Disturbance at Umbrafen Lake

We came to Outland expecting to find small pockets of life. What we discovered in Zangarmarsh was a lush environment with a thriving ecosystem.$B$BOur initial assessment of the area was deceiving, however. The water levels at the lakes and marshes have consistently been going down since we started taking measurements.$B$BThe impact this could have on the local animal and plant life is disastrous. Go to Umbrafen Lake, southwest of here, and look for clues related to this water depletion.