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Muldoon, Maureen A.; Madison, Frederick William, 1937-; Lowery, Birl / Variability of nitrate loading and determination of monitoring frequency for a shallow sandy aquifer, Arena, Wisconsin
[DNR-123] (1998)

Results and discussion,   pp. 9-20 PDF (3.1 MB)


Page 20


E    20             Nitrate-N (m g/l) -- - - - -- -- - - --_ - - - -    10   O
Z            .... .l .... Chloride (mg/l)
  ,                                                                          CD
  (1D
    10                                                                  0
        I
    0       I ,              I     I     I     I I l I II I lI I        0
          I                                     I         I
              8  - - - - - - - - - - - - - - - - r - - - J - - - - - - T - -"
    9t              shallow piezometer (2)       -- -- --"-  -- -- -
 ..------           deep piezometer (3) i .
 10                                           2                              _
 0                                                                  I        (0
     1 1            I    I -I -I                I          I - - -  I-L-
                                                   I                l l
        SI                                 I              I         I _
        I                                       I         I        -
     s               al        --ez-ete (---- -- - I -     -   -
        I------deeppezoeter---
    2   - - - - --"-  - - - -r - - - - - r- - - - - - - - - - - - - I -
  0
                             I        IIi                    t
                             I       r          I
      0                                                     1
      1/1/98    1/29198   2/26/98   3/26/98   4/23198  5/21/98   6/18/98
                                     Date
Figure 9. Water-quality, depth-to-groundwater, and precipitation data for 1998 (January 1 - June
18). Major ticks on the date axis are placed every ;8 days (4 weeks); minor ticks mark each
week.


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