Predators know where to look for ducks, and mother ducks very often put their nests far away from it.  Ducks don't need water, just water for drinking.  We ended up with a wild duckling on our property 1/4 of a mile from the lake.  Eventually the moms will lead them back to the water.  I wonder if the mom is still around.  She may be shy and is hiding.  We did put the baby we have found into a cat crate onto our parking lot, where we let it cry for hours.  Mom never showed, and we later found her and another duckling dead on the road.  We did raise the wild duck and she eventually flew back into the wild.  Was a wonderful experience.  Had a wild duck fly into the duck yard a couple of days ago.  We think it may be the wild duckling, now full grown.