HT plain wire isn't the best for holding stock without electricity.(Or with electricity, IMHO) It can be done with 8-10 strands and close post spacing, but a couple of wires strung tree to tree 20' apart with no juice won't hold much. HT fence wire originated in New Zealand in the 70's, but is now available world wide. It's certainly going to be just about the easiest fence to patch back together after a flood, especially if you put a planned failure in the middle. Something like a Gripple, a loose crimp, or a kinked knot..... It won't work in every situation, but sometimes finding two ends to splice back together is easier than rebuilding the whole stretch.