Just above Knocksink bridge, there is the remains of an old hydroelectric dam that was apparently used to power Powerscourt House. Some photos are below. The area is accessed by a pathway running along side the Parish House; once over an intimidating gravel bank, you are into a Sylvan scene. Hard to believe more isn’t made of this area.
View of the remains of the dam from upstream: 
Close up of dam wall
River just above dam
Wall built into bank
This is a kind of culvert that runs parallel to dam – an overflow?
Knocksink Bridge from the dam
Úna Wogan sends in this share for the Enniskerry Electrical Supply Co-operative Ltd
I remember the dam when I was child in Enniskerry.
I also remember It being blown up and breached.
Though I cannot remember the exact date. We were all stood on
Knocksink bridge, when it was dynamited. A gentleman named
Keogh did the deed, I cannot remember his christian name but
he was an employee of a local quarry. I was friends with some
of his sons up to the time I left the village for foreign parts.
Happy memories.
Dominic are you anything to Jack? You must have family phoyos to share on the 24th August?
Úna
Yes, I am Jacks younger brother (though not very young any more)
I am going home in a few weeks!!!!