                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                       F317-R       ARCADIA WASH BELOW GRAND AVENUE                               RATING NO.   57-01
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1983

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1         .9         .9        1.2         .5        1.2      455.0        2.6        3.3        4.1        2.1        1.8        1.8
    2         .7         .9        1.7         .5       59.3      390.0        3.1        3.6        2.1        1.8        1.4        1.8
    3         .9         .7         .7         .5        2.6       22.3        2.6        3.1        2.1        1.8        1.8        1.8
    4        1.2         .7         .9         .5        1.4       10.0        2.6        3.1        2.6        1.8        1.8        1.8
    5         .9         .7         .9         .5       17.0        8.2        3.1        3.1        2.1        1.8        1.8        1.8

 ------------------------------------------------------------------------------------------------------------------------------------------
   6          .9         .7         .7         .7        1.8        8.2        2.6        2.6        2.1        1.8        1.4        1.8
   7          .9         .7         .7         .7        1.8        8.2        2.6        2.6        2.1        1.8        1.4        1.8
   8          .9         .7         .7         .7       22.0        8.2        2.6        2.6        2.7        1.8        1.4        2.1
   9          .9      122.0         .7         .7        1.2        8.2        2.6        2.6        2.1        1.8        1.8        2.1
   10         .9       30.0         .7         .5        1.2       13.6        2.6        2.6        2.6        1.8        1.8        2.1

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .9         .9         .9         .4        1.2       13.6        2.6        2.6        3.1        1.4        1.8        2.6
   12        1.2         .9         .7         .4        1.2       13.6        2.1        2.6        2.1        1.8        1.8        2.1
   13        1.2         .7         .9         .4        3.5       13.6        2.1        2.6        2.1        1.8        1.4        2.1
   14        1.2         .7         .9         .4         .9       13.6        2.1        2.6        1.8        2.1        1.4        2.1
   15        1.2         .7         .7         .4         .7       15.4        2.1        2.6        1.8        1.8        2.1        2.1

 ------------------------------------------------------------------------------------------------------------------------------------------
   16        1.2         .7         .7         .5         .9       19.1        2.1        2.6        1.8        1.8        9.7        2.1
   17        1.2         .7         .7         .7         .9       43.0       16.9        2.6        1.8        1.8        2.1        2.6
   18        1.8       10.1         .7         .7         .9       56.3       77.1        2.6        1.8        1.8       41.5        2.6
   19        1.4       29.6         .7       69.7         .9       44.4        3.1        2.6        1.8        1.8       40.2        2.1
   20        1.8         .9         .7         .9         .9       41.7      133.0        2.7        1.8        1.8        2.1        2.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   21        1.2         .7         .9         .9        1.2       61.0       23.7        2.6        1.8        1.8        1.8        1.2
   22         .9         .9      133.0      107.0         .9       14.1        3.6        3.1        1.8        1.8        1.8        1.2
   23         .9         .7        1.8       55.1        7.7        4.1        3.1        2.6        1.8        1.8        1.8        1.2
   24         .9         .7         .9       73.3         .9       52.7        2.6        2.6        1.8        1.8        1.4         .9
   25         .9         .7         .7        1.4       52.2        4.1        2.6        2.6        2.1        1.8        1.4         .9

 ------------------------------------------------------------------------------------------------------------------------------------------
   26       11.0         .7         .7        1.2       94.3        3.1        2.6        2.1        2.7        1.8        1.4        1.2
   27         .9         .7         .7      200.0       35.6        5.5       31.4        2.1        2.6        1.4        1.4        1.2
   28         .9         .7         .7       55.2         .0       15.9       91.4        2.6        2.1        1.4        1.4        1.4
   29         .7       10.6        1.4       50.2         .0        4.1       25.6        2.6        2.1        1.8        1.8       27.4
   30        1.9      171.0         .7        1.8         .0        3.1       25.6        2.6        2.1        1.8        1.8       98.1
   31         .9         .0         .5        1.8         .0        3.1         .0        3.6         .0        1.8        1.8         .0

 ==========================================================================================================================================
 TOTAL      43.3      391.3      158.5      628.2      343.9    1,377.0      482.4       84.4        65.9       55.2      138.3     176.3
 MEAN        1.4       13.3        5.1       20.3       13.5       44.4       15.3        2.9        2.2        1.0        4.5        6.1
 MAX        11.0      171.0      133.0      200.0      128.0      455.0      133.0        3.6        4.1        2.1       41.5       78.1
 MIN          .7         .7         .5         .4         .7        3.1        2.1        2.1        1.8        1.4        1.4         .9

 ANNUAL DATA
 WTR YEAR 1983 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     7,824.2              3,944.7                         10.8                        455.0                           .4

 INSTANTANEOUS DATA
 INST_MAXFLOW    4,110.0      INST_MAXTIME  1215            INST_MAXDATE  03/01/83
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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