                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                       F304-R       WALNUT CREEK ABOVE PUENTE AVENUE                               RATING NO.   67-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         .4         .4        3.3        1.2        1.2        1.2         .4         .4        3.3        2.1        2.7         .4
    2         .4         .6       18.5        1.6         .4        2.1        1.2         .4        5.6        2.7        2.7         .4
    3         .4         .6        1.2        4.0         .9         .9        1.6         .4        2.7        2.7        2.7         .4
    4        1.6         .6        3.3       10.1        1.6        1.2         .9         .4        3.3        3.3        2.7         .4
    5        3.3         .4         .4        4.8         .4        1.2        4.7         .9        3.3        4.0        2.7         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   6         1.6         .6         .4         .9         .4        2.1       69.2        2.1        2.7        4.0        2.7         .2
   7         1.6         .6         .4         .9         .4        2.1       69.2        2.1        2.7        4.0        2.7         .2
   8         1.2         .6         .6         .2       22.7      252.0        1.6        2.1        3.3        1.6        2.7         .2
   9          .4         .4        3.3         .2       13.2        4.0         .2        2.1        2.1        2.1        2.7         .2
   10         .4         .4        4.8         .1       13.5      261.0         .2        2.7        2.1        2.7        1.6         .9

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .4       89.8         .6         .1       20.1        8.6         .2        2.7        2.1        2.7        2.7         .4
   12         .4        6.6         .6         .1       10.1       12.8         .4        2.1        2.1        2.7        1.6         .4
   13         .4         .1         .2        2.1       95.4      141.0         .2        2.7        2.1        2.1        2.1         .4
   14         .4         .0         .9        4.0      294.0       17.8         .4        2.7        2.7        2.7        2.7         .4
   15         .6         .0        4.0        4.8      387.0      150.0         .2        2.7        2.7        2.7        2.7         .2

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .6         .0        3.3        6.5       31.6      532.0         .2        3.3        2.7        2.7        2.7         .2
   17         .6         .0        1.2        5.6        3.3      188.0         .4        2.7        2.7        2.1        2.1         .2
   18         .6        1.6         .4        4.0        2.1       64.4         .6        2.7        2.7        2.1        2.1         .2
   19         .9         .0        1.2        4.0      207.0       42.4         .6        3.3        2.7        1.2        3.3         .4
   20         .6         .0        2.1        2.7       17.8       40.1         .6        3.3        2.7        1.6        2.1        1.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   21       67.9         .0        6.5        1.6       11.7       37.8         .9        3.3        2.7        1.6        1.2         .4
   22        4.2         .0        6.5        5.6        2.7       35.5        1.2        2.7        2.7        2.7         .9         .2
   23         .4         .0        4.8         .9       10.1       30.9        1.6        3.3        2.7        3.3         .6        1.2
   24         .4       45.7         .6        3.3       11.7        4.8        1.2        4.0        2.1        2.7         .6      155.0
   25         .4       96.4         .6        1.6       11.7         .9         .6        3.3        2.1        1.6         .6       34.3

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .4        1.6         .6        1.2        7.5         .9         .9        3.3        2.1        2.1         .9        4.0
   27         .6        1.6         .4         .6        2.7         .6         .9        2.7        2.1        2.1         .6         .2
   28         .6        1.2         .4         .2        2.1         .6         .9        3.3        2.1        2.1         .4         .4
   29         .4      293.0         .4        7.3         .0         .4        1.2        3.3        2.1        2.1         .4         .2
   30         .4        4.8         .6      282.0         .0         .4        2.1        3.3        2.1        2.7         .4        1.6
   31         .4         .0        2.1      103.0         .0         .4         .0        4.0         .0         .4         .4         .0

 ==========================================================================================================================================
 TOTAL      91.9      547.6       74.2      464.9    1,190.1    1,836.6      109.0       78.3        79.7       73.9       57.0     205.2
 MEAN        3.0       18.3        2.4       15.0       42.5       59.2        3.6        2.5        2.7        2.4        1.8        6.8
 MAX        67.9      293.0       18.5      282.0      387.0      532.0       69.2        4.0        5.6        4.0        3.3      155.0
 MIN          .4         .0         .2         .1         .4         .4         .2         .4        2.1         .4         .4         .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
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                     9,537.3              4,808.4                         13.2                        532.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW    3,580.0      INST_MAXTIME  1345            INST_MAXDATE  03/08/86
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

