Laserfiche WebLink
0129 <br />CONTENTS <br />Page <br />Abstract------------------------------------------------ - - - - -- 1 <br />Introduction-------------------------------------------- - - - - -- 2 <br />Purposeand scope--------------------------------------------- - - - - - 2 <br />Approach-------- - - - - -- --------------------------------------- - - - - -- 4 <br />Description of study area------------------ -- ----- ------- -- --- ---- - - - - --- 5 <br />Summary statistics-------------------------------------- - - - - -- 6 <br />Water - quality variations and trend analysis------------------------ - - - - -- 7 <br />Water - quality variations------------ -- -- ------- -------------- - - - - -- g <br />Water - quality trends------------------------------------------ - - - - -- 11 <br />Time - series trends-------------------------------------------- - - - - -- 13 <br />Summary----------------------------------------------- - - - - -- 16 <br />References cited------------------------------------------------- - - - - -- 19 <br />Hydrologicdata-------------------------------------- - - - - -- 21 <br />FIGURES <br />iii <br />Page <br />Figure 1. <br />Map <br />showing location of study area and water - quality <br />stations-------------------------------------- - - - - -- <br />3 <br />2 . <br />Example diagram of a box plot-------- -- --- ------- --- -- - --- <br />9 <br />3 -8. <br />Box <br />plots showing variations in: <br />3 . <br />Instantaneous streamflow------------------- ---- --- ----- <br />31 <br />4 . <br />Specific conductance------ ----- -- -- --- --- -- --- ------ <br />31 <br />6. <br />Water temperature-------------------------------- - - - - -- <br />32 <br />7. <br />Concentrations of dissolved oxygen---- -- ---- -- --- ------ <br />33 <br />8 . <br />Hardness as calcium carbonate----- ---- --- -- --- -- ----- <br />33 <br />9 -28. <br />Box <br />plots showing variations in concentrations of: <br />9. <br />Dissolved calcium------- -------------- - <br />34 <br />10. <br />Dissolved magnesium------- ------ --- ----- --------- - <br />34 <br />11. <br />Dissolved chloride-------- ------ --- -- --- --- ----------- <br />35 <br />12. <br />Dissolved sulfate-------- --- ---- ---- --- ----- ------ ---- <br />35 <br />13 . <br />Suspended solids-------- ---- --- ---- ----- -- ---------- <br />36 <br />14. <br />Nitrite plus nitrate as nitrogen-- --- ------- --- -- -- -- <br />36 <br />15. <br />Total ammonia as nitrogen------------- ---- --- --- -- ---- <br />37 <br />16. <br />Un- ionized ammonia as nitrogen--- ---- ---- ---- ------ - <br />37 <br />17. <br />Total ammonia plus organic nitrogen-------- --------- --- <br />38 <br />18. <br />Total organic nitrogen as nitrogen-- ---- ---- ------- -- <br />38 <br />19 . <br />Total phosphorus---------------------------- - - - - -- <br />39 <br />20. <br />Total recoverable copper--- ----- -- ----- ----- --------- <br />39 <br />21 . <br />Dissolved iron------------------------- - - - - -- <br />40 <br />22. <br />Total recoverable iron---- -- ----- ----- ---- ------------- <br />40 <br />23. <br />Total recoverable lead---------- -- ----- --- --- - <br />41 <br />24 . <br />Dissolved manganese------ --- ---- ----- -- ------ -------- <br />41 <br />25. <br />Total recoverable manganese---------- ---- ---- - - -- ------ <br />42 <br />26. <br />Total recoverable nickel----- --- ------ ----- ------------ <br />42 <br />27. <br />Total selenium------------------------- - - - - -- <br />43 <br />28 . <br />Total recoverable zinc--- ------- ----- ---- -- ------------ <br />43 <br />29. <br />Box <br />plot showing variations in 5 -day biochemical oxygen <br />demand---------------------------------------------- - - - - -- <br />44 <br />iii <br />