Thank you
@Bossroo for that suggestion. I have built such watergaps. Our previous property had a dry wash that captured run off water from a large watershed area and could go from a dry wash to a raging river in a matter of hours. I battled the water gap constantly. Our road also went under water, cutting us off from the feed shed and causing general misery. We finally put in a 7'x21' steel tank with the ends cut out for a culvert, ending the water over our road. But the fence was constantly knocked down, horses got out, it was a PITA. The dry wash was a pain where it entered and left the property. I was constantly trying to better the situation, and learned a lot from my failures.
We've had 3 winters here to watch what rains and floods can do. The run off that goes down this gulley comes from a much smaller area, the water never gets very deep, nor does it flow so fast that it is dangerous. I know I will have to clean out the leaves and branches, but this one is a cake walk compared to what I had to deal with before. On our old property, I've had to weave my legs in and out of the barb wire fence to keep from washing down stream, over my waist in water, dragging branches off the fence and passing them to my husband in a futile effort to save the fence.
There is a very narrow strip of forest between the pipe line and the water gap, so that also lessens the branches that can float down stream and muck things up. Eventually we will clean along the gulley like we have done on other areas of the property.
I've had time to study this to figure out what would let the water through and keep the sheep and dogs in. I've gone out in the rain just to watch the water flow. We've had torrential rains that washed out county roads, county culverts and flooded areas. The highest elevation in Smith county is 671 feet, we are at 610 feet. So the water drains FROM us TO somewhere else. What a happy accident. LOL