01/15/04
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                December 2003
Estimated numbers are in bold print
                                         DELTA INFLOW                                           DELTA EXPORTS                               OUTFLOW INDEX         EXPORT/INFLOW
         Sacto R          Yolo + East Side        S. Joaquin Riv Total          Clifton         Contra Byron        Total    3-day
        @Freeport  SRTP    Misc   Streams          7-day Monthly Delta           Court   Tracy  Costa Bethany NBA   Delta     Avg     NDOI   7-day Monthly  Daily 3 Day 14 Day
  Date   prev dy prev wk prev dy  prev dy prev dy   Avg    Avg   Inflow   NDCU   (CLT)   (TRA)  (CCC) (BBID)       Exports TRA & CLT daily    Avg    Avg     (%)   (%)   (%)
12/01/03  11,910     235       0      356   1,550  1,553  1,538  14,051   1,087   2,480   4,340    29      0    82   6,931    6,836   6,033  5,379   6,033   48.5% 49.4% 47.9%
12/02/03  12,350     235       0      364   1,538  1,546  1,533  14,487     631   1,483   4,341    21      0    77   5,922    6,496   7,934  5,832   6,983   40.2% 46.0% 45.8%
12/03/03  13,789     235       0      373   1,528  1,539  1,526  15,925     631   1,998   4,327    17      0    78   6,420    6,323   8,874  6,413   7,614   39.7% 42.7% 44.5%
12/04/03  15,088     235       0      370   1,511  1,527  1,512  17,204     681   2,495   4,339    20      0    88   6,941    6,328   9,582  6,899   8,106   39.7% 39.9% 44.0%
12/05/03  16,385     235       0      371   1,470  1,506  1,490  18,461     274   2,491   4,358    23      0    94   6,966    6,670  11,221  7,625   8,729   37.1% 38.8% 45.5%
12/06/03  16,791     235       0      377   1,401  1,490  1,480  18,804     731   2,494   4,379    30      0    90   6,992    6,852  11,081  8,528   9,121   36.5% 37.7% 45.8%
12/07/03  16,048     235       0      376   1,430  1,473  1,473  18,089    (360)  2,992   4,384    26      0    91   7,492    7,032  10,958  9,383   9,383   40.8% 38.1% 46.1%
12/08/03  16,378     235       0      419   1,430  1,459  1,469  18,462  (1,273)    453   4,361    32      0    85   4,932    6,354  14,804 10,636  10,061   26.1% 34.4% 40.8%
12/09/03  19,185     235       0      569   1,445  1,443  1,463  21,434  (1,273)    458   3,784    35      0    75   4,352    5,477  18,355 12,125  10,982   19.8% 28.3% 33.9%
12/10/03  23,618     235       0      457   1,413  1,430  1,458  25,723    (767)    491   3,087    33      0    77   3,688    4,211  22,801 14,114  12,164   13.9% 19.3% 24.8%
12/11/03  22,705     235       0      464   1,418  1,432  1,461  24,822  (4,646)    972   2,723    16      0    70   3,781    3,839  25,687 16,415  13,394   14.9% 16.0% 21.6%
12/12/03  21,519     235       0      547   1,487  1,445  1,464  23,788  (3,049)  1,983   2,771    21      0    77   4,852    4,009  21,985 17,953  14,110   20.0% 16.2% 21.7%
12/13/03  23,984     235       0      532   1,494  1,452  1,465  26,245  (2,364)  2,991   3,405    28      0    77   6,500    4,948  22,109 19,528  14,725   24.4% 19.8% 25.5%
12/14/03  25,988     235       0      513   1,480  1,459  1,466  28,216  (2,364)  3,998   4,212    30      0    75   8,315    6,454  22,265 21,144  15,263   29.1% 24.7% 31.6%
