                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                        F274B-R       DALTON WASH AT MERCED AVENUE                               RATING NO.   65-01
                                         MEAN DAILY DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR 1990

   DAY      OCT        NOV        DEC        JAN        FEB        MAR        APR        MAY        JUN        JUL        AUG        SEP
 ------------------------------------------------------------------------------------------------------------------------------------------
    1        8.5         .2       40.1         .7       11.9         .7      193.0       25.9       21.0       30.9       30.1       43.1
    2       82.0        1.1        1.0        1.4        1.6         .7      154.0       25.2       22.8       30.7       32.7       41.8
    3      134.0        3.0        1.2        1.6        1.6        1.4      189.0      253.0       25.4       32.6       31.4       40.0
    4      130.0         .3        1.6         .8        9.0        2.9      156.0       12.3       28.6       34.0       31.5       41.5
    5      129.0         .2        1.3         .6        2.2        2.3       26.0        1.9       31.9       35.0       34.0       41.1

 ------------------------------------------------------------------------------------------------------------------------------------------
   6       127.0        6.0         .4         .7        2.2      110.0       26.3        1.3       33.1       29.6       27.9       38.9
   7       127.0        6.0         .4         .7        2.2      110.0       26.3        1.3       33.1       29.6       27.9       38.9
   8       140.0        1.9         .2        1.0       48.6      117.0      147.0        1.2       29.9       25.2       27.0       43.1
   9       151.0       59.5         .3         .7      124.0      118.0      121.0        1.5       27.6       24.5       26.7       41.3
   10      124.0      121.0         .3         .6      120.0      120.0      152.0        1.4       27.5       24.0       25.3       39.8

 ------------------------------------------------------------------------------------------------------------------------------------------
   11      126.0      121.0         .3         .9      119.0      140.0      165.0        2.0       28.7       24.0       25.5       27.5
   12      126.0      124.0         .3        4.2      119.0      132.0      165.0        1.6       28.5       24.0       28.1       28.7
   13      122.0      127.0         .3       52.5      109.0      141.0      165.0        2.2       28.1       24.8       28.7       29.5
   14      120.0      129.0         .3       20.5      105.0      147.0      165.0       14.1       21.9       26.6       32.7       29.3
   15      120.0      133.0         .3        6.4      104.0      148.0      129.0       24.0        2.0       27.4       31.9       27.5

 ------------------------------------------------------------------------------------------------------------------------------------------
   16      120.0      142.0         .3        5.0       86.5      148.0       21.0       17.5       12.3       27.2       25.8       29.5
   17      126.0      134.0         .3       19.1      568.0      149.0      145.0        5.0       32.2       30.5       30.5       30.8
   18      104.0      135.0         .3        2.2       42.0      155.0      128.0       16.5       31.9       30.4       32.3       28.1
   19        1.2      142.0         .3        2.1        2.2      156.0      145.0       19.5       31.0       29.7       33.1       26.7
   20         .5      147.0         .3        2.1        2.2      157.0      167.0       26.4       32.6       31.2       29.4       25.7

 ------------------------------------------------------------------------------------------------------------------------------------------
   21         .9      151.0         .3        2.3        2.2      164.0      174.0       30.1       34.3       33.8       30.9       25.1
   22       17.2      156.0         .3        2.2       32.1      177.0      179.0       32.5       36.5       33.0       30.8       25.3
   23        1.6      152.0         .3        1.9      100.0      193.0      214.0       33.8       24.6       29.7       31.9       26.2
   24        1.0      153.0         .3        2.1      113.0      198.0      167.0       34.7        1.7       28.5       32.1       26.0
   25       14.7      157.0         .3        2.0       90.0      201.0      171.0       32.0       19.0       30.9       33.5       25.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   26        1.1      149.0         .3        2.0        2.5      165.0      172.0       29.4       30.8       35.0       35.9       25.2
   27         .4      120.0         .3        2.0        1.1      113.0      172.0       31.0       29.5       38.5       38.2       24.4
   28         .3      120.0         .3        2.1         .8      166.0      171.0      252.0       27.5       38.0       40.2       25.9
   29         .4      101.0         .3        2.2         .0      177.0      177.0       24.3       30.0       38.5       38.7       26.9
   30         .5       73.5         .3       22.4         .0      210.0      117.0       22.0       30.9       21.8       40.9       28.3
   31         .3         .0         .3       15.2         .0      221.0         .0       20.5         .0       22.8       42.8         .0

 ==========================================================================================================================================
 TOTAL   2,160.6    2,861.2       53.0      226.0    1,921.9    4,055.0    4,412.0      768.9       795.8      916.9      986.3     953.9
 MEAN       70.0       95.0        2.0        7.0       69.0      131.0      147.0       25.0       27.0       30.0       32.0       32.0
 MAX       151.0      157.0       40.0       52.0      568.0      221.0      214.0      252.0       36.5       38.5       42.8       43.1
 MIN          .3         .2         .2         .6         .8         .7       21.0        1.2        1.7       21.8       25.3       24.4

 ANNUAL DATA
 WTR YEAR 1990 TOTAL IN A.F.  ANNUAL TOTAL IN CFS  ANNUAL AVERAGE DAILY IN CFS  ANNUAL MAXIMUM DAILY IN CFS  ANNUAL MINIMUM DAILY IN CFS
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    39,890.6             20,111.5                         55.6                        568.0                           .2

 INSTANTANEOUS DATA
 INST_MAXFLOW    5,390.0      INST_MAXTIME  1545            INST_MAXDATE  04/17/90
 INST_MINFLOW         .1      INST_MINTIME  0000            INST_MINDATE

