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<br />001956
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<br />During 1980, ground-water withdrawals were relatively low and surface water applications were relatively high;
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<br />~ffecting relatively low discharge and relatively high recharge. Water levels in the upland wells all experienced
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<br />peaks in their water levels in the spring of 1981; most likely as a result of the combined effect of relatively low
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<br />discharge and relatively high recharge. During 1981 relative conditions for recharge and discharge reverse, that is
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<br />recharge becomes relatively low and discharge becomes relatively high, and ground-water levels show a corre-
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<br />sponding decrease in the spring of 1982.
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<br />Other changes in hydrographs for the upland wells such as the prominent and relativJ'I.~ (teep and consistent
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<br />increases observed between 1979 and 1985, are more difficult to describe on the basis:.o(tI}e reco;'~'fC!.,::!irl50-
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<br />logic factors. In general, figure 7 indicates that, during this period, water lev~~s,~~\~[~) / /:.~,))( water in
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<br />surface-water conveyances was high, ground-water withdrawals were Io~,/~'(rs,ur.!'lice-iW:~~ " )ications were
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<br />high. These are conditions that intuitively lead one to predict ground-i:vIl.~~j~PeI~..~~Id.~h'fgh as a result of
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<br />increased recharge, due to conveyance losses from the Fort Lyon.C~aI and'!1lgh;rates6f surface-water applica-
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<br />.ns, that would essentially be increased due to decr~~~esf.vflS~d~~~.tejl(~~dt~~als. In {act, high water levels
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<br />were measured during this period (figs. 4 and 7); h~~\(~.e~,.lJie~~n~ng a'tid ending times for changes in each of
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<br />the hydrologic factors does not coincide w,itl1t~eb,;ginlirl},' g'~*d'el!.'l!.ihg of the effects. For instance, the hydrograph
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<br />for annual totals in the Fort Lyon CanJlri~ta;t~~hat:the amoin\'t of water in the canal is high during this period
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<br />however, the beginning of the high ~6~{~~iji~i~;~~recedes the beginning of the period of water-level
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<br />increases in the upland wells.;t.i~;W;is~vn)a~ol'c.'!ilj"ges in ground-water withdrawals and surface water-applica-
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<br />tions also precede the'be~ih~i~;rof th~';~d:'6f water-level increases in the upland wells. The inability of the
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<br />hydrologIC factorst,o c.Iearly\ex~aJlf,thp changes In water levels may be due to a combmatJon of factors, such as
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<br />the areal nature and ti;e,~~~f,;~:n~ records, particularly those records for ground-water withdrawals and
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<br />surface-water applications,...'
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<br />18
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