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<br />r <br />I <br />I <br />I <br /> <br />II <br /> <br />Salinity Update <br /> <br />- <br /> <br />November 1990 <br /> <br />950 <br /> <br />Recent Average Salinity Conditions <br />at Imperial Dam <br /> <br />~.) <br />(}1 <br />:.-J <br />1"-'" <br /> <br />900 <br /> <br />850 <br /> <br />800 <br /> <br /> <br />m <br />9 <br />I <br />L <br /> <br />750 <br /> <br />700 <br /> <br />850 <br /> <br />800 <br /> <br />550 <br /> <br />83 <br /> <br />84 <br /> <br />88 87 88 <br />Years <br /> <br />90 91 <br /> <br />85 <br /> <br />89 <br /> <br />""" <br /> <br />Although high flows had temporarily wwered salinity levels in the Cowrado <br />River system, salinity levels have been rising for 4 years. <br /> <br />Recent trends in salinity <br /> <br />The salinity levels at Imperial Dam in recent months continue to rise. The <br />average salinity in 1989 Was 695 mgIL at Imperial Oam, up from 579 in 1986. In <br />January, the salinity level rose to 757 mgIL. The January to July 1990 average is <br />711 mgIL at Imperial Dam. <br /> <br />Forum reviews salinity standards <br /> <br />A Report on the 1990 Review, Water <br />Quality Standards for Salinity, <br />Cowrada River System, was published <br />in May 1990 by the Colorado River <br />Basin Salinity Control Forum. The <br />report reviews the plan of implemen- <br />tation and the numeric standards as <br />required by Public Law 92-500, so that <br />the Basin States may continue to <br />develop their compact-apportioned <br />waters while providing the best <br /> <br />practicable water quality in the <br />Colorado River Basin. <br /> <br />Public meetings were held at Price, <br />U teh, and Las Vegas, Nevada, to dis. <br />cuss the review. At these meetings, <br />oral statements were made, and writ- <br />ten comments were taken. The Forum <br />will alao publish the Suppkmental <br />Report that contains the statements <br />received. <br /> <br />8273.100.40 <br /> <br />U,$.ReParlm,ent <lUbe Inter1Ol' <br />B~'\) oj Reclamation <br /> <br />A.QllalWtIyReporton'j;lte' <br />Cql.t'itdO'Ri'ller Water QUality <br />. Iljlpro'Y$l1ent ~gh(m' . <br /> <br />Utah rangeland effort <br />moves forward <br /> <br />The Utah Department of <br />Agriculture, BLM, Reclamation, SCS, <br />and USGS joined forces in the spring <br />of 1990 to fund and staff a rangeland <br />study team. The team has evaluated <br />and ranked the watersheds that are <br />contributing salt to the Colorado River. <br /> <br />Reports are now being prepared for <br />the watersheds that appear to have the <br />greatest potential for range improve- <br />ment to reduce salt loading, The first <br />draft report, prepared for the Sagers <br />Wash watershed, has been distributed <br />for comment. The team plans to com- <br />plete preparation of reports for the <br />high priority watersheds by April 1991. <br /> <br />Advisory Council <br />meets in San Diego <br /> <br />The Colorado River Basin Salinity <br />Control Adviaory Council met Tuesday, <br />October 23, at the Bahia Reaort Hotel <br />in San Diego, California. <br /> <br />Elections were held for Chainnan <br />and Vice Chainnan of the Adviaory <br />Council. O. Larry Anderaon was <br />elected Chainnan and C. Lawrence <br />Linser, Vice Chairman. <br /> <br />Council members were briefed on <br />the status of salinity control activities <br />and provided input for drafting the <br />Council's annual report. <br />