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<br /> <br />o <br /> <br />><, <br /> <br />N <br />~ <br />A <br />N <br /> <br />SYLLABUS <br /> <br />This section furnishes information on the availability and <br />quality of surface and ground water for domestic and industrial <br />water supply, magnitude of the different types of present water <br />use for those purposes} future water requirements, existing water- <br />supply facilities, various water-supply problem areas, and poten- <br />tial solutions to those problems. <br /> <br />In a large part of the area, water quality changes very <br />markedly with streamflo.... When discharges are high, water quality <br />may be excellentj when discharges are low, water may be unsatis- <br />factory or even unusable. In a relatively few areas there are <br />streams of excellent quality at all times. With the exception of <br />the mountainous parts of Colorado and New Mexico, the western half <br />of the AWR Basins normally has a low rainfall resulting in streams <br />having little or no flow during certain seasons of the year. <br /> <br />Parts of the area are underlain by ground-water reservoirs of <br />large storage capacity from which the pumpage through thousands of <br />wells now totals more than a million acre-feet annually. other <br />parts of the area are not SO fortunate. Information as to the <br />quality of ground waters is far from complete, but quality of <br />ground 'later is known to be a limiting factor in water-supply <br />development in parts of the area. <br /> <br />Present average daily water use for various purposes in the <br />basins} future requirements, and future needs are shown below. <br />Future needs are future requirements in the year 2000 less the <br />amounts being supplied from present sources, except where it is <br />exPected that the present source will be abandoned because of poor <br />quali ty . <br /> <br />PRESENT \VATER USE MID FUTURE NEEDS <br />(million gallons per day) <br /> <br />Present Use <br />132 <br /> <br />Futu:ce <br />Requirements <br />Year 2000 <br />237 <br /> <br />Future Needs <br />Year 2000 <br />105 <br /> <br />Rural domestic from <br />pri vately mmed <br />facHi ties <br />Municipal} including <br />amounts for rural domestic <br />use supplied from municipal <br />systems <br />Industrial <br />Steam-electric plants <br />Total <br /> <br />;;06 <br /> <br />l,238 <br /> <br />740 <br /> <br />1,;;43 <br />1,600 <br />3,7(Jl <br /> <br />3,014 <br />6,324 <br />10,tl13 <br /> <br />1,471 <br />4,724 <br />7,040 <br /> <br />viii <br />