                                                LOS ANGELES COUNTY DEPARTMENT OF PUBLIC WORKS
                         F274B-R       DALTON WASH AT MERCED AVENUE                               RATING NO.   6501
                                         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         .8        1.3         .6        1.6        2.3        5.2         .6      116.0       59.1         .4        4.4        3.7
    2        1.3        1.0       13.9        1.3        1.6        6.0         .4      112.0       56.4         .2        2.3        2.3
    3        1.3         .8         .4        2.5        1.9        1.9         .4      116.0       56.4         .3        2.7         .2
    4        1.3        1.0         .6        3.2        2.3         .4         .6      112.0       56.4         .2        1.3         .1
    5        1.0        1.0        3.2       10.5        3.2         .3        1.6      103.0       59.1         .2        1.6         .1

 ------------------------------------------------------------------------------------------------------------------------------------------
   6         1.3        1.3        2.9        1.6        3.2         .3       45.3       90.6       59.1         .2        6.9         .1
   7         1.3        1.3        2.9        1.6        3.2         .3       45.3       90.6       59.1         .2        6.9         .1
   8         5.2        1.9        1.9      192.0       15.4      278.0         .8       93.5       61.8         .1        7.9        1.0
   9         1.9        1.9        2.7      200.0        4.4       10.4       61.8       99.0       67.2         .1        5.2        4.4
   10        1.3        1.6       11.3      207.0        3.2      154.0      112.0      103.0       64.5         .1        7.9        4.4

 ------------------------------------------------------------------------------------------------------------------------------------------
   11        1.0       36.5        2.3      200.0        3.2        2.3      107.0       99.0       64.5         .1        7.9        4.4
   12        1.3        1.6        2.7      200.0        5.2        3.6      122.0       84.0       61.8         .1        6.9        4.4
   13        1.9        1.6        1.6        7.7       49.2       75.6      128.0       60.6       61.8         .1        6.0        4.4
   14        1.3         .6        3.2        1.9      209.0        1.6      116.0       48.5       67.2         .8        6.9        4.4
   15        1.0         .8        3.2      102.0      204.0       72.3       53.7       64.5       67.2        7.9        6.9        5.2

 ------------------------------------------------------------------------------------------------------------------------------------------
   16         .8        1.3        3.2      214.0       94.9      312.0        1.3      156.0       35.5         .6        7.9        4.4
   17        1.0        1.0        4.4      207.0        7.9        5.2       59.8      171.0         .4         .1        6.9        5.2
   18        1.0        1.3        3.7      207.0        3.2        1.0      116.0      152.0         .8         .1        1.6        4.4
   19        1.6        1.3        1.3      207.0      103.0         .6      116.0      144.0        7.9         .1         .3        5.2
   20        2.3        1.9        1.6      214.0        2.3        1.0      120.0      199.0        7.9         .1        3.2        8.0

 ------------------------------------------------------------------------------------------------------------------------------------------
   21       44.9        1.9        1.6      207.0        3.2        2.7      128.0      235.0        7.9        1.9        6.0        2.3
   22        1.0        1.0        1.0      200.0        4.4        2.7      120.0      242.0        7.9         .2        5.3        1.0
   23        1.3        1.3        1.3      200.0        3.7        2.7      112.0      130.0        9.1        1.6        2.7         .6
   24        1.9       42.6        1.3      200.0        2.3        2.3      112.0       78.0        6.9        6.0        3.2      496.0
   25         .8       89.7        1.0      207.0         .3        1.3      112.0       75.3        5.2        6.0        3.2       50.6

 ------------------------------------------------------------------------------------------------------------------------------------------
   26         .8        1.0         .8      214.0        1.0         .8      116.0       78.0        6.0        6.0        2.3         .2
   27         .6         .8        1.3      228.0        3.2        1.3      116.0       67.2        6.0        6.9        2.7        3.3
   28        1.0         .6        1.3      242.0        4.4        2.3      116.0       61.8        7.9        3.7        2.7        1.6
   29         .8      154.0         .6      157.0         .0        2.7      120.0       57.2        7.9        6.0        2.7         .6
   30         .6         .8         .8      227.0         .0        4.4      120.0       61.8        6.9        6.9        2.7         .1
   31         .8         .0        1.3       80.4         .0        2.3         .0       59.1         .0        7.9        3.7         .0

 ==========================================================================================================================================
 TOTAL     112.2      354.4       78.9    4,447.7      748.3      958.8    2,339.7    3,353.2     1,045.1       65.0      141.0     622.7
 MEAN        3.6       11.8        2.5      143.0       26.7       30.9       78.0      108.0       34.8        2.1        4.5       20.8
 MAX        44.9      154.0       13.9      242.0      209.0      312.0      128.0      242.0       67.2        7.9        9.1      496.0
 MIN          .6         .6         .4        1.3         .3         .3         .4       48.5         .4         .1         .3         .1

 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
 ---------------------------  -------------------  ---------------------------  ---------------------------  ---------------------------
                    28,298.2             14,267.0                         39.1                        496.0                           .1

 INSTANTANEOUS DATA
 INST_MAXFLOW    5,550.0      INST_MAXTIME  1330            INST_MAXDATE  03/08/86
 INST_MINFLOW         .1      INST_MINTIME  0000            INST_MINDATE

