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<br />Description of Area: <br /> <br />ASSESSMENT SHEET <br /> <br />LAND QUALITY LEVELS (Con.) <br /> <br />Virgi11 Valley Sub evaluation Unit, Arizona, Nevada, Utah <br /> <br />Parameters <br /> <br />Considerations for <br />specific uses <br /> <br />Cropland <br /> <br />Soil management systems <br />1/ <br />A. Adequate- <br />B. Not adequate <br /> <br />Production Potential <br /> <br />A. More, than 90% of <br />potential <br />B. 70 to 90% of <br />potential <br />C. Less than 70% of <br />potential <br /> <br />Water management systems <br />acres <br />~.l <br />A. Drainage, total <br /> <br />1. Adequate <br />2. Not adequate <br />3/ <br />B. Irrigation- <br /> <br />1. Adequate <br />2. Not adequate <br /> <br />Pastureland <br /> <br />Production potential <br /> <br />A. More than 90% of <br />potential <br />B. 70 to 90% of <br />potential <br />C. Less than 70% of <br />potential <br /> <br />Unit <br /> <br />Percent <br /> <br />Percent <br /> <br />Acres <br />Acres <br /> <br />Percent <br />Percent <br /> <br />Percent <br /> <br />Present <br />Conditions <br /> <br />Future Conditions <br />Planui11 Alternatives <br />Future <br />Without 1 2 <br /> <br />25 <br />75 <br /> <br />30 <br />70 <br /> <br />40 <br />60 <br /> <br />25 <br /> <br />30 <br /> <br />40 <br /> <br />60 <br /> <br />60 <br /> <br />50 <br /> <br />15 <br /> <br />10 <br /> <br />10 <br /> <br />2,580 <br />360 <br /> <br />2,595 <br />320 <br /> <br />2,715 <br />200 <br /> <br />25 <br />75 <br /> <br />30 <br />70 <br /> <br />70 <br />30 <br /> <br />25 <br /> <br />40 <br /> <br />30 <br /> <br />60 <br /> <br />60 <br /> <br />50 <br /> <br />15 <br /> <br />10 <br /> <br />10 <br /> <br />1/ For 1979. <br />2/ Total acres of cropland that would benefit from drainage practices. <br />3/ Includes conveyance and onfarm systems. <br /> <br />A-6 <br /> <br />70 <br />30 <br /> <br />50 <br /> <br />40 <br /> <br />10 <br /> <br />" <br /> <br />2,815 <br />100 <br /> <br />:'1 <br /> <br />85 <br />15 <br /> <br />$c <br /> <br />50 <br /> <br />40 <br /> <br />10 <br /> <br />,"'\ (') '" f',- t'". ~ <br />\ " v";' ( <br />