The Mokoroa Stream runs through Goldie Bush in Auckland - a lovely place for a walk.
Look out for big, old eels in the stream, also some crayfish, though they are much smaller.
At the upper end of Goldie Bush are the Mokoroa Falls - great place for a picnic:
The stream-side track is really rough: slippery when wet and with several river crossings that would be dangerous when the river is in spate. Fortunately, you can also admire the river and access the falls from the Goldie Bush Walkway which is a much safer and easier path.