                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                     F81D-R       ALHAMBRA WASH NEAR KLINGERMAN STREET                               RATING NO.   43-01
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1990

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1        1.3        1.2        1.0        1.1        2.6        1.2        1.1        2.3        1.0        1.0        1.2        1.4
    2        1.3        1.0        1.0       33.9         .9        1.1        1.2        1.6        1.1         .9        1.2        1.4
    3        1.4        1.1        1.1        1.1        1.0        1.2        1.2        1.3        1.3        1.0        1.3        1.3
    4        1.3        1.1        1.4        1.1       62.6        1.3       28.5        1.1        1.1        1.1        1.4        1.3
    5        1.3        1.1        1.1        1.1        1.1        1.2        1.6        1.1        1.1        1.2        1.5        1.5

 ------------------------------------------------------------------------------------------------------------------------------------------
   6         1.4        1.4        1.1         .9        1.1        1.1        1.2        1.1         .9        1.3        2.8        1.7
   7         1.4        1.4        1.1         .9        1.1        1.1        1.2        1.1         .9        1.3        2.8        1.7
   8         1.4        1.3        1.2        1.2        1.0        1.2        1.1        1.1        1.3        1.1        1.2        1.4
   9         1.6        1.3        1.2        1.2         .9        1.2        1.1        1.3        1.5        1.0        1.3        1.4
   10        1.4        1.3        1.3        1.2        1.0        1.6        1.1        1.1        1.4         .9        1.3        1.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   11        1.4        1.2        1.2        1.2        1.0       12.9        1.2        1.1        1.2        1.0        1.3        1.4
   12        1.3        1.2        1.2        6.7        1.1       12.3        1.3        1.1        1.0        1.3        1.3        1.4
   13        1.3        1.2        1.2      159.0        7.3        1.2        1.3        1.1         .9        1.5        1.3        1.5
   14        1.6        1.2        1.3       25.5        2.4        1.1        1.2        1.3        1.0        1.5        1.3        1.4
   15        1.4        1.3        1.2       15.0         .9        1.1        1.1        1.1        1.1        1.6        2.0        1.4

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   16        2.8        1.2        1.2       82.5       29.9        1.1       25.4        1.1        1.2        1.5        1.3        1.4
   17        1.4        1.1        1.2        8.1      530.0        1.2        4.4        1.1        1.3        1.5        1.3        1.5
   18        1.4        1.2        1.2        1.1       25.5        1.0        1.3        1.1        1.5        1.4        1.3        1.4
   19        1.4        1.1        1.3        1.0        1.5        1.1        1.1        1.3        1.5        1.4        1.4        1.5
   20        1.4        1.1        1.2         .9        1.2        1.1        1.1        1.1        1.3        1.5        1.4        1.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   21        3.2        1.2        1.2        1.1        1.1        1.2        1.2        1.1        1.2        1.4        1.6        1.5
   22        9.1        1.2        1.1        1.0        1.1        1.1        1.1        1.1        1.1        1.4        1.6        1.4
   23        1.6        1.4        1.2        1.1        1.1        1.2       19.8        1.1        1.0        1.4        1.7        1.2
   24        1.3        1.4        1.2        1.1        1.1        1.1        1.3        1.3         .9        1.4        1.6        1.3
   25        4.6        1.4        1.2        1.1        1.1        1.2        1.1        1.1        1.0        1.4        1.5        1.3

 ------------------------------------------------------------------------------------------------------------------------------------------
   26        1.1       40.6        1.2        1.1        1.1        1.1        1.2        1.1        1.1        1.5        1.4        1.2
   27        1.0        1.4        1.3        1.1        1.1        1.2        1.3        1.1        1.2        1.3        1.5        1.2
   28         .9        1.1        1.3        1.1        1.2        1.1        1.2      146.0        1.3        1.3        1.5        1.2
   29         .9        1.0        1.2        1.1         .0        2.0        1.3        1.3        1.2        1.3        1.6        1.5
   30         .9        1.1        1.1       26.2         .0        1.1       13.6        1.1        1.1        1.2        1.4        1.2
   31        1.0         .0        1.2        1.6         .0        1.1         .0        1.1         .0        1.2        1.5         .0

 ==========================================================================================================================================
 TOTAL      54.7       75.8       36.9      382.4      683.0       59.7      121.7      181.9        35.0       39.7       45.7      41.5
 MEAN        1.8        2.5        1.2       12.3       24.4        1.9        4.1        5.9        1.2        1.3        1.5        1.4
 MAX         9.1       40.6        1.4      159.0      530.0       12.9       28.5      146.0        1.5        1.6        2.8        1.7
 MIN          .9        1.0        1.0         .9         .9        1.0        1.1        1.1         .9         .9        1.2        1.2

 ANNUAL DATA
 WTR YEAR 1990 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     3,485.0              1,757.0                          4.8                        530.0                           .9

 INSTANTANEOUS DATA
 INST_MAXFLOW    2,010.0      INST_MAXTIME  1245            INST_MAXDATE  02/17/90
 INST_MINFLOW         .3      INST_MINTIME  0815            INST_MINDATE  10/27/89

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