I have recently bought a house with an acre field that I am hoping to use for keeping sheep. The field has a small stream running down one side. The stream is only small, maybe a foot or two wide and the ditch it runs through is only about a foot deep. On far side side is hedges and neighbours garden fences which stops me from fencing that side. My plan is to fence down the side of the stream in our field to keep the sheep in but halfway down where the ditch is less steep, fence a small square area so the sheep can get in to drink from the stream. Is it ok for sheep to drink from a stream?