                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                       F304-R       WALNUT CREEK ABOVE PUENTE AVENUE                               RATING NO.   67-01
                                         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         .1         .4         .2         .9       58.6       52.8       30.9         .9        4.0        4.8         .6         .9
    2         .1         .4         .4         .9       58.6      347.0       33.2         .2        1.2        6.5        1.2         .6
    3         .4         .4         .4        1.6       55.7      327.0       30.9         .9        1.2        2.7         .6         .6
    4         .4         .4         .2        1.6       58.6      119.0       28.6         .6        1.2         .4         .6         .6
    5         .1         .4         .2        1.6       40.1      212.0       28.6         .4        1.2         .6        2.7         .6

 ------------------------------------------------------------------------------------------------------------------------------------------
   6          .4         .4         .4        1.6       28.6      287.0       30.9         .4         .9         .9        2.7         .4
   7          .4         .4         .4        1.6       28.6      287.0       30.9         .4         .9         .9        2.7         .4
   8          .2        2.1         .4        4.5        8.6      115.0       33.2        4.0        1.2        4.8        2.1         .4
   9          .0         .9         .4      309.0       20.9      111.0       33.2        4.0        1.2        2.7         .9         .4
   10        1.2         .6         .6       99.8       19.4       64.7       26.3       27.6         .9         .4         .9         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .0         .4         .4      204.0       19.4        7.5        2.7       14.8        1.2         .4         .9         .2
   12         .0         .6         .2       25.1       19.4        7.5         .4       10.1        1.2         .4         .6         .2
   13         .0         .4         .4       87.1      432.0        6.5         .9        5.6        1.2         .4         .9         .2
   14         .0         .4         .6       37.4      887.0        5.6         .6        8.6        1.2        3.3        1.2         .2
   15         .0         .4         .4        4.0    1,280.0        5.6        2.1       10.1        1.2        4.0         .9         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .0         .2         .2        4.0    2,490.0        5.6        1.6       11.7        1.2        4.0         .6         .4
   17         .0         .0         .2       32.5    1,360.0        8.6        5.6       13.2        1.2        4.0         .6         .4
   18         .0         .1         .2       21.4    2,080.0       98.1        6.5       11.7        1.2        4.0         .6         .4
   19        3.4         .0         .2        4.8      941.0       79.5        8.6       13.2        1.6        4.8         .6        1.2
   20      127.0         .0         .2        4.0      791.0       76.0        8.6       14.8        2.7        4.8         .4         .9

 ------------------------------------------------------------------------------------------------------------------------------------------
   21         .9         .0        9.7        4.0      613.0       52.8       11.7       14.8        4.8        4.0         .6        1.2
   22         .9         .0         .9        4.0      604.0       33.2       16.3        6.5        4.8        2.1         .6        1.6
   23         .9         .2         .9        4.0      403.0       30.9       14.8        4.8        6.5         .6         .6        1.6
   24         .9         .1       16.9        2.7      325.0       33.2       13.8        4.0        5.6         .6         .6        1.6
   25         .9         .1        2.7        1.6       90.0       61.9       16.3        3.3        5.6        4.0         .4        1.6

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .6         .2         .4        1.6       97.0       61.7       16.3        4.0        4.8        4.0         .9        1.6
   27         .9         .2         .6        2.1       92.3       30.9       16.3        4.0        4.0        4.8        1.6        1.6
   28         .9         .1         .9      652.0       12.5       30.9       18.8        4.8         .6        3.3        2.1        1.6
   29         .6         .1         .9    1,100.0       42.4       30.9         .9        3.3        8.6        2.1        1.2        1.6
   30         .4         .2         .9      165.0         .0       30.9        2.7         .9        4.0         .9         .9        1.2
   31         .6         .0         .9       58.6         .0       30.9         .0        2.7         .0         .6         .9         .0

 ==========================================================================================================================================
 TOTAL     141.8       17.5       42.3    2,851.0   12,944.4    2,487.2      472.2      206.5        77.4       84.2       32.7      25.0
 MEAN        4.6         .6        1.4       92.0      446.0       80.2       15.7        6.7        2.6        2.7        1.1         .8
 MAX       127.0        7.8       16.9    1,100.0    2,490.0      347.0       33.2       27.6        8.6        6.5        2.7        1.6
 MIN          .0         .0         .2         .9        8.6        5.6         .4         .2         .6         .4         .4         .2

 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
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    38,444.0             19,382.2                         53.0                      2,490.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW    6,280.0      INST_MAXTIME  1530            INST_MAXDATE  02/16/80
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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