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- - -- -- ~ 00 w u' - - -- - - - -- OlR 'sc ASC .s. Department of the Interior ureau of Reclamation Quarterly Report on the olorado River Water Quality mprovement Program Salinity Up April 1987 This issue of Salinity Update summarizes the status of all 01 the projecls Reclamation and the Department of Agriculture are cur- rently pursuing Big Sandy River (USBR and USDA) The Big Sandy River begins in the Wind River Mountains of southwestern Wyoming where the water quality is good Below Big Srmdy Dam, the river is diverted to irrigate the Eden Project Shallow aquifers near the river are Ihe source of saline seeps These seeps and springs below the Eden Project con- tribute about 116.000 tons of salt. Along with other tributaries. a lolal of about 164.000 Ions of salt is contributed annually 10 the Green River. Studies indicate that the saline water could be in- tercepted before seeping into the river Additional studies showed that lining some currently unlined canals In the Eden Project area could be a cost.eHective solu. tlon. However, further studies show that selective lining is not cost eHeclive. Reclamation will prepare a Planning Report and terminate all studies. SCS completed a separate on. farm salinity control report in '986 that recommends convert. ing the existing gravity irrigation systems to low.head sprinkler ir- rigation systems A low pressure sprinkler sys- tem alternative is cost effective lor the 15.000 acre lrrilJ..~tion salt source area Supplemen."ll. low interest loans and local cos. shar. ing at the 30 percent level will be needed The State 01 Wyoming supports this USDA low pressure sprinkler alternative Vol. 7, NO.2 Drill rig III Parado> Valley dup ",ell Note pipe raCks and pipe ramp in foreground and aceess to floor on left side Of rig Also nole people in !rOnl ot lanks on left and on Sla'rs mately 150.000 tons of sail each year to the ColorAdo River The recommended plan was to reduce the salinity of the Dirty Devil River and Colorado Rivers by collecting saline spring water in Har,ksville Salt Wash and Emery South Salt Wash and after treatment, it would be injected into a deeply buried geologic for. mation. Collection would be ac. complished by pumping surtace and alluvial water from shallow Dirty Devil River (USBR) The Dirty Devil River study area. in Emery and Wayne Coun. ties in southern Utah, includes the Muddy Creek. Fremont River. Dirty Devil River. and the tributaries of Muddy Creek, Salt Wash. and South Salt Wash. The drainage contributes approxj.