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<br />Di'::'::'RIPI.iJN -~F 3A.,I:i
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<br />'1"'< rc"erv"ir, r'''ent"y e,,"sCrueled ab'n, Le,' Ferry (Lake Fowell,
<br />Flamin,; Gerge, em,tenel]e, Navajo. l'.orrow PO'nt, and 31ue Mc>sa), to-
<br />ge'her '.'lU, Lake Mead JO",15t1'o=, have eauccd ,'O~e "".jor changes in
<br />"t1'"am reglm,'n, (1 The 'Ll'e,,", "iJanneh inundated oy the"e reservo'ro
<br />will no "~'"e,er " '""jeet"d ',0 se'tural strea", ',r'oc'on, (2/ the ao"umu_
<br />lation,,. sediment ann wator within '.he reser.-o:r, "cows the gro.-'th and
<br />nood:ng or the ~oluraJo Riv,'r delta. (-) n od'n,' j'as d:"ln'shed in
<br />,".on}' areas, and ('J seetiuns oi' sediment-lader., "'ream, have given "'oy to
<br />~lear wutcr ~treilln; and lakes.
<br />
<br />The miw_.ral ,~.o;l,'entrati )!; in l'1lnuff ":nc:rca:;c
<br />area~ rfO"'":lstream and OC'Cllr;: "::n r'=lation to th.- g,
<br />tUTa":n a'..TO:;ri ..rhicn thc' Colorudo fU Ver and it
<br />;,_~o) ,"~-' :'or:r.Btlon:; '~hat lXl.l'gt,ly -.'ontr!:bulr_ :,
<br />tio!"" 1.[', na-:;ural !llnDl'f :.u'e c",raporit(,~ of Fnl.
<br />tn", JU. aG~'. <1:}'1 ;..a,' awl Q1'::tL"7l of Tr,rticu',} :.t,':",
<br />
<br />f'!:om Lhe h(;'.'id......a.ter
<br />llogll: ..::har.'ll:te1' of thf'
<br />r:but.urie:..: now. The
<br />l_i1( :n~~er;11 co.nc~ntra_
<br />:0 ~' up'. 'Lnl~ }f' Cre-
<br />
<br />!~. SoiL
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<br />
<br />The soils or tlu Colorado River Bu, in do,,"," re',emo.lo the "cologie
<br />for'''''''ons of their ori"ln. only in limited areos at the higher eleva_
<br />tions has the precipit"tion leadwd the u,'il "nee "J' it, Soluble "-on-
<br />stituents. Ovcr mOst oj' the W'"a both r"slduni ''''" transported soil,
<br />or, basic in readlon and '.ell uuPpll'd with ca"bonates with non"'l or
<br />""'ture" soi's o"'bHin" a '''''tinct horiLon or "',-boDac. ac^unulation.
<br />The impress of soll_ ,"rming raetoru hau "CSULt", : r. ti", " iJ""pread de-
<br />velopment of soiL '[",oined as members M ',b, OraY-Lccrt Great Soil
<br />C1'OUp, In areas .,'U, "'Cbe:' "3;"'-0.:., soils ,j' 'h. jr'......n "nd"lec'tnut
<br />'Creat .v: 1 Groups l.ave devdop,'" ::alin,.. a,,,,, "..'-a I Ci <, niL occur
<br />.' IT'o'l::y a--'- l' h ::'8.:'1:"1.
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<br />the,
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<br />.::: rie~:!. NCr !,."J. '-1: ~t ~::lI"--l. '.l V3.1'10\1.
<br />::L;:'C SEl.li.r:.e but ':':O!lta~r: :m..cL Q1l'..:...~ a:: we Il.'
<br />phute ;c3,.i,-~:. Some fOl":r.at io,.,: a:;-',., .'lig,,; ,.- ,On
<br />'-jOt: '.1r.l i..~a1'bc,.atL' 01' :JI ~arbGr.at{ ~;t.rutu.
<br />.9.r~~ -;ui table for .1';" _-_" ,:m 'ie.....f:.lop::J,!;~
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<br />:'onrr' <0,
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<br />:.:.r:',:" a~'(','l ::L:';'1 ~2'e
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<br />.:~ua L;}' :ballo...
<br />:' '~he shale;:;
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<br />:':"'-:1y
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<br />'-"_:-;'~!>~b :_,_ rIde r.:.nd ~uj-
<br />;il'l -.!lior. dt and O."!le have
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<br />o'ery
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<br />"': r,-
<br />
<br />" J~i
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<br />so
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<br />L arcu:;
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<br />'r!:.~ u-'.luy'_!'!. !rQ.' -Ti.3.-L: al'e
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<br />"_aJ.. fCi.!:,- a:-,j te.r!"(i2'.S. ou.t",;a::h
<br />a1'f<I... have::. iL !'1'om :r;;:~tel'ial
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<br />~;':~,.r'.~~t;'lJ ....a!" Lab a.:.'..:. .rw'6'2 ,.'.ror: allu_
<br />~b.2,J:.:tr'i::, 'cL::!2!.t.. .,:;.ome
<br />:,.1:,. .;-, 'r~ u_ :0.."'_'(: a.::u re-
<br />":;. ~~. a.~'l-a~ nCiV" ....L~..:!; :-jav~. been
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<br />,:'a.r:._:port 'do
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<br />llr~ C':~ ~.h~~, ....'0:.1. -:-:i:-;,
<br />''"'l!'labl.e.
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<br />!.!o. -::
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<br />::l.~.L-=',"~'..L,;,,- an.!." t.:;,,!,.
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<br />:hr
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<br />::-:-: (>!ls.:.v€, area.. ,.
<br />~ipc:.l<,.. ~n .;;;0;;.t1,....., t..:!.:,
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<br />.::.u...lar.
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<br />:k'po ""v
<br />The ur.i
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<br />:of tb' Ga. in, pl'ln_
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