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<br />1101 <br /> <br />Table 4. - Significant long-term trends in concentration (mg/(L .a)) by linear regression. Associated trends (kg/(s'a)) for <br />solute loads are in parentheses <br /> <br />PERIOD <br /> <br />SEASON <br /> <br />--------~------------------------------------------------------------------------------------------------------------------------- <br /> <br />SUM OF SIX IONS <br /> <br />CALCIUM <br /> <br />MAGNESIUM <br /> <br />SODIUM <br /> <br />CHLORIDE <br /> <br />SULFATE <br /> <br />BICARBONATE <br /> <br />------------------------------------------------------------------------------------------~--------------------------------------- <br /> <br />STATION 9095500 <br />1933-45 DEe-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />STATtON 9152500 <br />1931-64 DEe-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />STATION 9180000 <br />1951-82 DEe-MAR <br />MAY-JUNE <br />AUG-NOV <br />STATION 9180500 <br /> <br />~ <br />'" <br /> <br />1928-46 DEC-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />UPPER COLORADO BASIN <br /> <br />COLORADO RIVER NEAR CAMEO, co. <br /> <br />--4.01(-1.342) <br /> <br />GUNNISON RIVER NEAR GRAND JUNeT <br /> <br />.96( -.02S) <br /> <br />.46( -.012) <br />.S3C - .024) <br /> <br />- 1 .26 ( -.(33) <br />-.,82( -.163) <br />-2.57C -.076) <br /> <br />-.2SC -.0(7) <br /> <br />- .44( - .013) <br /> <br />-4.13( -.108) <br /> <br />-7.S3( -.240) <br /> <br />-5.64( -.173) <br />-12.15( -.361) <br /> <br />DOLORES RIVER NEAR CISCO, UT <br /> 4.49t .028) <br /> .54t .041 ) 7 .67( .458) 10.97( .655) 4.55( .272) 24.54( 1. 465) <br /> 8 .49{ .(46) 14.93C .081 ) -5.5S( -.030) 3.89( .02t) 21.01( .113) <br />COLORADO RIVER NEAR CISCO UTAH <br />,65C -.0481 - .43( -.032 ) 1.99t .147) -5.62( - .489) .76( - .056) -7.19C -.5~'2) <br /> -,23( -.147) -.73t -.459) -.55{ -.349) -2.90(-1.816) <br /> - .50( -.051) -2.29( -,232) -5.80( -.584) -9.65( -.971) <br /> GREEN BASIN <br /> <br />STATION 9217000 - GREEN R. NR GREEN RIVER, WYO. <br /> <br />-.78( -.013) <br />-.58{ -.069) <br />-.69~ -.0171 <br /> <br />1951-62 DEC-MAR -1.20C -.0191 <br />MAY-JUNE <br />AUG-NOV -1.90( -.045) <br /> <br />STATION 9251000 <br /> <br />1950-82 DEC-MAR <br />MAY-JUNE <br />AUG-NOV <br />STATION 9306500 <br />1950-79 DEe-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />STATION 9315000 <br />1928-61 DEC-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />STATION 9328500 <br /> <br />1947-65 DEC-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />-.81C -,019) <br /> <br />YAMPA RIVER NEAR MAYBElL, co. <br /> <br />.291 <br />.11( <br />.10( <br /> <br />.28( <br /> <br />- . 28 ( -.0(3) <br />-.481 -.(04) <br /> <br />.0031 <br />.018) <br />.001 ) <br /> <br />,0(3) <br /> <br />WHITE RIVER NEAR WATSON, UT <br />-.36( -.004) <br />-.2S( -.011) <br />- .43t -.005) <br /> <br />-1.301 -.015) <br />-1. 14( -.013) <br /> <br />-1.74~ -.020) <br />- .42( -.018) <br />-1.81( -.020) <br /> <br /> GREEN RIVER AT GREEN RIVER, UTA <br /> -.43{ -.029) <br /> -.08( -.037) <br /> - .41 ( -.(29) <br /> SAN RAFAEL RIVER NEAR GREEN .,V <br />-, .84 ( - 003) -, .36( - .002) <br /> -10. 5" -.022\ <br /> <br />-4.57{ -.(78) <br />-S.24( -.123) <br /> <br />2.26( <br />.73( <br />.84( <br /> <br />.022 ) <br />.115) <br />.007) <br /> <br />-1.38C -.015) <br /> <br />-1.06( -.012) <br /> <br />-29931 -.(63) <br /> <br />-2.23( -.037) <br />-2.41C -.057) <br /> <br />.36( .024) <br /> <br />-2.49( -.004) <br /> <br />-10.4&( -.174) <br />-11.18( -.263) <br /> <br />2.48( <br /> <br />.024 ) <br /> <br />-4.83( -.056) <br /> <br />-4.25( -.048) <br /> <br />-38.07( - .0SOI <br /> <br />