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<br />U. S. Forest Service, reported on the progress of the regional forest <br />plan. The Plan appears to be coming up with an incidental water salvage <br />of 9,000-15,000 a.f./yr, accumulative, with a steady-state level of <br />148,000 a.f./yr salvage. Mr. Silvey said that a water-yield-improvement <br />option had been identified, but was not. adopted. Al so, the U. S. Forest <br />Service plans do not include special measures such as snow fences, type <br />conversion, etc., but only cover the planned cut of commercial timber. <br />When these plans are released for public comment, in about three months, <br />then those concerned with water-yield-improvement should so comment. <br />The Forest Service plans to respond to these comments. Mr. Pete,Stender <br />of the Intermountain Region, U. S. Forest Service, discussed their <br />regional plan. He distributed a seven-page document which contains <br />material on water-yield-improvement from their draft plan. Mr. Stender <br />pointed out that there is only a relatively small area of commerical <br />timber in his region within the Colorado Basin watershed, so that tim. <br />ber harvesting has. only a minimal potential for increasing water yield <br />therein. He also said that when the draft plans are available for comment, <br />those concerned with water.-yi e 1 d-; mprovement shaul d submit cOll1llents on <br />additional measures such as snow fences. and type conversions. <br /> <br />Mr. Phil i P Bri ggs, Ari zona Department of Water Resources, put to- <br />gether a program on vegetation management activities in Arizona for the <br />Subcommittee. There were six speakers, with representation from Federal, <br />State, and local entities. <br /> <br />Mr. Bill Mathews, Flood Control District of Maricoa County, spoke <br />on Gila River Phreatophyte Clearing. The project is designedto remove <br />vegetation clogging in the main channel. A 1,OOO-foot Swath is being <br />cleared, with costs running $350 per arce. There is little grading involved <br />to reshape the channel. . Benefits are hard to define but it is worthwhile <br />from, a public relations aspect. <br /> <br />Mr. Mi ke Hart, Ari zona State Land Department, spoke on the Watershed <br />Manijgement Program on State Trust Lands. Most of the management on. s.tate <br />trust 1 ands is done by 1 eases under plans approved by the Department. Water <br />is considered, if not directly, as an indirect benefit of all management <br />programs. <br /> <br />Mr. Philip Briggs, Arizona, Department of Water Resources, presented a <br />stijtus report on Water Augmentation to Ai din Groundwater Manageme'nt. <br /> <br />Mr. Richard Krebill, U. S. Forest Service, Rocky Mountain Research <br />Station, spoke on U. S. Forest Service Research Projects in Arizona. <br />Laboratori es are at Ar; zona State Un i vers ity and Fl agstaff. Studies have <br />been made on the potential s for water yield i mprovementi nthe 'Colorado <br />R.i ver Bas i n from vegetat i n manijgement, bi 0 logica 1 treatment, herbi ci de <br />control and biomass utilization. <br /> <br />. <br /> <br />Mr. Ray Turner, U. S. Geological Survey, presented a sl ide review on <br />Vegetation Changes along Arizona Rivers, Changes were documented by <br /> <br />B~24 <br />