The Poulanass waterfall is a small but scenic waterfall near Glendalough upper lake (Wicklow county) in the Republic of Ireland.
In Glendalough there is a road heading to the upper lake. There is a big parking up at the lake (gps 53.007246, -6.344835). From here you have to take the Wicklow way trail that starts behind the visitors centre.
After a short walk you will see the Poulanass waterfall cascading down the river Avonmore over 5 meter. Not very tall but the scenery and the views on the lake are gorgeous.