Thanks always for your local insight...in regard to the ponds, is there any current? I would think minus a current pulling him deeper / further away from land, he would be along / near the shore. Are there any submerged trees, brush, etc. that you are aware...just trying to think if he could have become "trapped" and that's adding to the search difficulty if indeed he's in the water. My only other thought is if he tried to seek shelter, warmth and came across a shed, garage, etc. and unfortunately still succumb to the elements.