|
<br /> Table 3
<br /> Historic Trends - Acres Under Irrigation
<br /> (Surface and Ground Water)
<br /> (in 1.000's of acres)
<br />SubbaSll1 1944 1960 1978
<br /> Surface O"'u"" Surface O"'u",, Surl~ O"'u""
<br /> Water Water Water Water Water Water
<br />Upper M,ssoun 12b6 1,548 1495
<br />YeIIowstQrl(> 1.102 1,263 1,149
<br />Western Dakota 103 260 '83
<br />Eastern Dak01a " 13 262 '26
<br />Platte-NIObrara 1.730 238 1,985 809 1.963 2,914
<br />MtOc1leMlso;oun 53 , 282 ,.
<br />Kansas 17 5. 192 8.3 '32 3,216
<br />LowerM'ssourl 10 73
<br />SUBTQT AL 4218 29' 5.335 1.689 6.139 6.272
<br />TOTAL 4.512 1.024 12.411
<br />
<br />Hl\er Ha~in_ Data wa" (,ltlll't"lt-d for the pt'tiod EI-I-l
<br />Ihrough 1!liR. Irrie-ated ane." b.\ "uhhH"in lor ,,/;'ll'cH,d
<br />war are "h"wn in Tahll' :t :-,imilllr datil i~ 1l\-ai]ahle
<br />irom t hI:' \\"att'r ..\n'olllltinl! :-\Y~ll:'m Databa,,/;' lor each
<br />u! tilt' yt'lH.. 1!.l.I-1 tbro\lg-h Wi';' for e1-lch nfthl:' 9:l nod(,
<br />ha"ins_ From the datalllbt>. the ,lcrb undt'r ITrIg-Milln.
<br />g-round wat/;'r \er.;u" "urran' W;l!l'r, .;hem tbat .;urfiln'
<br />irri}:iltioll aneagt' ha.; n'mainf'cl rt']llliw']y l'Cln"i"tt-nt
<br />on'r the period of ;;.t\ld~- in all tht, .;ubha.;in". Thi:- I"
<br />al"o trlle Illr ground wall'r Irrigation with the excep-
<br />tion of the Platt(>.~iobrara and Kan"a" ~llhba"ill"_
<br />The appruximalf' Iwnod 01 19;"J.') III EliS "hows a dra-
<br />mali(' increa,,(' in thl' nllmh(>r 01 anes undt'r ground
<br />water irrigatinn in lhll:-l' "lIbha!'in", Ant':- cOI1\t'rll'd
<br />10 ground water irrigatilln fl>!'t' Jrolll ahout ~OO,OOO In
<br />':i,IIOOJ)OIl during Ihat time pt'ri"d. From 19H-19il'l,
<br />i,K99,nou addltil'na] ane:- w/;'re put llndt'r Irngation in
<br />lht' \h:-""un HI\'t-r ha,:in. Of that total. i;,~....~,(IO(f acre,
<br />I~?r;f \Wn' III tbt']'lallt'-:\iobrara and Karh,t,.; Suh-
<br />hasin.._
<br />
<br />~trt'amn(Jw depll'tiun:- from Irngatlon nlland." frum
<br />"urfacl' and g-round watE'r art' illu"trat/;'d nn Fie-uft. ::!.
<br />In lhe \Ii~,,"uri RiHr Ba.;in. from 191t to Hli1\, dl'-
<br />pIt-lion,. Jor irrigation trom ground W,Ht'r Inne<l:-f'd
<br />from O.7'f III ~U": 01 tht' total dt-pll'tion Depletion."
<br />due to {'\'aporatinn from major rest'f\'oir, at'countl'd
<br />lur 1,1.}r,: of the tntHI deple-tion..; in 19i5. Depletion~
<br />from Mil remulIling ci-Itl'g-orit':- were grouped lIlto an
<br />"Oth..r" ('al~'J;:"ry and an' al"o displllYl'd nn Figure ?
<br />[It'ple-tl(ln~ fur t'o!""'f'rnHion mf'a"urt',. find farm pond"
<br />incre-a,..ed during Iht:' HI~~ 10 19i" pf'rind. Ant:'.; of Iowd
<br />treat/;'d h.... ron"ef\alion ml'a"un'" innea,,,,d during
<br />thaI pt'rind Irnm 16,7 million to almo'l .~>fi millIOn
<br />acrt',.., while farm pond" increa,.ed b.... a total of n\t'r
<br />~:?I f,OOO an/;''' fqr t h/;' .;alll/;' period.
