                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                      F190-R       SAN GABRIEL RIVER AT FOOTHILL BLVD.                               RATING NO.   5401
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1981

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1         .0         .0      345.0         .0        6.0       33.7        3.5        3.1        1.2         .1        8.1         .7
    2         .0         .0      354.0         .0        4.6       24.0        3.5        3.5        1.2         .0       10.2         .3
    3         .0         .0      288.0         .0        4.2       10.9        3.5        3.1        1.2         .0       10.9         .4
    4         .0         .0       16.6         .0        3.8        8.8        3.5        3.5        1.9         .0       12.8         .4
    5         .0         .0        5.3         .0        3.8       10.2        3.1        3.5         .0         .1       10.9         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   6          .0         .0        3.5         .0        3.5        8.1        3.1        3.8         .5         .0         .1         .4
   7          .0         .0        3.5         .0        3.5        8.1        3.1        3.8         .5         .0         .1         .4
   8          .0         .0       14.0         .0        3.5        5.3        3.1        3.5        1.9         .1         .0         .4
   9          .0         .0      252.0         .0        4.6        4.6        3.1        2.7         .7         .1         .0         .2
   10         .0         .0      345.0         .0        3.5        5.3        2.7        2.7        4.2         .0         .0         .2

 ------------------------------------------------------------------------------------------------------------------------------------------
   11         .0         .0      225.0         .0        3.1        4.6        2.7        2.7        4.6         .4       14.1         .3
   12         .0       10.9        4.6         .0        3.1        4.6        2.3        3.1         .6         .5         .0         .3
   13         .0      238.0        1.9         .0        2.7        4.6        2.1        2.7         .6         .2       14.1         .4
   14         .0      288.0        1.6         .0        3.1        4.6        1.9        2.3         .8         .2       16.6         .4
   15         .0      288.0        1.2         .0        3.1        4.2        1.9        2.3        1.6         .4        8.8         .4

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .0      296.0         .7         .0        2.7        4.6        1.9        2.7         .4         .2         .3         .4
   17         .0      321.0         .7         .0        2.7        7.4        1.9        2.7         .0         .0         .3         .4
   18         .0      345.0         .6         .0        2.7        8.1        4.2        2.3         .3         .0         .3         .4
   19         .3      354.0         .5         .0        3.8       12.8        3.8        2.3         .5         .0         .3         .4
   20         .2      362.0         .5         .0        5.3       10.9        3.1        3.5         .3         .0         .2         .5

 ------------------------------------------------------------------------------------------------------------------------------------------
   21         .1      362.0         .4         .0        2.7        6.0        3.5        3.1         .0         .0         .1         .4
   22         .1      362.0         .3         .0        2.3        5.3        3.1        2.3         .0         .0        3.5         .4
   23         .0      362.0         .0         .0        2.3        4.6        3.1        1.9         .0         .0        7.4         .4
   24         .0      354.0         .0         .0        2.3        5.3        3.1        2.3         .3         .0        8.8         .4
   25         .0      354.0         .0         .0        2.7        4.2        2.7        1.9         .0         .0        8.8         .5

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .0      354.0         .0         .0        3.8        3.8        2.3        2.3         .0         .0        6.0         .6
   27         .0      354.0         .0         .0        2.7        3.8        2.3        2.3         .1         .0         .3         .6
   28         .0      354.0         .0         .0        4.2        3.8        2.7        1.9         .3         .0         .3         .6
   29         .0      345.0         .0       76.1         .0        3.8        3.5         .8         .6         .0         .4         .5
   30         .0      345.0         .0       10.9         .0        3.8        2.7        1.2         .2         .0         .4         .5
   31         .0         .0         .0        6.7         .0        3.5         .0         .8         .0        5.3         .7         .0

 ==========================================================================================================================================
 TOTAL        .7    6,048.9    1,863.7       93.7       95.9      231.9       87.6       80.3        27.1        7.7      145.5      12.6
 MEAN         .0      202.0       60.1        3.0        3.4        7.5        2.9        2.6         .9         .2        4.7         .4
 MAX          .3      362.0      354.0       76.1        6.0       33.7        4.2        3.8        4.6        5.3       16.6         .7
 MIN          .0         .0         .0         .0        2.3        3.5        1.9         .8         .0         .0         .0         .2

 ANNUAL DATA
 WTR YEAR 1981 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    17,247.5              8,695.6                         23.8                        362.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW      477.0      INST_MAXTIME  1500            INST_MAXDATE  01/29/81
 INST_MINFLOW         .0      INST_MINTIME  0000            INST_MINDATE

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