltic Sea | 58%
|
| 42 | Bode | 169 km | Saale | 57%
|
| 14 | Eger | 316 km | Elbe | 57%
|
| 22 | Lausitzer Neiße | 256 km | Oder | 56%
|
| 85 | Uecker / Ucker | 103 km | Baltic Sea | 56%
|
| 34 | Eider | 188 km | North Sea | 55%
|
| 77 | Ilmenau | 107 km | Elbe | 55%
|
| 134 | Mindel | 75 km | Danube | 55%
|
| 110 | Prüm | 85 km | Sauer | 54%
|
| 37 | Vechte | 182 km | Zwarte Water | 54%
|
| 129 | Abens | 76 km | Danube | 53%
|
| 49 | Wertach | 151 km | Lech | 53%
|
| 39 | Eder | 176 km | Fulda | 52%
|
| 62 | Zschopau | 128 km | Freiberger Mulde | 52%
|
| 58 | Lesum | 131 km | Weser | 50%
|
| 145 | Issel / Oude Ijssel | 70 km | IJssel | 45%
|
| 70 | Wupper | 117 km | Rhine | 45%
|
| 107 | Ahr | 85 km | Rhine | 44%
|
| 126 | Our | 78 km | Sauer | 44%
|
| 87 | Pegnitz | 101 km | Regnitz | 44%
|
| 51 | Iller | 147 km | Danube | 43%
|
| 66 | Trave | 124 km | Baltic Sea | 43%
|
| 27 | Altmühl | 220 km | Danube | 38%
|
| 59 | Tauber | 130 km | Main | 35%
|
| 41 | Rur | 170 km | Maas | 34%
|
| 95 | Kinzig | 93 km | Rhine | 30%
|
| 117 | Kinzig | 82 km | Main | 30%
|
| 44 | Kocher | 168 km | Neckar | 30%
|
| 113 | Emscher | 84 km | Rhein | 29%
|
| 33 | Jagst | 189 km | Neckar | 29%
|
| 81 | Erft | 103 km | Rhine | 28%
|
| 108 | Gera | 85 km | Unstrut | 28%
|
| 32 | Hunte | 189 km | Weser | 27%
|
| 159 | Ilz | 65 km | Danube | 26%
|
| 30 | Elde | 208 km | Elbe | 24%
|
| 96 | Friedberger Ach | 92 km | Danube | 24%
|
| 133 | Aisch | 75 km | Regnitz | 23%
|
| 67 | Elz | 121 km | Rhine | 23%
|
| 36 | Amper | 185 km | Isar | 22%
|
| 93 | Dahme | 95 km | Spree | 22%
|
| 135 | Lauter | 74 km | Rhine | 22%
|
| 122 | Waldnaab | 80 km | Naab | 22%
|
| 61 | Lenne | 129 km | Ruhr | 21%
|
| 72 | Loisach | 114 km | Isar | 21%
|
| 121 | Rems | 80 km | Neckar | 21%
|
| 92 | Schwalm | 97 km | Eder | 21%
|
| 75 | Vils | 110 km | Danube | 21%
|
| 106 | Vils | 87 km | Naab | 21%
|
| 127 | Vils | 78 km | Naab | 21%
|
| 68 | Wümme | 118 km | Lesum | 21%
|
| 50 | Alz | 150 km | Inn | 20%
|
| 151 | Chemnitz | 67 km | Zwickauer Mulde | 20%
|
| 43 | Hase | 169 km | Else / Ems | 20%
|
| 54 | Kyll | 142 km | Mosel / Moselle | 20%
|
| 48 | Oste | 153 km | North Sea | 20%
|
| 84 | Saalach | 103 km | Salzach | 20%
|
| 150 | Wetter | 68 km | Nidda | 20%
|
| 199 | Burgdorfer Aue | 57 km | Aller | 19%
|
| 94 | Dosse | 94 km | Havel | 19%
|
| 104 | Great Aue | 88 km | Weser | 19%
|
| 76 | Rott | 109 km | Inn | 19%
|
| 86 | Wied | 102 km | Rhine | 19%
|
| 74 | Diemel | 110 km | Weser | 18%
|
| 162 | Fils | 63 km | Neckar | 18%
|
| 100 | Glan | 90 km | Nahe | 18%
|
| 123 | Murg | 79 km | Rhine | 18%
|
| 98 | Nagold | 91 km | Enz | 18%
|
| 73 | Nied | 114 km | Saar | 18%
|
| 177 | Ohm | 60 km | Lahn | 18%
|
| 142 | Recknitz | 72 km | Saaler Bodden / Baltic Sea | 18%
|
| 97 | Wipper | 92 km | Unstrut | 18%
|
| 112 | Wipper | 85 km | Saale | 18%
|
| 99 | Wutach | 91 km | Rhine | 18%
|
| 88 | Innerste | 100 km | Leine | 17%
|
| 91 | Milde-Biese-Aland | 97 km | Elbe | 17%
|
| 69 | Niers | 117 km | Maas | 17%
|
| 56 | Paar | 134 km | Danube | 17%
|
| 102 | Pleiße | 90 km | White Elster | 17%
