                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                   F312-R       SAN JOSE CHANNEL ABOVE WORKMAN MILL ROAD                               RATING NO.   78-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       14.2       17.4       19.8       11.8       31.2       24.6       25.8       21.0       14.2       12.6       13.4       15.6
    2       13.4       15.0       99.8       13.4       22.2       23.4       25.8       19.8       14.2       11.8       13.4       15.6
    3       11.0       15.0       29.3       11.8       23.4       23.4       25.8       21.0       14.2       11.8       12.6       15.1
    4       12.6       15.0       21.0       19.8       23.4       24.6       25.8       21.0       13.4       13.4       12.6       14.6
    5       13.4       15.0       16.2       48.5       21.0       25.8       27.0       23.4       13.4       15.0       12.6       14.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   6        15.0       14.2       15.0       21.0       19.8       27.0      258.0       24.6       12.6       16.2       12.6       13.7
   7        15.0       14.2       15.0       21.0       19.8       27.0      258.0       24.6       12.6       16.2       12.6       13.7
   8        24.3       15.0       15.0       17.4       66.9      488.0       24.6       21.0       16.2       11.8       12.6       12.8
   9        17.4       17.4       13.4       15.0       19.8       33.3       22.2       19.8       16.2       11.0       12.6       12.3
   10       14.2       18.6       17.4       15.0       19.8      961.0       24.6       21.0       15.0       10.2       11.8       11.8

 ------------------------------------------------------------------------------------------------------------------------------------------
   11       17.4      509.0       15.0       16.2       19.8       44.8       25.8       21.0       14.2       11.0       12.6       11.7
   12       19.8       60.6       14.2       16.2       19.8       72.3       25.8       22.2       14.2       11.8       12.6       11.7
   13       22.2       28.4       14.2       18.6      411.0      433.0       23.4       21.0       12.6       11.0       11.8       11.6
   14       22.2       27.0       15.0       21.0      999.0       52.3       25.8       21.0       14.2       11.8       10.2       11.6
   15       22.2       24.6       15.0       17.4    1,850.0      431.0       22.2       17.4       14.2       14.2       12.6       11.5

 ------------------------------------------------------------------------------------------------------------------------------------------
   16       19.8       23.4       14.2       18.6      102.0    1,240.0       23.4       17.4       14.2       15.0       11.0       11.5
   17       19.8       23.4       16.2       18.6       67.4       68.7       22.2       17.4       13.4       12.6       11.0       11.4
   18       21.0       23.4       17.4       19.8       35.4       38.2       23.4       21.0       13.4       12.6       11.8       11.7
   19       18.6       21.0       16.2       19.8      454.0       34.0       23.4       21.0       14.2       12.6       10.2       11.9
   20       21.0       21.0       15.0       23.4       34.0       31.2       24.6       16.2       13.4       12.6       13.4       12.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   21      165.0       19.8       16.2       24.8       27.0       29.8       23.4       18.6       12.6       12.6       15.0       12.4
   22       30.3       19.8       16.2       21.0       23.4       31.2       23.4       16.2       12.6       13.4       14.2       12.7
   23       18.6       21.0       18.6       21.0       23.4       29.8       22.2       15.0       12.6       14.2       15.0       12.9
   24       19.8      163.0       19.8       21.0       21.0       27.0       22.2       15.0       12.6       12.6       15.0      146.0
   25       19.8      479.0       19.8       19.8       21.0       24.6       23.4       15.0       11.8       12.6       15.0      544.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   26       18.6       24.3       19.8       22.2       22.2       23.4       23.4       16.2       12.6       12.6       15.0       13.0
   27       18.6       17.4       19.8       22.2       22.2       24.6       23.4       15.0       12.6       17.4       15.9       12.8
   28       19.8       16.2       16.2       17.4       23.4       24.6       24.6       14.2       12.6       16.2       15.8       12.7
   29       16.2    1,370.0       16.2       37.2         .0       25.8       23.4       15.0       12.6       13.4       15.8       12.6
   30       15.0       35.0       15.0      816.0         .0       24.6       24.6       14.2       12.6       13.4       15.8       12.5
   31       16.2         .0       14.2      402.0         .0       24.6         .0       14.2         .0       14.2       15.7         .0

 ==========================================================================================================================================
 TOTAL     710.8    3,083.3      607.3    1,806.5    4,462.9    4,392.4      994.2      577.8       406.8      404.2      412.2   1,047.3
 MEAN       22.9      103.0       19.6       58.3      159.0      142.0       33.1       18.6       13.6       13.0       13.3       33.8
 MAX       165.0    1,370.0       99.8      816.0    1,850.0    1,240.0      258.0       24.6       16.2       17.4       15.9      544.0
 MIN        11.0       13.4       13.4       11.8       19.8       23.4       22.2       14.2       11.8       10.2       10.2       11.4

 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
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    37,498.9             18,905.7                         51.8                      1,850.0                         10.2

 INSTANTANEOUS DATA
 INST_MAXFLOW    7,250.0      INST_MAXTIME  0115            INST_MAXDATE  02/15/86
 INST_MINFLOW        7.0      INST_MINTIME  1415            INST_MINDATE  01/03/86

