06/23/10
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                May 2010
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     (%)     (%)    (%)
05/01/10 24,112    230     284     2,806   5,081   5,358  4,968  32,513  1,087    694     831    105    50     50   1,630    1,524   29,796 27,520  29,796   4.5%   4.8%   4.8%
05/02/10 24,601    230     729     2,624   4,968   5,273  4,984  33,152  1,087    693     832    110    50     56   1,642    1,525   30,423 27,068  30,109   4.4%   4.6%   4.8%
05/03/10 23,915    230     804     2,530   5,000   5,178  4,980  32,479  1,137    691     829    139    50     56   1,665    1,524   29,677 27,321  29,965   4.5%   4.5%   4.8%
05/04/10 22,338    230    1,432    2,471   4,973   5,062  4,919  31,444  2,100    691     827    158    148    59   1,588    1,521   27,756 27,778  29,413   4.4%   4.4%   4.7%
05/05/10 20,871    230    1,694    2,458   4,736   5,030  4,967  29,989  2,100    709     825    158    50     56   1,698    1,524   26,191 28,159  28,769   4.9%   4.6%   4.7%
05/06/10 19,760    230    1,069    2,508   5,156   5,064  5,062  28,723  2,100    687     823    158    107    63   1,624    1,521   24,999 28,020  28,140   4.9%   4.7%   4.7%
05/07/10 19,853    230     557     2,501   5,537   5,146  5,146  28,678  2,150    693     822    141    90     73   1,640    1,520   24,888 27,676  27,676   5.0%   4.9%   4.7%
05/08/10 19,599    230     635     2,423   5,655   5,244  5,210  28,542  2,150    699     823    119    50     80   1,671    1,516   24,721 26,951  27,306   5.2%   5.0%   4.8%
05/09/10 18,220    230     571     2,333   5,651   5,353  5,271  27,005  2,200    695     824    110    50     76   1,654    1,519   23,151 25,912  26,845   5.4%   5.2%   4.9%
05/10/10 17,084    230     496     2,309   5,760   5,490  5,337  25,879  1,744    693     826    108    71     66   1,623    1,520   22,513 24,888  26,411   5.6%   5.4%   5.0%
05/11/10 16,007    230     531     2,310   5,933   5,643  5,380  25,011  1,337    681     820    108    76     52   1,586    1,513   22,088 24,079  26,018   5.7%   5.6%   5.0%
05/12/10 15,889    230     543     2,415   5,812   5,710  5,400  24,889  1,387    692     823    100    152    34   1,498    1,512   22,004 23,480  25,684   5.5%   5.6%   4.9%
05/13/10 15,335    230     528     2,286   5,619   5,694  5,402  23,998  1,387    693     825    102    108    64   1,576    1,511   21,035 22,914  25,326   5.9%   5.7%   4.9%
05/14/10 15,240    230     561     2,231   5,430   5,609  5,378  23,692  1,437    693     826    108    107    75   1,595    1,518   20,660 22,310  24,993   6.0%   5.8%   4.9%
05/15/10 14,541    230     608     2,231   5,055   5,472  5,332  22,665  1,894     -2    1,462   108    96     88   1,560    1,499   19,212 21,523  24,608   6.0%   5.9%   5.1%
05/16/10 13,642    230     665     2,263   4,697   5,321  5,293  21,497  2,400    -11    1,468   119     0     89   1,665    1,479   17,432 20,706  24,159   6.8%   6.2%   5.3%
05/17/10 12,874    230     716     2,324   4,698   5,121  5,248  20,842  2,450    690     826    132    234    94   1,507    1,478   16,885 19,902  23,731   6.1%   6.3%   5.3%
05/18/10 13,253    230     748     2,357   4,539   4,900  5,194  21,127  2,450    694     825    118    96     85   1,625    1,497   17,052 19,183  23,360   6.7%   6.6%   5.5%
05/19/10 13,675    230     751     2,400   4,264   4,695  5,140  21,320  2,500    495     823    135    103    77   1,426    1,451   17,394 18,524  23,046   5.7%   6.2%   5.3%
05/20/10 14,046    230     748     2,344   4,182   4,518  5,093  21,550  2,550     21    1,488   124    97     79   1,615    1,448   17,385 18,003  22,763   6.6%   6.3%   5.6%
05/21/10 14,514    230     744     2,243   4,193   4,404  5,053  21,924  2,550     29    1,512   115    71     84   1,670    1,456   17,704 17,580  22,522   6.7%   6.3%   5.8%
05/22/10 14,346    230     736    2,204    4,253  4,336  5,015  21,769   2,600    693     860    132   101    80    1,664   1,534   17,505  17,337 22,294    6.7%   6.6%   6.3%
05/23/10 14,819    230     723    2,040    4,226  4,324  4,998  22,038   2,650    649     858    124   101    83    1,613   1,534   17,775  17,386 22,098    6.4%   6.6%   6.3%
05/24/10 14,540    230     708    1,863    4,610  4,399  5,001  21,951   2,700    683     859    143    16    76    1,744   1,534   17,507  17,474 21,906    6.9%   6.7%   6.5%
05/25/10 14,608    230     667    1,745    5,068  4,494  4,998  22,318   2,750    677     860    141    59    69    1,686   1,528   17,882  17,593 21,745    6.6%   6.6%   6.6%
05/26/10 15,007    230     670    1,592    4,923  4,573  4,988  22,422   2,065   1,996    867    124    4     65    3,049   1,980   17,308  17,581 21,575   12.8%   8.8%   8.8%
05/27/10 15,123    230     704    1,557    4,741  4,649  4,978  22,355   2,115   1,994   2,825   123    79    73    4,937   3,073   15,303  17,283 21,342   21.2%   13.5%  13.8%
05/28/10 15,919    230     722    1,909    4,723  4,696  4,964  23,503    796    2,992   2,829   120    74    71    5,939   4,501   16,768  17,150 21,179   24.5%   19.5%  20.3%
05/29/10 18,186    230     737    2,159    4,583  4,714  4,943  25,895    846    3,487   2,824   111    63    73    6,433   5,651   18,616  17,308 21,091   24.1%   23.3%  25.2%
05/30/10 20,602    230     715    2,000    4,348  4,650  4,916  27,895    896    3,467   2,837   111    73    76    6,417   6,146   20,582  17,709 21,074   22.3%   23.6%  26.8%
05/31/10 22,448    230     664    1,940    4,161  4,507  4,889  29,443   1,631   3,497   2,829   142    68    81    6,480   6,314   21,332  18,256 21,082   21.3%   22.5%  26.9%

  Total  534,967   7,130  22,460   69,376 152,575 154,626158,444786,508  59,247  31,755  38,409 3,849  2,496 2,203  73,720   65,370 653,541 674,575766,027   269.3% 252.6% 252.9%
Average   17,257     230     725    2,238   4,922  4,988  5,111  25,371   1,911   1,024   1,239   124     81    71   2,378    2,109  21,082 21,760  24,711     8.7%   8.1%   8.2%