|
| 105 | Stör | 87 km | Elbe | 17%
|
| 57 | Wörnitz | 132 km | Danube | 17%
|
| 71 | Berkel | 114 km | IJssel | 16%
|
| 118 | Helme | 81 km | Unstrut | 16%
|
| 120 | Itz | 80 km | Main | 16%
|
| 160 | Nuthe | 65 km | Havel | 16%
|
| 83 | Ohre | 103 km | Elbe | 16%
|
| 139 | Treene | 73 km | Eider | 16%
|
| 132 | Black Laber | 76 km | Danube | 15%
|
| 90 | Fuhse | 98 km | Aller | 15%
|
| 109 | Great Laber | 85 km | Danube | 15%
|
| 79 | Great Röder | 105 km | Black Elster | 15%
|
| 82 | Mies | 103 km | Berounka | 15%
|
| 190 | Nette | 59 km | Rhine | 15%
|
| 163 | Nidder | 63 km | Nidda | 15%
|
| 169 | Schussen | 62 km | Rhine | 15%
|
| 181 | Schwarzach | 60 km | Naab | 15%
|
| 182 | Schwarzach | 60 km | Rednitz | 15%
|
| 114 | Stepenitz | 84 km | Elbe | 15%
|
| 166 | Wern | 63 km | Main | 15%
|
| 144 | Werre | 72 km | Weser | 15%
|
| 115 | Wesenitz | 83 km | Elbe | 15%
|
| 128 | Wiesent | 78 km | Regnitz | 15%
|
| 146 | Agger | 68 km | Sieg | 14%
|
| 186 | Alme | 59 km | Lippe | 14%
|
| 89 | Blies | 99 km | Saar | 14%
|
| 103 | Dinkel | 89 km | Vechte | 14%
|
| 119 | Helbe | 80 km | Unstrut | 14%
|
| 193 | Löbauer Wasser | 58 km | Spree | 14%
|
| 195 | Mangfall | 58 km | Ilm | 14%
|
| 164 | Salm | 63 km | Mosel | 14%
|
| 131 | Schmutter | 76 km | Danube | 14%
|
| 170 | Schwentine | 62 km | Kieler Förde / Baltic Sea | 14%
|
| 124 | Tiroler Achen | 79 km | Chiemsee / Bavarian Sea | 14%
|
| 185 | Zusam | 60 km | Danube | 14%
|
| 156 | Bille | 65 km | Elbe | 13%
|
| 167 | Emmer | 62 km | Weser | 13%
|
| 125 | Flöha | 78 km | Zschopau | 13%
|
| 130 | Isen | 76 km | Inn | 13%
|
| 136 | Lieser | 74 km | Mosel | 13%
|
| 161 | Nister | 64 km | Sieg | 13%
|
| 143 | Sude | 72 km | Elbe | 13%
|
| 137 | Trebel | 74 km | Peene | 13%
|
| 165 | Weida | 63 km | White Elster | 13%
|
| 140 | Argen / Upper Argen | 72 km | Rhine | 12%
|
| 147 | Böhme | 68 km | Aller | 12%
|
| 176 | Nebel | 60 km | Warnow | 12%
|
| 152 | Selke | 67 km | Bode | 12%
|
| 187 | Elzbach | 59 km | Mosel / Moselle | 11%
|
| 153 | Werse | 67 km | Ems | 11%
|
| 141 | Leda | 72 km | Ems | 10%
|
| 148 | Randow | 68 km | Uecker | 10%
|
| 173 | Selz | 61 km | Rhine | 10%
|
| 184 | Speyerbach | 60 km | Rhine | 10%
|
| 175 | Haidenaab | 60 km | Naab | 9%
|
| 154 | Haune | 67 km | Fulda | 9%
|
| 138 | Jeetze / Jeetzel | 73 km | Elbe | 9%
|
| 178 | Parthe | 60 km | White Elster | 9%
|
| 179 | Pfinz | 60 km | Rhine | 9%
|
| 194 | Luhe | 58 km | Ilmenau | 8%
|
| 149 | Tollense | 68 km | Peene | 8%
|
| 158 | Gennach | 65 km | Wertach | 7%
|
| 197 | Schunter | 58 km | Oker | 7%
|
| 183 | Sempt | 60 km | Isar | 7%
|
| 188 | Fuhne | 59 km | Mulde / Saale | 6%
|
| 155 | Löcknitz | 66 km | Elbe | 6%
|
| 157 | Franconian Rezat | 65 km | Rednitz | 5%
|
| 172 | Nims | 61 km | Prüm | 5%
|
| 200 | Kammel | 57 km | Mindel | 4%
|
| 180 | Pulsnitz | 60 km | Black Elster | 4%
|
| 191 | Rench | 59 km | Rhine | 4%
|
| 174 | Weißeritz / Wilde Weißeritz | 61 km | Elbe | 4%
|
| 192 | Weschnitz | 59 km | Rhine | 4%
|
| 189 | Mildenitz | 59 km | Warnow | 3%
|
| 198 | Wondreb | 58 km | Eger | 3%
|