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<br /> 211' ~ <br /> '"1 J. t.: <br /> Table 5. Monotonic trends in seasonal dissolved-solids loads (Augustlhrough October and November through February) <br /> for gaging stations 09095500 Colorado River near Cameo, 09152500 Gunnison River near Grand Junction, and 09163500 <br /> Colorado River near the Colorado-Utah State line, water years 1970-93 <br /> {Trend teSlS done 01"1 the ~l.lm or lhe monthly dissolved-solids loads it\ each seasonal period; penods are in water years~ slopes are in tons per season per <br /> year; percenl is the slope e:-.:pressed as percent change per year; p value is the significance level of the lest; SL. significance levels, which are defined as: <br /> HS is highly significant. p is less than or equal 10 0.01; S is significant. p is greater than 0.01 and less than or equal 10 0.05; MS is marginally significant, <br /> pis gn=aler th,m 0.05 and less than or equal to 0.10; and NS is not significant, p is grealer than 0.10; <. less than] <br /> Station Period Unadjusted seasonal load Flow-adjusted seasonBlload <br /> Slope Percent p value SL Slope Percent p value SL <br /> August through October <br /> 09095500 1970-93 -1.260 -0.37 0.471 NS ...{j57 -0.19 0.252 NS <br /> t980-93 -5.530 -1.61 .280 NS -524 -.15 .767 NS <br /> 1986-93 -17,900 -5.61 .061 MS -8.560 -2.68 .005 HS <br /> 09152500 t970-93 -t,240 -.38 .527 NS -2.160 -.67 .010 HS <br />~ ]980-93 -187 -.06 .966 NS 2,100 .65 .090 MS <br /> 1986-93 -9.590 -3.03 .356 NS -1.450 -.46 .544 NS <br />~ 09163500 t970-93 1.230 .16 .778 NS -749 -.10 .584 NS <br /> 1980-93 -17,500 -2.14 .097 MS -4.310 -.53 .239 NS <br /> 1986-93 -44,900 -5.93 .053 MS -13,900 -1.83 .128 NS <br />I.. November through February <br />I 09095500 ]970-93 -1.590 -.41 .284 NS 23t .06 .652 NS <br /> t980-93 -4,030 -1.05 .335 NS 187 .06 .879 NS <br /> 1986-93 -24, tOO ...{j.3t .006 HS -jj.550 -1.72 <.001 HS <br /> 09 t 52500 ]970-93 -3.780 -1.07 .022 S -1,tOO -.31 .202 NS <br /> ]980-93 -5,210 -1.53 .179 NS 1.530 .45 .880 NS <br /> 1986-93 -16.200 -4.97 .103 NS -388 -.12 .221 NS <br /> 091635()() 1970-93 -9.660 -1.02 .011 S -4.460 -.47 .027 S <br /> 1980-93 -]0.200 -1.12 .259 NS 5.160 .57 .214 NS <br /> ]986-93 -56,200 ...{j.23 .010 S -13,200 -1.47 .112 NS <br /> <br />Table 6. Monotonic trends in the annual Grand Valley dissolved-solids load, water years 1970-93 <br /> <br />[P~riods are in water years: slopes are in Ions per y~ar; percenl is (he slope expressed as perc~nt change per year; p value iSlhe signilkance level of the <br />trend lest; SL. significance levels, which are: HS is highly significant. p is less than orequallo 0.01; S is significant, p is greater lhan 0.01 and less than or <br />equal 10 0.05; MS is marginally significant. p is grealer than 0.05 and less lhan or equal 10 0.10: and NS is not signific<lnl. p is greDler lhan O. I 0) <br /> <br />Period Slope Percent p value SL <br />1970-93 ...{j,730 -1.27 0.168 NS <br />]980-93 -17.000 -3.22 .031 S <br />1986-93 -28,700 ...{j.t4 .104 NS <br /> <br />TREND ANALYSIS FOR THE COLDRADO AND GUNNISON RIVERS 23 <br />