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<br />DRAFT Prellmmary Water Demand Forecasts
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<br />Table 2 indicates that Projected \1&1 demands for 2030 are projt'cted to incrL'ase in
<br />each of the t'ight major rin>r basins in Colorado, The Colorado and Dolores/San
<br />Jllan/}.ligul'1 Basins are projt'etl'd to have the grealt'st increase, whill' the :--':orth Platte
<br />and Rio GriHldt., will han' thl' least. Total 1\1&1 and Sl'If-sllpplit..>d water demand is
<br />projt:-'Cted to increase by over 700,000 acre-ft'et (AF) per year by tht' year 2030, \,.ith
<br />O\"l'r 575,000 AF of this dl>mand in the S..:lUth Plattt' and Arkansas Basins.
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<br />.' . . ." ..
<br /> Estimated Projected Increase in M&I
<br /> 2000 Sell- 2030 Seil- and Self.
<br /> Estimated Supplied Projected Supplied Supplied
<br /> 2000 M&I Industrial 2030 M&I Industrial Industrial
<br /> Demand Demand Demand Demand Demand
<br />Basin (AF) (AF) (AF) (AF) (AF)
<br />
<br />Arkansas 203.000 58.000 311.000 58.000 108.000
<br />Colorado 72.000 57.000 143.000 62.000 75.000
<br />DoloresiSan Juan! 26.000 11.000 48.000 11.(XXl 22.000
<br />San MIQuel
<br />Gunnison 22.000 430 40.000 670 18.000
<br />North Platte 440 550 110
<br />Rio Grande 17,000 - 23.000 - 5.700
<br />South Platte 691,000 92.000 1.150.000 103,000 469.000
<br />Yamoa"NhiteiGreen 15,000 14.000 24.000 14,000 9.800
<br />Tolal 1,050.000 233.000 1.740.000 250.000 708,000
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<br />'Water demands are gross diversions and not consumptive use.
<br />Source: SWSI Preliminary Demand Forecast
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<br />Agricultural Demands
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<br />\Vatl'r demands for dgricultural purpt.1se... Wl'rl' dl'terminl'd for cllrrt'nl conditions
<br />u...ing l'stimatl's of erllp irrig,Hion w,llt:'r requirement... (irrig,lted aerl'age. cropping
<br />Prlltt'fIlS, and climatic data), hi...torie water applic,ltion alllllunh (~lIffiI(L' diH'rsions
<br />and groundwater pumping), ,md crop eon<;;lllllpti\'l' lISl'.
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<br />Existing d,lla sets and models from thL' CDSS Me <1"ailabIL' for Ihl' Color,ldo,
<br />Gunnison, Yampd/\\'hile/Grl'l'll, Dolores/San Juan/San \.tigm>1, and Rio Gr,lndl'
<br />8a...in-", Crop irri~ati(ln Wdtt'r rl'quirl'l11l'nh \\'I;:'r", l'~til1lall'(i for thl""'" pdfticular brl...ins
<br />lI-"ing Ihl' irrigatl'd <1Cfeagl' and crop typl'S \,"ith thl' clim,lte d,lla <lnll appropriillL"
<br />wdiL'r balilllcl' 1ll01.:iels \,'ithill Iht' SlatL.>CU modl'1. Usin~ CDSS tLXlb, the crop
<br />rL>quiremenh at diH'rsioll ...trllcture... WL'rl' ...ulllllled to calculate a t(ltal ,lnnu,ll
<br />irrigdti()Jl wdtt'r rl'quirenll'nt by bd...in or regillll. T(\tal ewp c(ln~lImptiH' liSt.' ()Jl an
<br />illlllthll basis by bilsin was dl'IL'rmilll'l..i by Slimming a supply limitt.>d emp
<br />((l\lsUlnptiH' US(' amount ba...l,d Up,)Jl historic dher...j,lll:- and ...(lil moi...ture carr\'OH'r
<br />at each d]\vr...i(ln ...trllchlrt'.
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<br />:\ different dppro,lCh i~ reqlliH'd fnr the nOll-CUSS :'\:orth PI,Htl', Sl.1uth PI,lttl', and
<br />:\rl-;illlsa... Ba...ins tlll'slim,ltl' cwp irrigation \,'att'r rl'quirt'lllents" Exbting SlHlrel'... ,md
<br />...tuJit'~ ha\"l' bl't'll USt,J tll compill' injonn<1tion on irrig,lt,'d <lCrl'agl' ,lI1d cmpping
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