Main trench
Hauptgraben is a water body name:
- Buckauer Hauptgraben , on the upper reaches of Kobser Bach , left tributary of the Buckau near Viesen, municipality of Rosenau, district of Potsdam-Mittelmark, Brandenburg
- Hauptgraben (Bie) , right tributary of the Bie in St. Andrä-Wölker , Tulln district, Lower Austria
- Hauptgraben (Erlenbach) , right upper reaches of the Erlenbach to Syburg, Bergen municipality, Weißenburg-Gunzenhausen district, Bavaria
- Hauptgraben , older name of the Eisingerbach , left tributary of the Gennenbach or Gengenbach before Stein , Königsbach-Stein municipality, Enzkreis, Baden-Württemberg
- Knüppelscher Hauptgraben Drainage ditch on Usedom from Kachliner See to Göthensee to Ulrichshorst, municipality of Korswandt, district of Vorpommern-Greifswald, Mecklenburg-Western Pomerania
- Letschiner Hauptgraben , right tributary of the Wriezener Alten Oder near Wriezen , district of Märkisch-Oderland, state of Brandenburg; Drainage ditch in the Oderbruch