you just drive up to the "fuchsloch" and then the first one at the right and follow till the and.
youl´ll se a little path goin down to the pegnitz. turn right and you´ll stand in front of the wave.
This spot is funn to go to after work or university. Its really close to the city, at the border.
People of the houses infront of he spot lought with you and like it if there are some guys surfin.
The wave is not much of a wave, its a standing wave in a river and most of the days you have to hold on to a rope so you dont get swept away...
...people´ll think your crazy but its fun anyway
General
if you got beter alternatives you should go there:)