                                                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 1980

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1         .9         .3         .4         .7         .7        4.5        2.1        4.1        1.2         .9         .9         .9
    2         .7         .4         .4         .7         .9      114.0        2.1        3.1        1.4         .9         .9         .9
    3         .7         .4         .4         .5         .9       47.1        2.1        2.1         .9         .9         .9         .9
    4         .7         .4         .4         .5        1.2       18.1        1.8        1.2         .9         .9         .9         .9
    5         .7         .4         .4         .5        1.4       86.8        1.8         .3         .9         .9        1.2         .9

 ------------------------------------------------------------------------------------------------------------------------------------------
   6          .7         .4         .4         .5        1.4       71.1        1.8         .1         .9         .9        1.8         .9
   7          .7         .4         .4         .5        1.4       71.1        1.8         .1         .9         .9        1.8         .9
   8          .7        1.0         .5        1.2        1.8        4.5        1.4         .1         .9         .9         .9         .9
   9          .7         .5         .5      137.0        1.8        4.1        1.8         .0         .9         .7         .9         .9
   10         .7         .5         .5      101.0        1.8        4.1        1.4       13.2         .9         .9         .7        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .5         .5         .5       64.1        1.8        4.1        1.4        3.6         .9         .9         .7        1.2
   12         .5         .7         .5       30.5        1.8        4.1        1.8        2.6         .9         .9        1.2        1.2
   13         .5         .7        1.1       41.9      136.8        3.1        1.4        1.2         .9         .9        1.2        1.2
   14         .7         .7         .7       14.4      219.0        2.4        1.4        1.2         .9         .9         .9        1.2
   15         .5         .5         .7         .7      334.0        2.1        1.4        1.2         .9         .9         .9        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .4         .5         .7        1.2      633.0        2.6        1.4        1.2         .9         .9         .9        1.2
   17         .5         .5         .7       11.3       96.2        1.4        1.4        1.2         .9         .9         .9        1.2
   18         .4         .5         .7        4.0      107.0       11.5        1.4        1.2         .9         .9         .9        1.2
   19        5.3         .5         .7         .9      125.0       12.7        1.4        1.2        1.2         .9         .9        1.2
   20       57.1         .4         .7         .5       73.0       10.0        1.4        1.2        1.2         .9         .9        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   21         .7         .4        3.9         .5       57.0        4.0        2.1        2.1         .9         .9         .9        1.2
   22         .5         .5         .9         .4       10.9        1.4        5.7         .9         .9         .9         .9        1.2
   23         .5         .5         .7         .4        8.2         .9        2.1        2.2         .9         .9         .9        1.2
   24         .5         .5       21.4         .5        7.3         .5        1.4         .9         .9         .9         .9        1.2
   25         .5         .5        7.1         .5        5.5       14.0        1.4         .9         .9         .9         .9        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .5         .5         .7         .4        6.4       10.3        1.4         .9         .9         .9         .9        1.2
   27         .5         .4         .7        1.4        6.4        2.6         .7        1.2         .9         .9         .9        1.2
   28         .4         .4         .5      236.0        4.6        2.6       10.8        1.2         .9         .9         .9        1.2
   29         .4         .3         .5      183.0        4.6        2.1        5.5        1.2         .9         .9         .9        1.2
   30         .4         .4         .7        3.1         .0        2.1        7.3        1.2         .9         .9         .9        1.2
   31         .3         .0         .5         .9         .0        2.1         .0        1.2         .0         .9         .9         .0

 ==========================================================================================================================================
 TOTAL      78.8       17.7       48.9      846.6    1,852.2      455.5       70.5       53.9        28.4       27.7       29.6      33.3
 MEAN        2.5         .6        1.6       27.3       63.8       14.7        2.3        1.7         .9         .9        1.0        1.1
 MAX        57.1        3.5       21.4      236.0      633.0      114.0       10.8       13.2        1.4         .9        1.8        1.2
 MIN          .3         .3         .4         .4         .7         .5         .7         .0         .9         .7         .7         .9

 ANNUAL DATA
 WTR YEAR 1980 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     7,027.8              3,543.2                          9.7                        633.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW    3,280.0      INST_MAXTIME  0013            INST_MAXDATE  01/29/80
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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