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<br />-, <br />o <br /> <br />2 <br />SECCHI DISK, IN INCHES (LOG BASE 10) <br /> <br />3 <br /> <br /> <br />n :,::?~) U"} <br />::,: ; ,) J <br /> <br />u <br />12 <br />f- <br />W _ <br />::<,.0 <br />Ow~ <br />...d:::L.U 2 <br />wzen <br />J:::><( <br />D->lXl <br />Wf-<.'J <br />Z-O <br />zQ...J <br />-lXl- <br />'cr:- <br />~::>::> 0 <br />Cif-~ <br />1ii - <br />cr: <br />::> <br />f- <br /> <br />3 <br /> <br /> <br />"'-.-.!!!' <br />;::""'U,.<..~ <br />,2 <br /> <br />REGRESSION LINE <br />95 PERCENT CONFIDENCE INTERVAL <br />COEFFICIENT OF DETERMINATION <br /> <br />d <br /> <br />Turbidity= -1.29 (Secchi disk) +2.88 <br />r2 =0.98 <br /> <br />-, <br /> <br />3 <br /> <br /> <br />d <br /> <br /> <br />Suspended solids= -1.53 (Secchi disk) +3.27 <br />r2=0.86 <br /> <br />zcr: <br />-W <br />",1::: <br />Q...J- 2 <br />:Ja::~ <br />OWw <br />enD-en <br />o en<( , <br />w::<lXl <br />O<(<.'J <br />Zcr:O <br />w<.'J...J <br />0...-- 0 <br />en:J <br />Vl~ <br /> <br />d <br /> <br />d <br /> <br /> <br />d <br />d d <br /> <br />Figure ll.--Relation of turbidity and suspended-solids concentrations <br />to Secchi-disk measurements in Kenney Reservoir (sites 1 and 2), <br />water years 1985-87. <br /> <br />General Chemical Characteristics <br /> <br />The general chemical constituents in natural water are derived mainly <br />from the action of water on soils and rocks (Hem, 1985). Carbon dioxide, <br />derived from the atmosphere or from biological processes, readily dissolves in <br />water, which decreases pH and increases acidity. Chemical constituents in <br />soils and rocks are selectively dissolved into the water in various states of <br />oxidation and ionization. The chemical constituents commonly are grouped as <br />major constituents or ions, nutrients, and trace constituents. <br /> <br />23 <br />