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<br />44 <br /> <br /> <br />iH1l8j5 <br /> <br />, <br /> <br />. aRd the,volume-ofr\l;lH.ffpre4-iet-edfl'Gfl'J" thia -recession. Since the <br /> <br />pdnaipalproblemwilli-i.sull,lly4'Av<i>lV'esu-pp lyestimates. for~e riods <br /> <br />(>fdr.o:ught the Rature-ofg-round'waterree-es-sion in other measured <br /> <br />fJtrea:ms during.Past'drouglti'e~i0ds intihatareashould be rlltller <br /> <br />carefully studie4 fBhi:m:en.toQ~, 194.2.). <br /> <br />Q\uiHtyof water <br /> <br />. . -.che~~l,qua.Uty <br /> <br />. <br /> <br />The -chem-iea'!'.eon.stituen-ts--of-watejl"'deHv-e-r-ed- t@the...toc~ pond <br />, , . <br /> <br />--O€{lllosionallyaffeqtitsusability . Most surface ,rllRoff i srelativel y <br /> <br />fre~,of -di~__lved saltsa~ul€h$ka.l,~a,lityiaRotaprobl-em~ How- <br />. . I ' <br /> <br />'. " ._:,,': I ". , ,;, <br />. evel',whe:lie ,the.draiRage..basin-ofa res.e,rvoirene-o-mpasse s salt <br /> <br />'de,posits ,the ilonce'ntration,s in the: runo.ff mayooeeme Mgll enough <br /> <br />to. render ,~lie watel"\mu~blefGr1ives.t-G<lk. The ,-qualityof di-.~olved <br />.-eal-tstele,ratedby live-$tO(l~vade.-.to.aGol'iside-rableextenL - In some <br /> <br />. <br /> <br />',' ' , <br />l~ali-t~e.s-water ....;ith,~!)n()entrati<;>ns:-<;>(~().()Q-ppm,and Mgher' are being <br /> <br />. ' , . ' <br />'u&ed;:but-geJ!,eratly'wate I' with..eoMe,n-br.ati.onsin.e*€:ee-s-of3000 ppm <br /> <br />are~H}n.ideied'und~sir~b\'Ei.::Ahigh:e-ontentof c-omm<:>n salt (Na el) <br />. , i <br /> <br />I ' <br />.i's'Pa,:l'ticularly_~s4'rab(;e . <br /> <br />, 'The-Ghemiea~..quatity..{}fwater-intheat<i>ek-~maybe in- <br /> <br />fliJiene,ed .h-yevaflo:t'l:ltioi;pa l'ticular lywhere-spil-lagei s . a minitnum. <br /> <br />Bur-lring,-<;>f,ve~etation in the collecting baain,either-acGidentally or <br /> <br />as a part of the watershed treatment, IIlay also have an effect on the <br />