New Zealand Map Series 1:
S12 55- 37- (WGS84 -41.21861 172.105335)
New Zealand Map Series 260:
L27 35- 98- (WGS84 -41.216733 172.111787)
Latitude and Longitude (WGS84):
41°13´ S 172°6.3´ E (WGS84 -41.216667 172.105)
Notes:
The correct spelling of location is Oparara River.