All through this part of Idaho we see these giant, circular, above ground irrigation systems, bringing water to thousands and thousands of acres of farm land. I am told by a long time resident of Idaho that they have perfected these systems so they deliver a fine mist that doesn't damage the foliage. I also learned tht it is the water pressure itself that powers these giant, wheeled contraptions. As long as they have an adaquate water sourse being pumped in at the one end it will rotate the equipment over the field. Remarkable!