12/15/03  26,354     235       0      705   1,473  1,464  1,467  28,767  (5,103)  6,623   4,397    28      0    76  11,124    8,542  22,746 22,278  15,762   38.3% 30.8% 39.8%
12/16/03  29,839     235       0      696   1,485  1,472  1,467  32,255    (767)  6,676   4,291    26      0    74  11,066   10,066  21,956 22,793  16,149   34.0% 33.8% 44.3%
12/17/03  34,939     235       0      529   1,464  1,476  1,466  37,167    (767)  6,024   4,393    33      0    77  10,527   10,801  27,407 23,451  16,812   28.0% 33.0% 44.5%
12/18/03  34,413     235       0      474   1,447  1,469  1,464  36,569    (589)  5,168   4,379    32      0    83   9,662   10,310  27,496 23,709  17,405   26.1% 29.2% 40.2%
12/19/03  31,098     235       0      451   1,438  1,461  1,463  33,222    (589)  4,911   4,307    30      0    85   9,333    9,727  24,478 24,065  17,777   27.7% 27.3% 36.5%
12/20/03  28,832     235       0      448   1,438  1,464  1,465  30,953     552   5,280   4,345    22      0    81   9,728    9,463  20,672 23,860  17,922   31.1% 28.2% 34.3%
12/21/03  27,463     235       0      460   1,503  1,470  1,467  29,661     274   6,339   4,336    14      0    69  10,758    9,839  18,629 23,340  17,956   36.0% 31.5% 34.7%
12/22/03  27,017     235       0      476   1,515  1,473  1,469  29,243      46   6,329   4,340    49      0    73  10,790   10,323  18,407 22,721  17,976   36.5% 34.5% 35.4%
12/23/03  28,508     235       0      547   1,505  1,479  1,471  30,795      (4)  7,125   4,359    40      0    68  11,593   10,943  19,206 22,328  18,030   37.3% 36.6% 36.7%
12/24/03  28,987     235       0      515   1,510  1,489  1,472  31,247  (1,145)  7,146   4,288    15      0    64  11,513   11,196  20,879 21,395  18,148   36.6% 36.8% 37.1%
12/25/03  28,661     235   3,500      603   1,515  1,509  1,477  34,514  (1,880)  7,146   4,232    24      0    64  11,467   11,433  24,927 21,028  18,420   33.0% 35.5% 37.0%
12/26/03  33,039     235     189    1,183   1,577  1,539  1,483  36,223  (1,651)  7,146   4,312    32      0    68  11,557   11,424  26,317 21,291  18,723   31.6% 33.6% 35.9%
12/27/03  39,707     235       0      961   1,648  1,564  1,490  42,551  (1,473)  6,444   4,343    30      0    72  10,888   11,207  33,136 23,072  19,257   25.3% 29.7% 34.0%
12/28/03  42,352     235       0      698   1,680  1,583  1,496  44,965  (1,473)  6,308   4,305    29      0    77  10,718   10,952  35,720 25,513  19,845   23.6% 26.6% 32.1%
12/29/03  43,942     235       0      601   1,644  1,602  1,501  46,422    (382)  6,785   4,316    19      0    79  11,199   10,833  35,605 27,970  20,389   23.9% 24.3% 30.6%
12/30/03  43,103     235   8,330      689   1,640  1,634  1,509  53,997  (3,171)  5,288   4,346    45      0    78   9,757   10,449  47,411 31,999  21,289   17.8% 21.6% 28.3%
12/31/03  43,733     235   4,416      826   1,733  1,668  1,517  50,943  (3,221)  3,867   4,323    59      0    59   8,308    9,642  45,856 35,567  22,082   16.1% 19.1% 25.4%

  Total  827,725   7,285  16,435   16,950  46,810 46,568 45,938 915,205 (33,405)132,384 128,423   888      0 2,379 264,074  258,980 684,536 578,357460,610  933.8%963.1%1126.2%
Average   26,701     235     530      547   1,510  1,502  1,482  29,523  (1,078)  4,270   4,143    29      0    77   8,519    8,354  22,082 18,657           30.1% 31.1% 36.3%