The Tewheniwheni Stream feeds into the Mangaehu Stream east of the Tututawa trig, while the Pipi Stream runs northwards to the Mangaehu from the Waitiri trig.
The Tewheniwheni Stream flows into the Mangaehu Stream east of the Tututawa trig, whereas the Pipi Stream runs northwards to the Mangaehu from the Waitiri trig.