                                                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 1981

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1        1.2         .9         .9         .7         .4      104.0         .4        1.2         .9        1.4        1.2        1.8
    2        1.2         .9         .9         .7         .9       50.5        8.1        1.2        1.2        1.4        1.2        1.8
    3        1.2         .9        1.2         .7         .4         .9         .7        1.2        1.2        1.4        1.2        1.8
    4         .9         .9       36.5         .9         .4        1.6         .5        1.2        1.2        1.2        1.2        1.8
    5         .9        1.2        2.6         .9         .5       44.8         .7        1.2         .9        1.4        1.2        1.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   6          .9         .9        1.8         .7         .4        1.2         .7        1.2         .9        1.4        1.2        1.2
   7          .9         .9        1.8         .7         .4        1.2         .7        1.2         .9        1.4        1.2        1.2
   8          .9        1.2        1.4         .5       17.9         .5         .5        1.2         .9        1.4        1.2        1.2
   9          .9        1.2        1.2         .7       24.0         .5         .5        1.2         .9        1.4        1.2        1.4
   10         .9        1.2         .9         .5         .4         .5         .5        1.2         .9        1.4        1.2        1.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .9        1.2         .9        5.0         .4         .5         .5        1.2         .9        1.2        1.2        1.4
   12         .9        1.2         .9        1.9         .4         .5         .5        1.2         .9        1.2        1.2        1.2
   13         .9        1.2         .7         .7         .4         .5         .5        1.2         .9        1.2        1.2        1.4
   14        2.7        1.2         .7         .7         .4         .7         .5         .9         .9        1.2        1.2        1.4
   15         .7        1.2         .7         .7         .4         .5         .5        1.2        1.2        1.2        1.2        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .7        1.2         .5         .7         .4         .7         .5        1.2        1.2        1.2        1.2        1.2
   17         .7         .9         .5         .7         .4         .7         .5         .9        1.2        1.2        1.2        1.2
   18         .7        1.2         .5        1.8         .4         .5       27.9         .9        1.2        1.2        1.4        1.2
   19         .7         .9         .5         .7         .4       88.3        7.3         .9        1.4        1.2        1.4        1.2
   20         .9         .9         .7         .7         .5        3.1        1.2         .9        1.4        1.2        1.2        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   21         .7         .9         .5         .7         .4         .7         .9         .9        1.2        1.2        1.2        1.4
   22         .7         .9         .5         .7         .4         .7         .9        1.2        1.2        1.4        1.4        1.8
   23         .7         .9         .7       27.5         .4         .7         .9         .9        1.2        1.4        1.2        1.8
   24         .9         .9         .7         .5         .4         .5        1.2        1.2        1.2        1.2        1.4        1.8
   25         .9         .9         .5         .5       29.2         .9        1.2        1.2        1.2        1.2        1.8        1.8

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .9         .9         .5         .4        2.6        3.5        1.2        1.2        1.2        1.2        1.8        1.8
   27         .9         .9         .5         .4         .7         .5        1.2        1.2        1.2        1.2        2.1        1.4
   28         .7         .9         .5       60.8       22.1         .4        1.2        1.2        1.2        1.2        2.1        1.8
   29         .7         .9         .7       86.2         .0         .5        1.2        1.2        1.4         .9        1.8        3.1
   30         .9        1.2         .7         .9         .0         .5        1.2        1.2        1.4        1.2        1.4        7.7
   31         .9         .0         .5         .5         .0         .4         .0         .9         .0        1.2        1.8         .0

 ==========================================================================================================================================
 TOTAL      28.9       30.6       62.2      199.5      106.0      310.5       64.7       34.8        33.3       39.1       42.4      52.0
 MEAN         .9        1.0        2.0        6.4        3.8       10.0        2.2        1.1        1.1        1.3        1.4        1.7
 MAX         2.7        1.2       36.5       86.2       29.2      104.0       27.9        1.2        1.4        1.4        2.1        7.7
 MIN          .7         .9         .5         .4         .4         .4         .5         .9         .7         .9        1.2        1.2

 ANNUAL DATA
 WTR YEAR 1981 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     1,991.4              1,004.0                          2.8                        104.0                           .4

 INSTANTANEOUS DATA
 INST_MAXFLOW    1,050.0      INST_MAXTIME  1212            INST_MAXDATE  01/29/81
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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