Flow is well within penstock capacity, thus reach is undoubtedly barely a trickle of water.
The river swings to the left and passes under the penstock (pipe) for the second time (it first passes under it immediately after the dam). Immediately downstream of this second crossing, it drops down a steep sliding falls. The bedrock starts sloping a ways upstream, so get out to scout well before the penstock (if you have not throroughly scouted before you put on).