Quite a few years ago we had a simialer situation here in WI and the midwest. What we did because even the water holes and creeks were either dried up or next to it was make our own water holes. In the hill country we found depressions and pulled a tank full of water up to it and emptied the tank into it. Yes it was work and we were fortunate to have the equipment, but I'm telling you we had deer from miles around coming to them. Simply made the best out of a bad situation. Give a try, they don't have to be big either. Good luck