Classic Era
Gadgetzan Water Survey
Level 46
Requires Level 38
Both
Tanaris
You will also receive:
3,050 experience
35s
+75 reputation with Gadgetzan
Forever
Gadgetzan Water Survey
Level 46
Requires Level 38
Both
Tanaris
You will also receive:
3,050 experience
35s
+75 reputation with Gadgetzan
No item rewards. In quest chains the rewards usually sit on the final quest — check the chain on Wowhead.