                                                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 1986

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1        3.1         .9         .7        1.2        1.8        2.7        3.1        3.1        2.1        3.1         .1        1.2
    2        2.6         .9       50.1        1.2         .9        1.4        2.6        3.6        2.6        3.1         .1        1.4
    3        3.6         .9        1.2        2.8         .9         .9        3.6        3.1        2.6        3.1         .1        1.2
    4        3.6        1.4         .7        1.8         .7         .7        2.6        3.1        2.6        3.1         .0        1.2
    5        3.1        1.2         .7       19.6         .7         .9        3.6        3.1        2.6        4.1         .0        1.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   6         3.1        1.2         .7         .7         .7         .9       17.5        2.6        2.6        4.1         .0        1.2
   7         3.1        1.2         .7         .7         .7         .9       17.5        2.6        2.6        4.1         .0        1.2
   8        11.8        1.2         .5         .5       16.2      173.0        1.2        2.1        2.6        3.1         .1        1.8
   9        13.6         .9         .5         .7         .9        5.3         .9        2.1        3.1        3.1         .3        1.4
   10       13.6        3.4         .4         .7         .7      129.0         .7        2.1        3.1        3.6         .3        1.8

 ------------------------------------------------------------------------------------------------------------------------------------------
   11       12.7      151.0         .4         .7         .4        1.4         .9        2.1        3.1        2.6         .3        1.8
   12       11.8        1.8         .4         .9         .7       16.8        1.2        2.1        3.1        2.6         .2        1.4
   13       11.8         .7         .4         .7      109.0       76.8        1.2        2.1        3.1        2.1         .4        1.4
   14       10.9         .7         .4         .5      135.0        2.1         .5        2.1        3.1        2.1         .5        1.2
   15       10.0         .7         .4         .7      125.0       51.8         .1        2.1        3.1        2.1         .5        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   16       10.0         .7         .4         .9       50.5      161.0         .1        2.6        3.1        3.1         .5        1.2
   17       10.0         .7        2.8        1.1       36.3        1.8         .1        2.6        3.1        4.1         .5         .9
   18        9.1         .7         .4         .9        1.4         .9         .1        2.6        3.1        3.6         .5         .4
   19        9.1         .7         .5         .9       89.4         .9         .1        2.6        3.1        3.6         .5         .2
   20        9.1         .9         .5         .9        1.2         .7         .1        2.6        3.1        3.1         .7         .3

 ------------------------------------------------------------------------------------------------------------------------------------------
   21       55.4        1.4         .5        1.6         .7         .9         .2        2.1        3.1        3.6         .9         .3
   22        2.1        1.2         .9         .9         .5         .9        1.2        2.1        3.1        3.6         .9         .3
   23        1.4         .7         .7         .9         .5         .7        1.8        2.1        2.6       14.2        1.2       12.3
   24        1.4       58.5        1.2        1.2         .7         .7        1.4        2.1        2.6       10.9        1.2      189.0
   25        1.4      128.0        2.6        1.2         .7         .9        1.4        2.1        2.6       10.0         .9       37.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   26        1.4        2.3        1.8        1.2         .9         .9        1.4        2.1        2.6       11.2         .9        2.1
   27        1.4         .9        1.2        1.4         .9         .9        1.4        2.1        2.6        9.1         .9        2.6
   28        2.1         .7         .9        1.2         .9         .9        2.1        2.1        2.6        8.2         .9        2.1
   29        2.6      118.0        1.4       34.6         .0        1.2        2.6        2.1        2.1        6.4        1.2        2.1
   30        1.8         .9        1.2      211.0         .0         .9        3.1        2.1        2.6        2.6        1.2        2.1
   31         .9         .0        1.2       88.6         .0        2.6         .0        2.1         .0         .2        1.2         .0

 ==========================================================================================================================================
 TOTAL     259.3      484.1       76.2      381.6      589.2      641.4       60.5       74.1        84.0      142.5       17.0     273.6
 MEAN        8.4       16.1        2.5       12.3       21.0       20.7        2.0        2.4        2.8        4.6         .5        9.1
 MAX        55.4      151.0       50.1      211.0      135.0      173.0       17.5        3.6        3.1       14.2        1.2      189.0
 MIN          .9         .7         .4         .4         .4         .7         .1        2.1        2.1         .2         .0         .2

 ANNUAL DATA
 WTR YEAR 1986 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     6,116.0              3,083.5                          8.4                        211.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW    1,760.0      INST_MAXTIME  1330            INST_MAXDATE  03/08/86
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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