WSP10284

• File Number: 8170
• Description: Arkansas Basin Water Quality Issues
• State: CO
• Basin: Arkansas
• Water Division: 2
• Date: 1/1/1998
• Author: USGS
• Title: Water-Quality Assessment of the Arkansas River Basin - Southeastern Colorado - 1990-93
• Water Supply Pro - Doc Type: Report/Study

02425

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Upper Arkansas River Basin

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o

Number or observallons
Outlier data value mora than 3 limes [he
inlerquaMlla range outside the quartile
Oullu~r dala value less IMn or eQual 10 3
and more than 1.51'm9li the
lTllllrqual'tile ral'lgEt outside the quartile
Dala value lass Than orequal to 1.5 timeslhe
in\erquartlla range outside the quartile
75th percenhle
Median

Lower Arkansas River Basin

(24) (24)
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(24)
(26)
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(23)
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(25)
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Figure 28. Variations of total-phosphorus concentrations in the Arkansas River, April 199[}-March 1993,

WATER QUALITY 57