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<br /> ~: , <br /> f <br /> TABLE 1. FINAL SELECTION OF LATERALS INCLUDED IN PROJECT <br />W Lateral Area No.of 51 <br />C> Identification Canal Hectares Acres Irrigators- <br />0 <br />CD HL C Highline Canal 13.1 32.4 1 <br /> HL~ Highline Canal 35.9 88.6 2 <br /> PO 17711 Y price Ditch 27.8 68.8 6 <br /> GV 92 Grand Valley Canal 24.3 59.9 6 <br /> GV 95 '!J :3.1 Grand Valley Canal 79.1 195.7 13 <br /> GV 160 Grand Valley Canal 78.7 194.3 8 <br /> MC 3 Mesa County Ditch 3.7 9.0 1 <br /> MC 1011 Mesa County Ditch 54.0 133.4 9 <br /> MC 30Y Mesa County Ditch 14.1 .2!02. 1 <br /> TOTAL 330.7 816.8 47 <br /> <br />!I These laterals were part of the earlier EPA funded canal and lateral <br />lining study. <br /> <br />~ This lateral was part of the earlier EPA funded field drainage study. <br /> <br />1I This lateral consolidated an additional 70 acres from two other <br />laterals. <br /> <br />!I A portion of this lateral was included in the previous EPA funded <br />irrigation scheduling program. <br /> <br />~ An irrigator is defined as a person who farms more than one acre. <br />In actuality, 89 persons are involved in the operation of this <br />project. <br /> <br />The selection of a lateral as a subsystem, rather than an <br />individual farm, had a tremendous advantage in allowing control <br />at the lateral turnout. In this way, both the quantity of flow <br />and the time of water delivery could be controlled, facilitating <br />improved water management throughout the subsystem. <br /> <br />A variety of irrigation methods have been demonstrated, <br />including "tuning up" present irrigation methods being used in <br />the study area. Considerable experience has been gained in <br />improving the existing irrigation methods while evaluating irri- <br />gation scheduling as a salinity control measure in the Grand <br />Valley. In addition, more advanced irrigation methods have been <br />evaluated as to salinity benefits in the Grand Valley. The <br />irrigation systems constructed under this project included auto- <br />mated farm head ditches, sprinkler irrigation, and trickle <br />irrigation. <br /> <br />The most significant aspect of this particular demonstration <br />project is the employment of a salinity control technology <br />"package," rather than a single control measure. Experience in <br /> <br />11 <br /> <br />.---:.. <br /> <br />