I live near this beautiful stream, but remember it is a stream and the flow of water in it can change rapidly dependent on the weather up the mountain, which you cannot see or know what is happening.
It should be noted that Nanue Bridge is the highest bridge in the State of Hawaii.. also Please Please Please take care when visiting Hawaii our beautiful islands and the wonders we have to share.. Do your homework before trekking out to secluded spots..
If you get into a situation it could take hours/days etc. before help could arrive, if you can get a message out…
FYI, I can hear the stream when it’s raging and also the surf crashing against the shoreline that’s how close I am to this location.