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<br />C\l <br />.... <br /><.0 <br />C\l <br />o <br />o <br /> <br />bank-cutting, loss of irrigated cropland, and destruction <br />of roads, bridges, powerlines, and other structures. <br /> <br />4. Headcutting and sheet erosion destroy range and cropland, <br />add sediment to the streams and affect crop production <br />and livestock g,azing capabilities. <br /> <br />5. A study by the U. S. Bureau of ,OUtdoor Recreation indicates <br />large deficiencies in surface-'water supplies required for <br />projected recreation demands in the Rib~Grande Region. <br /> <br />6. Quantification of Indian and Federal water rights is <br />needed. <br /> <br />Problem Area 2, ASA's 1302and 1304. Urban sprawl problems are <br />in evidence in cities that are experiencing',rapid growth. Cities <br />showing major population increases between 1970and 1975 are Albu- <br />querque, Carlsbad, Las Cruces, Roswell, and' Santa Fe. In each of <br />these cities traffic congestion, noise and air.polluti;n are notice- <br />able. Except for Santa Fe, hpusing, commercial and industrial de- <br />velopments are extending onto prime agricultural lands, Wa,Joer .sup- <br />ply for municipal. and industrial purposes are limited exc~,~ as <br />supplies can be obtained 'by retirement of.irrlgatiol1.. and transfer ~. <br />of that water to municipal and industrial us.es.< . <br /> <br />Problem Area 3, ASA 1302. Uncontrolled flood flows In the <br />Rio Grande draiflage can result in major damage In,.Espanol!li Valley <br />and in rural communities along the west 'side tributaries that . <br />enter Caballo and Elephant Butte Reservoirs. <br /> <br />Quali ty of water in .the Rio Grande decreases progressively:.... <br />downstreallr. Downstream from the confluences of Rio Puerco~ 'and <br />Rio. Salado with the Rio Grande, heavy loads of sediment r.esul t <br />in siltation of canals, laterals, and farm distribution 'systems <br />and decreases storage space in reservoirs. Suspended sediments <br />are deposited on irrigated lands which' affec t productivity. <br />Headcutting and sheet erosion occur throughout. the area ana <br />enter the stream system during periods of runoff. <br /> <br />High water tables under irrigated lands in parts of the <br />MJddle a.nd Lower Valleys requir~s'drainagefor'adequ"'te;!cr9P pro- <br />duction. Phreatophytic growth invades poorly-drained area8~. <br />stream channels and. reservoir delta areas.. These plants CO\}- <br />sume large quantities of water and contribute to the,quality, <br />deteri.',)ration of water supplies. .. .. <br /> <br />,. ,., <br />Problem Area 4, ASA 1304. Water quality is a major problenl. <br />in surface supplies o'fthe Pecos River, especially downstream from <br />the city of Santa Rosa. The natural discharge of saline springs <br /> <br />14 <br />