Access from the Wairau-Hanmer Springs Hydro Road (Rainbow Road) between St Arnaud and Hanmer Springs. This is a gravel road with stream fords, accessible by high-clearance 4WD vehicles only.
NZTM2000 coordinates: E1593706, N5343329
Latitude: -42.06192817, Longitude: 172.92224786
Note: Coldwater Campsite is a different location to Coldwater Hut.