Definitely worth a trip to if you love photographing streams & mountains, 30min drive from New Plymouth, the tracks onto the river bed need some clearing & better marking but I have a feeling there's some better tracks further up the road! I was thinking 4 stars because of the track but with a view like that it had to be 5
The Walkway from Old South Rd is open however only as a return walk. It used to be a circuit but the Kaihihi River bridge has been removed. A nice walk through regenerating bush, farm paddocks and residential backyards. It's fairly flat although a little undulating in places. One paddock is muddy after rain, and all paddocks are rocky. A few birds, nice trees, and a couple of views of the river and Mounga.
Might have been nice, but the Bridge enabling the loop walk is gone and the track now seems to have been fenced off by landowners about 10mins in. Don't bother