The Schreyenbachfall used to be a famous waterfall in the region of Linthal, but since 1964 there is a power plant which reduces the flow to zero. But! since a few years the waterfall flows 22 days in summertime. From 2015 the water falls 45 days a year: There is hope.
The Schreyenbachfall is located near Kraftwerke Linth-Limmern. From Linthal drive to Tierfehd and park the car at the power plant and Luftseilbahn (gps 46.879138, 8.980314). From here walk a little back the road where you can see the waterfall (at least a few times a year) at the left side of the road.
There are more waterfall in direct proximity. Near the parking, there is also a very tall waterfall in the river Wildwüeschtibach. I am not sure if this waterfall is flowing all year around.
A little further you can make a walk at the Linthalschlucht with several nice waterfalls, a must to see!