http://wiki.project1999.com/Per-Level_Hunting_Guide has lots of spots for Shaman (and other classes) at level 45 (or at other levels).
Currently when I plug in "Shaman" and "45", I see five spots: Outside Karnor's in DL, Kedge entrance, Yeti caves in DL (this is a great one for you right now, but it will green out in a couple levels), Grobb (if you're a Barbarian or Iksar this camp has good loot), and WL geonids (also pretty good loot, but you will be on the low-end level-wise for this camp ... you might want to try the nearby tar goos also).