                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                     F190-R       SAN GABRIEL RIVER AT FOOTHILL BLVD.                               RATING NO.   54.01
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1983

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1      370.0      417.0         .6        6.4       39.5    5,991.0      475.0    1,010.0      718.0      534.0        2.4        2.2
    2      379.0      417.0         .6        6.4       39.5   12,810.0      475.0    1,180.0      704.0      534.0        2.6        2.2
    3      379.0      417.0         .4        6.4       28.7   12,367.0      480.0    1,090.0      704.0      523.0        2.6        2.2
    4      389.0      417.0         .4        6.2      110.0    9,347.0      498.0    1,070.0      704.0      523.0        2.8        2.2
    5      408.0      417.0         .4        6.0      256.0    4,561.0      565.0    1,030.0      675.0      523.0        3.0        2.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   6       417.0      417.0         .4      110.0      248.0    1,409.0      595.0    1,020.0      689.0      544.0        3.2        2.2
   7       417.0      417.0         .4      110.0      248.0    1,409.0      595.0    1,020.0      689.0      544.0        3.2        2.2
   8       427.0      417.0      389.0      336.0      364.0    2,220.0      649.0      718.0      747.0      534.0        3.4        2.2
   9       427.0      203.0      398.0      328.0      150.0    1,928.0      655.0      733.0      733.0      534.0        3.6        2.2
   10      417.0         .6      321.0      312.0      312.0    1,843.0      665.0      791.0      762.0      523.0        3.8        2.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   11      417.0         .0      266.0      266.0      296.0    1,567.0      665.0      762.0      791.0      523.0        4.0        2.2
   12      427.0         .0      252.0      320.0      280.0    1,553.0      669.0      747.0      776.0      523.0        4.0        2.0
   13      436.0         .0      245.0      312.0      264.0    1,554.0      665.0      704.0      776.0      555.0        4.0        2.0
   14      250.0         .0      194.0      304.0      248.0    1,207.0      659.0      704.0      762.0      555.0        4.2        2.0
   15       96.2         .0        2.7      312.0      328.0      644.0      654.0      704.0      762.0      396.0        4.6        2.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   16      116.0      171.0        1.2      320.0      423.0    1,578.0      649.0      689.0      762.0      336.0        4.6        2.0
   17      135.0      389.0         .8      312.0      432.0      612.0      644.0      579.0      747.0      432.0        4.8        2.0
   18      154.0      408.0         .8      312.0      432.0    1,559.0      270.0      534.0      733.0      423.0        6.4        2.0
   19      144.0      436.0         .7      344.0      432.0    1,564.0       77.3      523.0      733.0      423.0        7.9        2.4
   20      125.0      417.0         .7      304.0      432.0    1,528.0      300.0      544.0      675.0      423.0        5.8        2.6

 ------------------------------------------------------------------------------------------------------------------------------------------
   21      111.0      408.0         .7      304.0      432.0    1,316.0      665.0      579.0      603.0      423.0        4.6        3.0
   22       99.5      408.0      148.0      206.0      423.0      709.0      630.0      579.0      591.0      330.0        4.4        3.2
   23       86.5      408.0       55.7       81.4      223.0      373.0      624.0      615.0      544.0        7.6        4.2        3.6
   24       76.7      408.0        4.6       16.3      212.0      263.0      615.0      663.0      534.0        5.2        4.0        3.8
   25      289.0      398.0        2.3       29.6      414.0      378.0      559.0      675.0      534.0        5.0        3.8        4.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   26      446.0      398.0        1.2       20.6      215.0      368.0      441.0      675.0      534.0        5.4        3.4        4.4
   27      436.0      398.0        1.2      336.0      165.0      364.0      439.0      704.0      534.0        4.4        3.2        4.8
   28      427.0      408.0        1.2       82.0      343.0      365.0      462.0      704.0      523.0        5.0        3.0        5.0
   29      427.0      408.0         .8      124.0         .0      357.0    1,375.0      704.0      523.0        3.4        2.8       12.2
   30      427.0         .6         .8       31.0         .0      380.0    1,896.0      704.0      534.0        3.6        2.6       11.4
   31      417.0         .0         .8       26.0         .0      481.0         .0      718.0         .0        2.8        2.4         .0

 ==========================================================================================================================================
 TOTAL   9,582.9    8,994.2    2,482.0    5,816.3    7,813.7   71,923.0   18,659.3   23,308.0    20,111.0   10,700.4      119.3      98.8
 MEAN      309.0      300.0       80.1      188.0      279.0    2,320.1      622.0      752.0      670.0      345.0        3.8        3.3
 MAX       446.0      436.0      398.0      344.0      432.0   12,810.0    1,896.0    1,180.0      791.0      555.0        7.9       12.2
 MIN        76.7         .0         .4        6.0       28.7      263.0       77.3      523.0      523.0        2.8        2.4        2.0

 ANNUAL DATA
 WTR YEAR 1983 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                   356,249.2            179,609.0                         16.1                     12,810.0                           .0

 INSTANTANEOUS DATA
 INST_MAXFLOW   12,810.0      INST_MAXTIME  0000            INST_MAXDATE  03/02/83
 INST_MINFLOW         .0      INST_MINTIME  1830            INST_MINDATE  01/30/83

