Breiter Graben
{{Expand section|date=November 2011}}
{{Infobox river
| name =Breiter Graben
| name_other = Flutgraben
| image = File:Mulkwitz struga e0145487.jpg
| image_size = 300
| image_alt =
| image_caption = Breiter Graben (top left) joining Struga near Mulkwitz
| map =
| map_size =
| map_alt =
| map_caption =
| source1_location = Nochtener Weg, Mühlrose
| source1_coordinates= {{coord|51|29|04|N|14|31|38|E}}
| source1_elevation =
| mouth_location = east of bridge of state road 130, Mulkwitz
| mouth_coordinates = {{coord|51|30|34|N|14|29|30|E|display=inline,title}}
| mouth_elevation =
| progression = Struga – Spree – Havel – Elbe – North Sea
| subdivision_type1 = Country
| subdivision_name1 = Germany
| length_km = 4.4
| discharge1_avg =
| basin_size =
| river_system =
| tributaries_left =
| tributaries_right =
}}
Breiter Graben ({{langx|hsb|Šěroka hrjebja}}) is a canal in Landkreis Görlitz, Saxony, Germany. It is also known as Flutgraben (Přiliwowa hrjebja) and runs between the north-western edge of the lignite open-cast mine Nochten and the village of Mulkwitz where it joins the river Struga, a tributary of the river Spree. On its course, it passes north of the village Mühlrose. Its acidic, iron-rich water, originating from an open-cast mine, heavily pollutes Struga river.{{cite book | author = L. Küchler, S. Harnapp | title = Gewässergütebericht 2003 - Biologische Befunde der Gewässergüte sächsischer Fließgewässer mit Gewässergütekarte | series = Materialien zur Wasserwirtschaft | publisher = Sächsisches Landesamt für Umwelt und Geologie (LfUG), Dresden | year = 2004 | page = 48 | url = http://www.umwelt.sachsen.de/umwelt/wasser/download/Guetebericht_2003_neu.pdf}}