Show WOODEN FLUMES ARE COSTLY extremely wasteful of water soo pulling apart and cracking concrete Is best material wooden flumes blumes are atilt built to some sections notwithstanding the progress that Is being made in irrigation development the first cost of these is high in most places but no matter how cheap may be the cost of 0 CO construction it to la generally the least expense to put in the better systems such as aa are ip in use in wyoming A wooden flume requires constant re it Is extremely wasteful of water soon coon pulling apart and cracking from the effects of the alternate swelling and shrinking or of the materials it Is expensive to build and maintain a flume anywhere especially across broken or rolling landt of necessity a flume must be built on a uniform grade it Is there foh that it should be supported on a trestle or embankment across low places the embankment Is subject to injury from burrowing gophers and both trestles and embankments are subject to wash outs and the more modern theory to la to obviate all this trouble by putting in concrete conduits or siphons conforming to the lay of the land and having enough strength to withstand a medium pressure |