                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                        F317-R       ARCADIA WASH BELOW GRAND AVENUE                               RATING NO.   57-I
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1987

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1        1.8        1.8        1.4        1.8        1.8        1.8         .4         .9         .9         .3         .2         .2
    2       64.1        1.8        1.2        1.8        2.6         .4         .4         .9         .9         .4         .1         .3
    3        3.1        1.1        1.2        1.8        2.1         .1        5.7         .9         .9         .3         .2         .3
    4        1.8         .2        1.4      172.0        2.6         .1         .4         .7         .9         .1         .1         .2
    5        1.4         .2        2.7       32.0        2.6       31.6         .4         .7         .7         .1         .3         .2

 ------------------------------------------------------------------------------------------------------------------------------------------
   6         2.1         .2       64.4       23.3        1.8       60.1         .5         .7       33.1         .2         .3         .2
   7         2.1         .2       64.4       23.3        1.8       60.1         .5         .7       33.1         .2         .3         .2
   8         2.6         .4        1.4        1.8        1.4         .5         .4        4.4         .9         .2         .3         .3
   9         2.1         .1        1.8        1.4       51.4         .4         .4         .7         .9         .3         .3         .7
   10        2.6         .2        1.4        1.2        3.8         .3         .4         .9         .9         .2         .3         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   11        2.1         .3        1.2        1.2        1.8         .4         .4         .9         .9         .2         .3         .3
   12        2.6         .2        1.2        1.4        1.8         .4         .4         .9         .9         .2         .3         .3
   13        1.8         .4        1.2        1.2       84.5         .4         .7         .9         .9         .2         .3         .2
   14        2.1         .4        1.2        1.2        3.1        4.5         .7         .9         .9         .2        2.4         .2
   15        2.1         .2        1.4        1.4        1.8       13.6         .5         .9         .9         .2         .3         .3

 ------------------------------------------------------------------------------------------------------------------------------------------
   16        2.6         .2         .9        1.4        1.8         .3         .7         .9         .9         .1         .2         .3
   17        2.1       41.4        1.2        1.8        1.4         .3         .5         .9         .9        8.4         .1         .3
   18        1.8       59.1        1.2        1.8        1.8         .2         .4         .9         .5         .2         .2         .2
   19        1.8        1.8        1.2        1.8        1.4         .2         .4         .9         .5         .2         .3         .3
   20        2.1        1.8         .9        1.8        1.4         .3         .5         .9         .4         .2         .3         .3

 ------------------------------------------------------------------------------------------------------------------------------------------
   21        1.8        1.4        1.2        2.1        2.4       31.2         .7         .9         .3         .2         .3         .2
   22        2.1        1.2        1.2        2.1       18.9         .5         .7         .9         .4         .3         .2         .4
   23        2.1        1.2        1.4        2.1        8.8         .4         .7         .9         .3         .3         .1        5.5
   24        2.1        1.2        1.4        1.8       82.4        4.5         .9         .9         .4         .3         .2         .5
   25        2.6        1.4        1.2        1.8       13.3         .3         .7        7.3         .4         .3         .1         .5

 ------------------------------------------------------------------------------------------------------------------------------------------
   26        2.1        1.2        1.4        2.1        2.1         .2         .7         .9         .3         .3         .1         .4
   27        2.1        1.2        1.4        2.1        1.8         .3         .9         .9         .4         .2         .2         .4
   28        3.6        1.2        1.4        1.8        1.8         .2         .9         .9         .3         .2         .3         .5
   29        3.6        1.2        1.8        1.8         .0         .2         .9         .9         .4         .3         .3         .5
   30        2.1        1.2        1.8        1.8         .0         .3         .9         .9         .4         .2         .3         .4
   31        2.1         .0        1.8        1.8         .0         .3         .0         .9         .0         .2         .3         .0

 ==========================================================================================================================================
 TOTAL     131.1      124.4      106.3      302.7      304.5      155.0       22.6       36.8        52.3       15.3        9.5      15.0
 MEAN        4.2        4.1        3.4        9.8       10.9        5.0         .8        1.2        1.7         .5         .3         .5
 MAX        64.1       59.1       64.4      172.0       84.5       60.1        5.7        7.3       33.1        8.4        2.4        5.5
 MIN         1.4         .1         .9        1.2        1.4         .1         .4         .7         .3         .1         .1         .2

 ANNUAL DATA
 WTR YEAR 1987 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     2,529.9              1,275.5                          3.5                        172.0                           .1

 INSTANTANEOUS DATA
 INST_MAXFLOW    2,410.0      INST_MAXTIME  1445            INST_MAXDATE  10/02/86
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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