|
<br />19-U to 187~ peri(,d, depl...tion" du... to land ,on:-er-
<br />\'ation rnea,"ure" hUH' in,rea"",d from 1:1 .6 pf'rc€'llt
<br />"hare to a 1.2 pt'rn,nt :-hilfl' of total d€'pl(,t ion", Ihlfin~
<br />that period, th... arr€'ag(- o[lImd I'on"t>r....alion m€'a"Ufb
<br />han' mn...a:-...d from ahollt :!.fl million acrE''' in HH~
<br />10 aho\H GA million in 197~. [)uring thi" ,;ame penod,
<br />lull :-1'r\'icl:' Irrigall'd acre" irJ('fe:l"t,d from 9-1;),0(10 tll
<br />1.\.11,,')110 acrb. or an inn...a"... of ahuut PH'';J[Hllil'fb;,
<br />
<br />~trf'aml1ow ,l('('f(-tion~ due 10 Infl>"1 management
<br />pwctin>" m Iht, :-uhh,1,.;in WN(' e"tllllHTPd at 12.:!(lO
<br />iwre-ft'el in 1~II-l. il){'fl'ihing TO :t7,1,(Il) ant'-feet an-
<br />nuall,\- in 197:-.,
<br />
<br />During the H\.l~ II> 1H7'" 11l-rifJd, the popu[;ltion
<br />..hilled from a prinmrily rural pllpulation ul ah"uI
<br />171",-\00. or h,""--; 01 the total populauon, to Il mort'
<br />('Hnh' halann,d "plit of ]I;:!,-lOl) rural and 1.11,;"\00 ur.
<br />han,
<br />
<br />From 19-1~ to 1971'>. tolal annllal dl>plt,tion~ III thl~
<br />~llhha_~in itlCrt';bt'd h, abollt ;)";'0,000 acre-fet"t an-
<br />nllaU\, The Incrt'[I~E' 'in total annual dep]l,tion" lw-
<br />twet'l1 I 91i1 I and WH. a~ "hm~n in Fii-.'1lfl> 20. i~
<br />
<br />Figure 21
<br />Uppef Missouri Subbasin
<br />1978 level Depleted Slreamflow
<br />Missouri River at Culbertson, Montana
<br />1944,1960 and 1978
<br />
<br /> 12.000
<br /> 11.000
<br /> 10.000
<br /> 9000
<br /> 8000
<br />%
<br />. ,_000
<br />C
<br />,
<br />g 6000
<br /> 5000
<br /> '000
<br /> 3000
<br /> 2000
<br /> 1000
<br />
<br />\
<br />r SuObas," H.stone DeplelK>l1
<br />"
<br />~ - HiSlone Sueamflow
<br />g Subbasin 1978 Lewel
<br />1: ();:>p1ellOn
<br />,
<br />~ -1976 Lewel
<br />u; Depteled STreamflOW
<br />
<br />"
<br />z
<br />
<br />n
<br />A~t:'lage ....'SloIlCS/raamllo""'
<br />7.880.000 A F
<br />
<br />19-1-11g78
<br />
<br />Average 1978 Lewe/ Deplf'-'red Sfreaml/ov. 19-14 19'"8
<br />7,740,000 A F
<br />I
<br />
<br />19':':
<br />
<br />1960
<br />Yeill
<br />
<br />1976
<br />
<br />:!t;
<br />
<br />attnlJult'd 10 an inne<l~e in irrigakd anI"" and watt>f
<br />ll"e. Other deplt-tor, may ha\t> inl"ft'fi"t'd tht'IT con-
<br />~umplinn 0\'(>( fhi.~ pt.nod 01 lilTle al,;,o. The dt>ne;:l:-e
<br />III towl ,1Il1l1Jal dt'plt'ti(ln~ bt't.....eE'n l~fiO and 19i5 i"
<br />:lttrtlltlll.d III iJ ('hange ill Irrigation pT<lelict', and 1I
<br />e1een-a"e m irrigatt'rl i\('n'~ lhruughout thf-' flt'riod "I
<br />tlllle, .-h de_~niht'd t"arli...r. tht- !--,urpfJ"t> 01 id(>ntit\-'ing
<br />tht" ....att'r u"t'r~, e"ttrnating dl"p]dilJn" over the fJt'rilld
<br />]9.l-ltu HJ7."l, and adju,.,ling the hl,;,tlJric "tn~amtlu\\ III
<br />a pH-~t'nt I~'\(>] 1197~1 ot Ot>\'e!(ljlllWllt Wil" 1lJ determine
<br />him murh Willl;"r i~ yt'l a\ailllhlt" lor ll.~e. A gfaph (II
<br />~t"le('lt>d \ellr.. 01 tht- 1!-l7.... !t"\'e! tkpll'tl'fi "trt>amtlo.... i~
<br />~hown Ol~ Fig-ure :21. On the <1\ (.ragl', ha"t,d ,,1\ Ihf-' j9-t-l
<br />to W7,,,; adJu"tl"d ~trt',lllltlo\\ and ~ubj('(,t tll ..talt. watt'r
<br />ri~hl", inler"I,lte t'(lmll~H"I", ;llld Ill~treamt1uw n>qllire-
<br />n1t'nl~, 7.71(I,(l(HI a\'f('.l,'t>! annual I:. ilrt> 11\'ui]al,le for
<br />all 1l0n-('IlII.'Ulllpti\l' and nt.,\ t'lm:-lllllpti\e u"er~
<br />aho\t> thl~ ~lrt'~lTn g-agt",
<br />
<br />Yellowstone Suhbasin
<br />
<br />Thl' Yello\\,..tolll:" :-;ubha"in ('''\t>r_~ 71I,t-i:!~ ~qllarf'
<br />milt,~ in 1 ht. ~\{'~l rt"ntral part III Ilw :\Ii,;..ouri Bi\'t'r
<br />~b:-ill. Fi\..'1Ht' 2~, I'rifwipal [nIHllari.." "l' tht' Yt'l]ow-
<br />~tIllH' Bi\t'r lIldllclt, Iht> \rllld-Bighurn. Powder.
