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<br /> <br /> <br />w <br /> <br />.. <br />~ <br />e;, <br />c <br /> <br />Study." The report is currently under review by EPA and has not <br /> <br />yet been released. It deals with the control of salinity from spe- <br /> <br />cific identified sources, appraises potential salt-load reduction <br /> <br />values, and evaluates statu5 of the economic feasibility of 5alio_ <br /> <br />i ty control. TIle need for a coordinated salini ty control progra. <br /> <br />for the entire Colorado River is stressed. <br /> <br />Need for Controllin~ Salinity of the Colorado River (CROC) <br /> <br />The Colorado River Board of California published a repoTt entitled <br /> <br />"Need for Controlling Salinitr of the Colorado River" in August 1970. <br /> <br />Using available data. the report traces the average salinity prin- <br /> <br />dpalI]' at Hoover. Parker. and Imperial Oarns and r:laJ..es projections <br /> <br />for the years 1980. 2000, and 2030. The historical avcrar,e is based <br /> <br />on the years 1963-1967 and shows values below I~over Dam to he <br /> <br />730 mg/l and at Imperial Oar.! 850 Mr./l. Below Hoover Ilam. values of <br /> <br />830 and 1.090 mg/l are projected for the years 1980 and 2030. <br /> <br />respectively. Comparable projections for lMpcrial nan su~gest <br /> <br />1,070 mg/l in 1980 and 1,390 Mf,/I in 2030. The salinity is esti_ <br /> <br /> <br />mated to cause S8 to SID nillion damar.c annually for each salinity <br /> <br />increase of 100 mR/l. The report idcntific~ a nunbcr of potential <br /> <br />salinity control projects ",-hich. if constnlctcd. nir,ht serve to <br /> <br />maintain salinity near present levels. <br /> <br />15 <br /> <br />