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<br />Me Elmo Creek Salinity Control Unit <br /> <br />"', "...r. <br /> <br />The McElmo Creek Salinity Control Unit <br />is located in southwestern Colorado. <br />The McElmo drainage covers ap- <br />proximately 710 square miles, 150 <br />square miles of which is agricultural <br />land. McElmo Creek flows an average of <br />32,000 acre-feet annually carrying an <br />.... average of 115,000 tons of salt to the San <br />en Juan River, eventually ending in the <br />00 Colorado River. <br />en During October, technical experts from <br />the Upper Colorado Regional Office and <br />the Engineering and Research Center <br />met in Durango, Colorado, to discuss <br />the salinity control unit. During their <br />visit, these advisers toured the project <br />area, seeing first-hand the various soils. <br />farm types and farming methods, the <br />distribution system, and natural areas <br />that contribute to the salinity problem. <br />They also worked individually with their <br />counterparts in the Durango office <br />reviewing data that have been collected <br />and discussing different possibilities for <br />analyzing these data. <br /> <br />Before the advisers left Durango, they <br />agreed on the course the study will <br />follow. Data will continue to be collected <br />for both the ground water and surface <br /> <br />GPO 859.363 <br /> <br />water monitoring programs. Also an <br />attempt will be made to develop usable <br />precipitation data. These new data, <br />along with soils and ground water data <br />collected over the past 20 years and the <br />results of the onfarm studies, will be <br />used in a water and salt budget model. <br />This water and salt budget model will be <br />used to predict what effect potential <br />project alternatives will have on the <br />salinity problem. <br /> <br />Specific alternative solutions to <br />McElmo's salinity problem should be <br />developed by January 1981. At this time <br />all the data collected along with the <br />water and salt budget should be <br />developed and ready for the necessary <br />analysis. <br /> <br />For questions concerning projects <br />discussed in this newsletter, please <br />contact the Public Affairs Office in the <br />Region responsible for that project. <br /> <br />Water and Power Resources Service <br />Upper Colorado Regional Office <br />P.O. Box 11568 <br />Salt Lake City, Utah 84147 <br />Telephone: FTS 588-5403 <br />Commercial: 801-524-5403 <br /> <br />Water and Power Resources Service <br />Lower Colorado Regional Office <br />P.O. Box 427 <br />Boulder City, Nevada 89005 <br />Telephone: FTS 598-7420 <br />Commercial: 702-293-8420 <br /> <br />For answers to general questions or <br />items you would like to see included <br />in SALINITY UPDATE, write to: <br /> <br />Editor, SALINITY UPDATE, D-1000 <br />Colorado River Water Quality Office <br />Water and Power Resources Service <br />P.O. Box 25007, <br />Denver Federal Center <br />Denver, Colorado 80225 <br />Telephone: FTS 234-4180 <br />Commercial: 303-234-4180 <br /> <br />Un i ted States <br />Department of the Interior <br />Water and Power Resources Service <br />POBox 25007 <br />Building 67, Denver Federal Center <br />Denver, Colorado 80225 <br /> <br />OFFICIAL BUSINESS <br /> <br />.#,' <br /> <br />.. <br /> <br />POSTAGE AND ~E[5 PAID <br />U.S. DEPARTMENT 0' THE INTEIlI:IOIll: <br /> <br />~. <br /> <br />INT 420 <br /> <br />U.S.MAIL <br />~ <br />