05/28/03
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                April 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     (%)   (%)   (%)
04/01/03  19,878     175       0      609   1,987  1,983  1,939  22,649   1,750   5,696   3,638   252      0    42   9,628    9,889  11,271 12,481  11,271   41.2% 40.8% 34.9%
04/02/03  18,524     172       0      625   1,939  1,976  1,972  21,260   1,522   5,557   3,346   245     20    39   9,167    9,329  10,571 12,077  10,921   41.8% 41.0% 34.8%
04/03/03  18,037     169       0      698   2,004  1,983  1,997  20,908     837   5,098   2,910   239     29    38   8,257    8,749  11,814 11,915  11,219   38.2% 40.4% 34.3%
04/04/03  17,923     167       0      704   2,047  1,990  2,003  20,841     887   5,686   2,756   240     11    45   8,716    8,451  11,238 11,777  11,223   40.5% 40.1% 34.4%
04/05/03  18,228     164       0      715   2,020  2,004  2,016  21,127    (254)  5,672   2,706   240      0    34   8,652    8,276  12,728 11,907  11,524   39.7% 39.4% 34.6%
04/06/03  18,213     161       0      927   2,071  2,012  2,016  21,372    (254)  4,797   2,658   231      0    35   7,721    8,092  13,905 12,015  11,921   34.9% 38.3% 34.6%
04/07/03  17,827     158       0      765   2,015  2,021  2,021  20,765     (26)  4,788   2,740   269      0    37   7,835    7,787  12,956 12,069  12,069   36.3% 36.9% 33.9%
04/08/03  17,764     159       0      690   2,050  2,025  2,015  20,663     709   5,080   2,718   329     16    43   8,155    7,594  11,799 12,144  12,035   37.7% 36.3% 33.5%
04/09/03  16,671     159       0      677   1,970  2,013  2,004  19,477     709   4,392   2,749   336     23    44   7,498    7,489  11,270 12,244  11,950   36.5% 36.8% 33.6%
04/10/03  15,705     160       0      739   1,919  1,985  1,989  18,523   1,850   5,190   2,749   337     27    44   8,293    7,626   8,380 11,754  11,593   42.7% 38.9% 34.8%
04/11/03  15,157     161       0      809   1,850  1,964  1,978  17,977   1,850   4,093   3,212   331     43    44   7,637    7,462   8,490 11,361  11,311   40.4% 39.8% 34.7%
04/12/03  15,130     162       0      836   1,874  1,947  1,976  18,002   1,850   3,098   3,405   246     10    40   6,778    7,249   9,374 10,882  11,150   36.1% 39.8% 34.4%
04/13/03  14,490     162       0      957   1,950  1,976  1,994  17,559    (839)  3,869   3,411   144     10    33   7,447    7,029  10,951 10,460  11,134   41.4% 39.3% 34.4%
04/14/03  16,139     163   3,468    3,306   2,216  2,044  2,033  25,292  (2,208)  4,175   3,410   176     29    38   7,771    7,122  19,729 11,428  11,748   29.9% 35.0% 34.7%
04/15/03  19,724     178   4,013    2,622   2,532  2,154  2,079  29,069  (2,208)    642   1,606   326      0    42   2,617    5,704  28,660 13,836  12,876    7.7% 23.7% 27.2%
04/16/03  24,883     193   3,784    1,736   2,734  2,290  2,129  33,330  (2,208)    649     858   308      0    39   1,855    3,780  33,683 17,038  14,176    4.5% 12.9% 17.3%
04/17/03  25,998     208   3,680    1,380   2,875  2,455  2,181  34,141  (2,208)    645     859   309      0    40   1,853    1,753  34,496 20,769  15,371    4.4%  5.4%  7.7%
04/18/03  23,375     223       0    1,207   3,005  2,641  2,236  27,810     531     645     860   315     21    43   1,841    1,505  25,438 23,190  15,931    5.3%  4.7%  6.5%
04/19/03  21,499     238       0    1,180   3,177  2,820  2,287  26,094   1,900     643     858   297      0    42   1,840    1,503  22,354 25,044  16,269    5.8%  5.1%  6.3%
04/20/03  20,432     253       0    1,079   3,204  2,985  2,341  24,968   1,900     599     859   295     76    36   1,713    1,488  21,355 26,531  16,523    5.5%  5.5%  6.1%
04/21/03  19,739     268       0    1,006   3,371  3,124  2,396  24,384   1,900     646     859   288      0    38   1,831    1,488  20,653 26,663  16,720    6.2%  5.8%  6.1%
04/22/03  18,979     265       0    1,012   3,499  3,221  2,443  23,755   1,215     639     860   281     46    13   1,746    1,488  20,793 25,539  16,905    6.1%  5.9%  6.0%
04/23/03  18,887     262       0    1,123   3,416  3,283  2,480  23,688     987     627     857   285     58     7   1,718    1,496  20,983 23,724  17,082    6.0%  6.1%  5.9%
04/24/03  18,359     259       0      992   3,307  3,288  2,504  22,917   1,037     615     858   286     46     6   1,719    1,485  20,161 21,677  17,210    6.2%  6.1%  5.8%
04/25/03  18,599     255   3,538    1,037   3,040  3,272  2,526  26,469     124     643     856   259     43     9   1,724    1,485  24,621 21,560  17,507    5.5%  5.9%  5.6%
04/26/03  20,350     252   3,496    1,613   3,070  3,272  2,552  28,781     124     639     859   282      0     3   1,784    1,490  26,873 22,206  17,867    5.2%  5.6%  5.6%
04/27/03  27,137     249   3,474    2,027   3,200  3,254  2,578  36,087     809     639     853   284     15     3   1,764    1,496  33,514 23,943  18,447    4.1%  4.9%  5.3%
04/28/03  34,462     246   2,742    1,722   3,244  3,229  2,605  42,416     859     645     857   286     93    17   1,711    1,497  39,846 26,685  19,211    3.3%  4.1%  5.1%
04/29/03  36,978     248   3,824    2,486   3,328  3,230  2,633  46,864  (3,249)    623     857   271     61    23   1,712    1,491  48,401 30,629  20,218    3.0%  3.4%  4.8%
04/30/03  38,500     250   4,657    2,755   3,418  3,231  2,655  49,580  (2,336)    625     857   246     61    20   1,686    1,487  50,230 34,807  21,218    2.9%  3.1%  4.5%


  Total  627,587   6,139  36,676   38,034  78,332 75,673 66,575 786,768   7,562  77,358  56,877 8,233    737   937 142,668  142,782 636,539 548,354434,601  618.9%651.2%607.2%
Average   20,920     205   1,223    1,268   2,611  2,522  2,219  26,226     252   2,579   1,896   274     25    31   4,756    4,759  21,218 18,278           20.6% 21.7% 20.2%