Hello and welcome!
It looks like you're really close the the transmitters, but still have a major terrain blockage in the way. Take a look at the profile view of KXRM (Fox) for your location (in the graphic, transmitter is on the left, your location is on the right).
http://www.tvfool.com/?option=com_wr...IGITAL%26n%3d7
Your house is pretty deep in the shadows of the little peak between you and the transmitter.
There are only a handful of transmitters that still have enough signal strength to be picked up with a rooftop antenna (roughly channels down to the "red" zone in the list, plus-or-minus a little bit). You'll need a pretty high gain (large) antenna like the Winegard HD7698P or Antennacraft HBU-55 on your roof to go after these stations.
You'll have to decide if there are enough stations within reach to make it worth your while.