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<br />9rOT <br /> <br />Table 6. - Significant long-term trends in concentration (mg/(L'a)) by semilog regression. Associated trends (kg/(s'a)) <br />for solute loads are in parentheses - Continued <br /> <br />--.--------------_.---------------.-----_.-----------.------------.-.---------.. -------------------------------------------------- <br /> <br />PERIOD <br /> <br />SEASON <br /> <br />CAlC I UM <br /> <br />MAGNESIUM <br /> <br />SODIUM <br /> <br />CHLORIDE <br /> <br />SULFATE <br /> <br />BICARBONATE <br /> <br />SUM OF SIX IONS <br /> <br />--.------._-----._---._-_.---------------.------...---------------------------------------------------------------------_.-._------ <br /> <br />SAN JUAN BASIN <br /> <br />'" <br />w <br /> <br />STATtON 9379500 <br />1929-61 DEe-MAR <br />MAY-JUNE <br />AUG-NDV <br /> <br />SAN JUAN RIVER NEAR BLUFF, UTAH <br /> <br />.oel <br />.OBI <br /> <br />.002) <br />.014 ) <br /> <br />.33( <br />.06j <br />.231 <br /> <br />.010) <br />.0 II) <br />.009 ) <br /> <br />- I .43 ( -.058) <br /> <br />-.57( -. f03) <br /> <br />-1.2S( -.233) <br /> <br />-.3S( -.016) <br /> <br />LOWER COLORADO BAStN <br /> <br />STATION 9380000 - COLORADO R AT lEES FERRV, AZ. <br /> <br />1927-61 DEe-MAR <br />MAY-JUNE <br />AUG-NOV <br /> <br />.21( <br />.S'2( <br />,87( <br /> <br />,039) <br />.6S0} <br />.208) <br /> <br />-.3a( -.072) <br />-,29! -,070) <br /> <br />,47( -,090) <br />,6f( .,146) <br /> <br />-1.96( -,375) <br /> <br />1.15! <br />1.27l <br /> <br />.511) <br />.304 ) <br /> <br />-2.1s( -.4t4) <br /> <br />STATION 9402500. COLORADO R. NEAR GRANO CANYON, <br /> <br />1925-61 DEe-MAR <br />MAY-JUNE <br />AUG'NOV <br /> <br />.49{ .656) <br /> <br />-.13 ( -.0261 <br />-.10( -,026) <br /> <br />-,32( ,0651 <br />- .581 -.1511 <br /> <br />-1.13( -.'233) <br />-1.51( -.403) <br /> <br />.33t .067) <br />1.60l 2.124) <br />.91 ( .239) <br /> <br />-LI7( -.241) <br />2,00( 2.650) <br /> <br />