<br />
<br />,
<br />
<br />Ibtlll'"IIt'('li'lll and alla]~'sb "t Wi\tN lI,.agt' for pur-
<br />IIIJ",." "lhl'r than ag-ricultuf\:' wert' nJndllcted within
<br />lour ha'Jt' eatt'g"rw,,: 1I111llil'lpa] watt'r U"I', ,,/;'If-,.up-
<br />pli/;'d indll'itrial walt'r 11:-(>, "Ilt'rl!~ watt'r U:-I', and rural
<br />dOllw"tic walt'r U>'l'.
<br />
<br />:-\l:'\t'ral "igllltic;1ll1 tat'l... and treml,. art' t'\'ident in
<br />tllt'data l.(Ioking lir,.1 from a "uhh,bin \'It'wpllinl, the
<br />lIht":-l gTOwin!.: tlllal watN lI"t'. hy )lern'nti\j.:"', is found
<br />III tht, E,b(t'rn Daktlta :-'uhhasln; whde the gn.atest
<br />IlH'fl',bt. in tot;.l W<itt'r u,e, h~' \'OIUIlH', i,. fuund in lhe
<br />I'Iatte.~ilJhr;!ra ~uhha,ill. ~lIt unexpectedly. the
<br />l'l;!tte.~i(jhr;lr.l SuhhR..in is the ]nn;t':-t lJ.;t'r (If water
<br />tlJr munlnpal';:O'!'lt'mS in l~li" primHrily due to urban
<br />growth a]oll/! lh" Fr"1ll Hang/;' in Colorado (four of the
<br />lt'n l<lrge"t citib in th., ba..in ar/;' hWalf>c! in ('lllllrado
<br />lh'll\'t'r, Aurora, [.akl'\\,,,,d. ami Arvadal. The only
<br />dt'rrea,..e In wal/;'r \1:-1-' during tht, IH,11-19iS pt'ri(Jd was
<br />for ",n(>rg~' U:-t' in the Kan..,\!' ~uhha;.itl.
<br />
<br />For lbt' t"ta] \Ii_""Ollrt Hin'r Ha~in,lh{, fa~lf';.t grow-
<br />ing llUn-lIgnt'llhural c<l!t'l!nr:o Il( watt'r lb(', h\ per-
<br />n::ntagt'. I" for ellt'rl-,'\' prtlle""lllg, t'xtraeting, and
<br />i!/;,llt'ralllln: whjlp tht' !::rt';Ul:'st Il1cren"e III Willer u,.e.
<br />b.\" \"olurm', I,. fllr municipal ,..y"lt'm!'. Til/;' larJ;::t>~t 110n-
<br />a<:ricIIltural 1I,.t'" "f l:TO\lnd WoliN, ha.;inwide. are for
<br />munll'ip;-J] and rllral d'lmt'''lic purp,,"t'''.
<br />
<br />llatil lor the:-t' tour Ilotl.a/!ricultllral U~t'" i!-IJlate :'t'v-
<br />l'r;ll ,alit>nl 1'<1('1", Trend" 111 a\eragt' "itl' u;.e (If water
<br />fnr t'1lf'rg:\ and II1du,trial pllrpo:-t.~ ha\f' vaned widely
<br />1J\t'f the l'i!=hl ~uhba,.in;.;_ Thi.. I." prlJhah]~- due 10 lhe
<br />\'aril't~, (II I,l\'ilitl/;,~ lIlvllhf'd: JludtJating t'('unOlnic
<br />('<ll1diti"n~ an",.." tht- ha,~in, partll'ularly in Iht> enH~y
<br />fit'ld: and ill ,..ome in,..tan('\':-, the- rehui,-ely ..mall da-
<br />taha",,_ The \Iiddlt' \lI.~.~llun :,uhhasin had Iht' hidw,..l
<br />.l\l'ri'l2t' per-,.ilt' U'ilJ.:t' uf ~.t1t'r~'\ \\'a!('r in 19,,'\, .wd
<br />
|