<br />T"twll(', ;mt! I Ill' ('Iarb F"rk Bi\t.'f';', Th.. t'a,;lt'rn par!
<br />01 tilt' h;l~ln i~ a fl'gil>l1lJI pla1t';lll~. plaJtl~. ancll"ol;IIt'(1
<br />mounlain ranf:t"~ ""ilh t'lt-\ati"lI'; IrlJlll ;l.lll II I tIJ li.liOli
<br />1E't'l. Huggt.d !JUluntall1,; and hrlJad \"lllt'y,; l>t'l"llr in Iht'
<br />"(',.,tern and n'ntral part of the h.hin. I'lakiuJ" art' at
<br />Iht'IJ)(IO fed t'le\'1ili"n WIth peab tu ],I,(J(UI ff'pt, A
<br />~mllll parI llr tilt' t'a~tt'rn lJ;t"in l.~ a rdall\t'l~- "monlh
<br />plain With t'lf'\alil>tl~ lrom l,.",ll\i tll :-1,000 It,t'!.
<br />
<br />Tlw "uhll;bll1 an';! i" ahollt t'1l:"nly ..plil 1lt'lwt"ell \\\-
<br />"llllll~ and :\I"ntilll:l wllh a 'Illi.lll pilrl, including" lhl'
<br />ril','r~ t'oI111u('I1<'e WIth tht. :\1t~"Ollri RI\er, to('att>d In
<br />,,,rth Ilakuta,
<br />
<br />(;ra.~~land i:- tht. pft'domina\(. l'ro~~'"lt'lll with dt,-
<br />t.!duou.. WI "idlalld~ ot'currin.: ,dong ..I rt'all1"_ Therf' are
<br />pri~lltlt" rin'r..rapt''' with In.t..!1(IWlng ~I r('am,;. high al-
<br />pille l'latt'au~, ~n'nk Cal1\'II11~. and rugg...d "now-('o\'-
<br />"f('d pt"ak~ Hal1dlln~ i~ l he III II'; l important
<br />agnl'u1tllral ~t"rt"r, T'l\lfl~m i~ ill", a \'t'r~- ,;,ignirieanl
<br />~et't"r "I tht, art'il''; .'clJnom:.
<br />
<br />(;rollno water rt'''U\lr\'I>~ ;-lre ]imllt>d In valll'y-filllll.
<br />1m-lid ;Iqllit'er~ along ~ln>lIln", Dl't'P aquifers. "m,h ;1"
<br />tht. :\t\(li""fl. whilt- Illh'rin~ ""Ill(' p,'tl'lllial lor Indu~-
<br />tria] r..]att.r! dr>\'elnpnwl1t". ar;' pn'~t"ntl,\ nol Ilrllviding
<br />~l~!lih';lllt W;lll'r "llppltt.", On.rall. ~f(Jund \~alf'f I" not
<br /><Ill 1I1lportant ""llrce llr \\iltt"r III Ihe "uhha"in.
<br />
<br />The majnrit:. "j Iht, "urIan" walt'r urig-inalt>" a"
<br />Illfluntilln "nnw III th.. H't-{'ky .\l(JtlTlt.IlI1~. .....,. Il Tt'''Ult,
<br />hidl 111Jw, O("CUT 1Il ,Ium' illld .Jllh wllh [f)\~ llnw:- in
<br />Iht> wintt'r ml>llth~, Tht" ~llrlilrt' \\a\t'r OUIllfl\\ pOlOt
<br />"f'lpt'tt'dlnr lhi~ ~uhha..lIll" th{, l':-;(;"';' /!il!,:,t' OJ);i~~l,il)jl
<br />lllt'atf-d ()Il lilt' Y{'II(1\\~t"l1(' Hi\'i'r near ;-;jdney. :\1011-
<br />lana Tht, dram<l:;t' art><1 abo\(' lhal pOlllt j.. 69.llJ:J
<br />~4uafl' milt'~ For thr. El--t~ tfJ 19:-.'" pt>rind of rt'cofd,
<br />the il\t-Tag;:' ft'('IJrdt>d "lfeaml1o\\ III that point .....a"
<br />1:?,91:1 t',L", Ilr ahnlll !I_:~;. mill inn ilcrt'.!t>et annually,
<br />
<br />j
<br />
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