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<br />1768 <br /> <br />17. <br />. <br /> <br />Results ofWIIcoxO[l rank-sum test (I-tailed) ofpre-ll'e3tment (April 1990-March 1992) and post-treatment (April <br /> <br />1992-MllICh 1993) instantaneous streamfiow and manganese cO[lcentrations in the Arkansas River ...__..... <br /> <br />18. Number of samples that exceeded chromc manganese water-qua1ity standards ill the upper Arkansas River, <br /> <br />April 1990-MllICh 1993 ......................................................................................................_............................ <br /> <br />19. Average perce[ltage of seasot1al instantaneous stre:unflowand instantaneous total-recoverable zinc <br />. <br /> <br />load contributed to the downstr= main-stem site in a reach by the upstream main-stem site and <br /> <br />the intervening tributaries in the same reach. April I 990-March 1993............................................................ <br /> <br />20. Results of Wilcoxon rank-sum test (I-railed) of pre. treatment (April 1990-Man:h 1992) and post-treatment (April <br /> <br />1992-March 1993) instantaneous streamfiow and zinc conce[ltrations in the Arkansas River......................... <br /> <br />21. Number of samples that exceeded the acute and chromc zinc water-quality standards in the upper <br /> <br />Arkansas River, April I 990-March 1993.............._......................................................................................... <br /> <br />22. Number of samples that exceeded chromc cadmium water-quality standards in the lower Arkansas River, <br /> <br />. -------- --- <br />..- <br /> <br />April1990-March 1993 ................................................................................,..........................................._..... <br /> <br />.~. <br /> <br />Number of samples that exceeded chromc iro[I water-quality standards in the lower Arkansas River, <br />. . <br />.. <br /> <br />April 1990- March 1993 ..............................._....._........................................................:..................:.............. <br /> <br />24. . Number of samples that exceeded chromc manganese water-quality standards ill the lower Arkansas River, <br /> <br />April 1990-March 1993 ...............:......................_.............................................:.............................................. <br /> <br />25. Number of samples that exceeded chromc selemum warer-qua1ity standards in the lower Arkansas River, <br /> <br />April I 990-March 1993 ......................................_......................................................_.........................._...... <br /> <br />26. Coefficients of comelation for uranium and selected water-qua1ity constintiems ill the Arkansas River. <br /> <br />April 1990-March 1993 .................................................................................................................................... <br /> <br />27. Agricultural pesticide application ill the Arkansas River Basin ..,............................................................................ <br /> <br />28. SWl1IlllllY of detected pesticides for selected water-quality sites in the Arkansas River, April 1990-MllICh 1993. <br /> <br />29. Comparison of streamflow and suspended-sediment cO[lcenrrations and loads for two stonn events <br /> <br />at Catlill Dam, July 1991 and August 1992 ...................................................................................................... <br /> <br />.' <br /> <br />,. <br /> <br />VIII CONTEHTS <br />