Rohrdorf was first mentioned in 788 in the so called notitia arnonis.
Settlements have been proofed also in prehistoric time.
See also:
http://www.rohrdorf.de
... it is water. The total area is 5.83% water. Demographics As of the census of 2000, there are 756 people, 329 households, and 222 families residing in the town. The ...