Mandau

{{Short description|River in Germany}}

{{other uses}}

{{Unreferenced|date=June 2020}}

{{Infobox river

| name = Mandau

| image = Mandau (Zittau).jpg

| image_size =

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| image_caption = The Mandau near Zittau

| map =

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| source1_location =

| mouth_location = Lusatian Neisse

| mouth_coordinates = {{coord|50.8902|14.8256|display=inline,title}}

| progression = {{RLusatian Neisse}}

| subdivision_type1 = Countries

| subdivision_name1 = {{hlist|Czech Republic|Germany}}

| location =

| length_km = 40.9

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The Mandau ({{langx|cs|Mandava}}) is a {{convert|40.9|km|mi|abbr=on|adj=mid|-long}} river in Bohemia (Czech Republic) and Saxony (Germany). It is a left tributary of the Lusatian Neisse, which it joins near Zittau.

It originates from multiple springs north of the 580.6m (1902 feet AMSL) Wolf Mountain (Czech: Vlčí hora, German: Wolfsberg) in the Šluknov Hook, which join in Panský (German: Herrnwalde) at 1690 feet above sea level. Coming from Zahrady (German: Gärten) another stream joins in Nové Křečany (Neu Ehrenberg). From there the Mandau flows in a southeasterly direction through Rumburk (Rumburg; Bohemia), Seifhennersdorf (Saxony, Upper Lusatia) and Varnsdorf (Warnsdorf; Bohemia). Afterwards it flows eastwards through another part of Upper Lusatia in which the Lausur joins in Großschönau, from Hainewalde through the {{ill|Roschertal|de}} to Mittelherwigsdorf, where the Landwasser joins, and finally it reaches Zittau where it flows east of the town 228 meters above sea level into the Lusatian Neisse.