                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                    F312-R       SAN JOSE CHANNEL ABOVE WORKMAN MILL RD                               RATING NO.   78-01
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1980

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1       14.2       11.8        7.0        6.3       74.1       55.4       29.8       28.4       21.0       19.8       18.6       21.0
    2       13.4       11.0        7.0        7.0       64.6      711.0       28.4       25.8       21.0       19.8       18.6       21.0
    3       12.7       11.0        7.0        6.3       57.0      672.0       27.0       25.8       21.0       22.2       19.8       21.0
    4       11.8       11.8        7.8        6.3       53.8       79.1       28.4       25.8       21.0       22.2       19.8       19.8
    5       11.0       11.0        7.0        6.3       44.7      299.0       28.4       27.0       19.8       22.2       19.8       18.6

 ------------------------------------------------------------------------------------------------------------------------------------------
   6        11.8       10.3        7.8        6.3       31.2      525.0       28.4       25.8       19.8       19.8       18.6       21.0
   7        11.8       10.3        7.8        6.3       31.2      525.0       28.4       25.8       19.8       19.8       18.6       21.0
   8        11.8       11.0        7.0       10.2       29.8       70.3       27.0       25.8       19.8       18.6       18.6       22.2
   9        11.0       10.2        7.0      780.0       31.2       60.8       27.0       25.8       19.8       18.6       18.6       21.0
   10        9.4       10.2        7.0       73.1       31.2       70.4       25.8       49.4       19.8       18.6       18.6       21.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   11       10.2       10.2        7.0      621.0       31.2       58.9       27.0       25.8       19.8       18.6       18.6       21.0
   12       10.2       10.2        7.0       54.6       31.2       47.4       25.8       27.0       18.6       18.6       17.4       22.2
   13       10.2        9.4        6.3      120.0    1,280.0       44.2       27.0       28.4       19.8       19.8       17.4       22.2
   14       10.2        9.4        7.0       41.8    1,690.0       42.6       25.8       27.0       19.8       19.8       18.6       22.2
   15       11.0        9.4        6.3       13.4    1,400.0       41.0       25.8       28.4       19.8       18.6       17.4       23.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   16       10.2        9.4        7.0       11.8    3,150.0       39.6       24.6       27.0       19.8       17.4       18.6       21.0
   17        9.4       11.8        7.0       15.8    1,380.0       38.2       24.6       28.4       18.6       17.4       19.8       22.2
   18       10.2        9.4        7.0      108.0    2,790.0       80.0       24.6       28.4       19.8       18.6       19.8       22.2
   19       19.2        8.6        7.0        7.0      564.0       38.2       25.8       28.4       19.8       19.8       17.4       21.0
   20      274.0        8.6        7.0        6.3      654.0       35.4       25.8       28.4       19.8       19.8       17.4       24.6

 ------------------------------------------------------------------------------------------------------------------------------------------
   21       17.4        8.6       19.2        6.3      359.0       34.0       27.0       29.8       19.8       19.8       17.4       23.4
   22       16.2        8.6        7.0        6.3      145.0       32.6       35.4       27.0       19.8       17.4       17.4       47.2
   23       15.0        7.8        6.3        6.3      107.0       31.2       27.0       25.8       21.0       17.4       18.6       68.4
   24       14.2        7.8       32.0        6.3      103.0       34.0       27.0       24.6       18.6       17.4       18.6       82.0
   25       13.4        7.8       13.4        6.3       90.0       80.6       25.8       23.4       18.6       17.4       18.6       92.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   26       13.4        7.8        8.6        6.3       78.0       84.7       25.8       22.2       18.6       18.6       17.4       62.7
   27       13.4        7.8        7.0        7.0       66.5       31.2       25.8       22.2       18.6       18.6       17.4       64.6
   28       13.4        7.8        6.3    1,560.0       62.7       29.8       43.0       19.8       19.8       19.8       18.6       62.7
   29       11.8        7.0        6.3    1,750.0       58.9       29.8       25.8       19.8       21.0       18.6       19.8       78.0
   30       11.8        7.0        6.3       69.1         .0       28.4       28.4       19.8       21.0       19.8       21.0      103.0
   31       11.8         .0        6.3       72.2         .0       28.4         .0       19.8         .0       21.0       19.8         .0

 ==========================================================================================================================================
 TOTAL     645.5      292.2      259.7    5,416.5   14,489.3    3,527.3      825.0      816.8       595.2      595.8      576.6   1,116.0
 MEAN       20.8        9.7        8.4      175.0      500.0      114.0       27.5       26.3       19.8       19.2       18.6       37.2
 MAX       274.0       19.5       32.0    1,750.0      315.0      711.0       43.0       49.4       21.0       22.2       21.0      103.0
 MIN         9.4        7.0        6.3        6.3       29.8       28.4       24.6       19.8       18.6       17.4       17.4       18.6

 ANNUAL DATA
 WTR YEAR 1980 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    57,829.9             29,155.9                         79.7                      3,150.0                          6.3

 INSTANTANEOUS DATA
 INST_MAXFLOW   13,000.0      INST_MAXTIME  0130            INST_MAXDATE  02/18/80
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

