Laserfiche WebLink
<br />Laser leveling employs a laser beam that acts <br />as a guide for a scraper that scrapes soil from <br />high places to low places. Usually highly un- <br />even fields are leveled out more broadly in the <br />first stage, by a field leveller. It is not until the <br />second stage that the laser guided scraper is <br />used, to fine tune the level of the field. <br /> <br />Laser leveling smooths out the field so well <br />that the difference between high and low <br />points is usually not more than an inch and a <br />half. The evenness of the spread increases <br />twenty percent, from seventy percent to <br />ninety percent-which means that the field is <br />more evenly watered, so less water percolates <br />into the groundwater table while yielding a <br />higher crop. <br /> <br />Success Stories <br /> <br />In 1973 when the Colorado River Indian Irriga- <br />tion Project at Poston. Arizona, initiated a <br />Water Management and Conservation Pro- <br />gram, it was diverting 11.0 acre-feet of water <br />per acre onto the projected lands. Seven years <br />later in 1980, that diversion was 7.27 acre-feet, <br />down 3.73 acre-feet an acre. This is a savings <br />of approximately $600,000 in water costs per <br />year to the farmers in the project: the water <br />that was saved allowed the tribe to develop ap- <br />proximately 11,000 more acres. <br /> <br /> <br />u.s. Department of/he Interior <br />Bureau of Reclamation <br />Lower Colorado Region <br /> <br />Yuma Projects Office <br />Po. Box D <br />7301 Calle Agua Salada <br />Yuma, Arizona 85364 <br /> <br />(602) 343-8113 <br /> <br />tJ.> <br /><=> <br />0) <br /> <br />~:..'" <br />