                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                   F312-R       SAN JOSE CHANNEL ABOVE WORKMAN MILL ROAD                               RATING NO.   7801
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1983

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1       13.4       14.2       15.0       22.2       22.2    2,720.0       36.8       52.2       24.6       27.0       24.6       17.4
    2       13.4       13.4       12.6       18.6      240.0    1,720.0       36.8       35.4       24.6       28.4       22.2       17.4
    3       13.4       12.6       12.6       15.0       40.1      331.0       35.4       34.0       25.8       27.0       24.6       17.4
    4       13.4       12.6       13.4       15.0       23.4       90.7       34.0       34.0       25.8       31.2       23.4       16.2
    5       13.4       14.2       14.2       13.4       62.7       76.0       34.0       35.4       25.8       31.2       22.2       16.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   6        13.4       15.0       14.2       31.5       27.0       70.4       32.6       36.8       25.8       29.8       23.4       16.2
   7        13.4       15.0       14.2       31.5       27.0       70.4       32.6       36.8       25.8       29.8       23.4       16.2
   8        15.0       19.1       11.8       57.0      309.0       47.4       29.8       39.6       27.0       28.4       23.4       16.2
   9        15.0      242.0       11.8       57.0       22.2       45.8       28.4       39.6       25.8       28.4       30.5       15.0
   10       14.2      145.0       12.6       57.0       19.8       39.6       28.4       36.8       25.8       27.0       23.4       15.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   11       15.0       31.2       12.6       55.4       21.0       36.8       28.4       35.4       27.0       25.8       24.6       15.0
   12       14.2       23.4       12.6       55.4       21.0       38.2       35.6       38.2       25.8       23.4       23.4       15.0
   13       14.2       17.4       13.4       57.0       22.2       61.4       25.8       38.2       23.4       23.4       24.6       15.0
   14       12.6       19.8       13.4       64.6       21.0       60.8       23.4       39.6       22.2       24.6       25.8       15.0
   15       12.6       17.4       14.2       76.0       79.6       36.8       24.6       39.6       19.8       23.4       45.6       15.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   16       12.6       18.6       14.2       74.1       60.1       45.3       23.4       38.2       21.0       23.4      244.0       16.2
   17       16.2       18.6       14.2       74.1       15.0       84.4       38.7       36.8       21.0       23.4       69.9       16.2
   18       14.2       29.4       14.2       66.5       15.0      105.0      132.0       35.4       21.0       22.2       27.0       16.2
   19       15.0       89.5       13.4       95.4       15.0       41.4       24.6       35.4       21.0       22.2       24.6       16.2
   20       13.4       22.2       14.2       13.4       15.0       38.2      254.0       34.0       22.2       22.2       18.6       16.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   21       14.2       19.8       14.2       13.4       15.0      202.0      104.0       36.8       21.0       22.2       18.6       16.2
   22       15.0       17.4      682.0      334.0       15.0       76.7       27.0       34.0       22.2       22.2       17.4       16.2
   23       14.2       18.6       37.8      478.0       16.2       61.8       24.6       32.6       22.2       22.2       17.4       16.2
   24       15.0       13.4       23.4      380.0       59.3      565.0       23.4       29.8       22.2       22.2       17.4       16.2
   25       15.0       11.8       23.4       27.0       19.8       44.2       24.6       25.8       22.2       22.2       17.4       16.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   26       58.2       11.8       23.4       21.0      548.0       38.2       24.6       23.4       22.2       21.0       17.4       16.2
   27       17.4       12.6       23.4      586.0    2,090.0       36.8       23.4       25.8       22.2       23.4       17.4       16.2
   28       14.2       11.8       23.4      135.0      139.0       55.1       36.8       28.4       22.2       21.0       17.4       17.4
   29       14.2       37.7       22.2      415.0         .0       35.4      392.0       31.2       24.6       23.4       17.4       24.3
   30       19.8    1,260.0       21.0       25.8         .0       35.4       61.4       29.8       28.4       23.4       17.4      132.0
   31       13.4         .0       19.8       23.4         .0       32.6         .0       29.8         .0       24.6       17.4         .0

 ==========================================================================================================================================
 TOTAL     488.6    2,204.7    1,181.2    3,414.2    4,005.4    6,921.4    1,679.7    1,078.8       709.4      768.6      963.0     606.3
 MEAN       15.8       73.5       38.1      110.0      143.0      223.0       56.0       34.8       23.6       24.8       31.1       20.2
 MAX        58.5    1,260.0      682.0      586.0    2,090.0    2,720.0      392.0       52.2       28.4       31.2      244.0      132.0
 MIN        12.6       11.8       11.8       13.4       15.0       32.6       23.4       23.4       19.4       21.0       17.4       15.0

 ANNUAL DATA
 WTR YEAR 1983 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    47,646.1             24,021.6                         65.8                      2,720.0                         11.8

 INSTANTANEOUS DATA
 INST_MAXFLOW   19,200.0      INST_MAXTIME  1015            INST_MAXDATE  02/27/83
 INST_MINFLOW         .0      INST_MINTIME  0002            INST_MINDATE  02/22/83

