05/22/09
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                April 2009
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     (%)     (%)    (%)
04/01/09 10,054    220      81      725    1,158   1,142  1,100  12,238  1,750   2,256   2,614    0     65     5    4,810    5,003   5,678   6,841  5,678   39.3%   38.9%  34.1%
04/02/09 10,260    220      78      822    1,100   1,134  1,095  12,480  1,750   2,254   2,611    0     84     6    4,785    4,878   5,945   6,485  5,811   38.3%   38.5%  33.7%
04/03/09  9,725    220      76      882    1,090   1,128  1,099  11,993  1,750   2,253   2,017    0     83     11   4,198    4,668   6,045   6,199  5,889   34.9%   37.5%  33.1%
04/04/09 10,121    220      60      899    1,108   1,123  1,100  12,408  1,800   2,251   1,747    0     50     10   3,958    4,377   6,650   6,096  6,079   31.8%   35.0%  31.8%
04/05/09 10,213    220      66      875    1,100   1,122  1,104  12,474  1,800   2,253   1,746    0     50     12   3,960    4,089   6,714   6,185  6,206   31.7%   32.8%  30.3%
04/06/09 11,399    220      65      831    1,122   1,113  1,106  13,637  1,800   1,125   1,114    0     38     9    2,210    3,412   9,627   6,683  6,776   16.1%   26.2%  25.6%
04/07/09 12,035    220      65      794    1,115   1,106  1,106  14,229  1,800   1,125    859     0     52     5    1,936    2,740   10,493  7,307  7,307   13.6%   20.0%  20.6%
04/08/09 12,476    220      62      824    1,109   1,118  1,116  14,691   937    1,122   1,314    0     39     8    2,405    2,220   11,349  8,117  7,812   16.3%   15.3%  16.6%
04/09/09 13,074    220      69      883    1,185   1,144  1,133  15,431   481    1,490   1,841    0     70     7    3,268    2,583   11,682  8,937  8,242   21.1%   17.1%  19.1%
04/10/09 13,056    220      71      903    1,269   1,176  1,153  15,519   -204   1,992   1,841    0     48     8    3,793    3,200   11,930  9,778  8,611   24.4%   20.7%  23.6%
04/11/09 13,112    220      70      950    1,335   1,214  1,173  15,687   -432   1,998   2,531    0     25     12   4,516    3,898   11,603 10,485  8,883   28.7%   24.8%  28.4%
04/12/09 13,266    220      73      911    1,366   1,261  1,196  15,836   -432   1,996   2,743    0      0     9    4,748    4,367   11,520 11,172  9,103   29.9%   27.7%  31.6%
04/13/09 13,878    220      65      817    1,448   1,309  1,215  16,428   531    1,999   2,783    0     109    11   4,684    4,684   11,213 11,399  9,265   28.4%   29.0%  33.2%
04/14/09 13,923    220      60      775    1,450   1,350  1,228  16,428   987    1,995   2,167    0     44     10   4,128    4,561   11,313 11,516  9,412   25.1%   27.8%  31.7%
04/15/09 13,634    220      54      796    1,397   1,378  1,238  16,101  1,672   1,995   1,144    0     52     14   3,101    4,028   11,329 11,513  9,539   19.2%   24.3%  27.3%
04/16/09 13,567    220      53      804    1,383   1,394  1,247  16,027  1,900   1,998    851     0     47     12   2,814    3,384   11,313 11,460  9,650   17.5%   20.6%  22.6%
04/17/09 13,180    220      47      788    1,378   1,401  1,255  15,613  1,900    688     851     0     57     17   1,499    2,509   12,214 11,501  9,801    9.5%   15.4%  16.3%
04/18/09 12,845    220      35      760    1,387   1,406  1,263  15,247  1,900    691     853     0     50     22   1,515    1,977   11,832 11,533  9,914    9.8%   12.3%  12.6%
04/19/09 12,313    220      30      735    1,400   1,435  1,284  14,698  1,900    695     852     0     50     16   1,512    1,543   11,286 11,500  9,986   10.2%   9.8%   9.7%
04/20/09 11,657    220      28      727    1,651   1,499  1,314  14,283  1,900    692     850     0     58     23   1,506    1,544   10,877 11,452  10,031  10.4%   10.1%  9.7%
04/21/09 11,226    220     27      763     1,896  1,585  1,347  14,132   1,900   1,092    853     0     50    33    1,927   1,678   10,305  11,308 10,044   13.4%   11.3%  10.5%
04/22/09 11,065    220     25      806     2,002  1,673  1,377  14,118   1,900    994     854     0     68    34    1,814   1,778   10,404  11,176 10,060   12.6%   12.1%  11.2%
04/23/09 10,446    220     20      845     1,995  1,749  1,400  13,526   1,900    993     971     0     56    41    1,949   1,919    9,677  10,942 10,043   14.1%   13.4%  12.2%
04/24/09  9,618    220     19      874     1,910  1,830  1,423  12,641   1,950    491    1,016    0    107    45    1,445   1,773    9,246  10,518 10,010   11.1%   12.6%  11.3%
04/25/09  9,752    220     16      849     1,959  1,910  1,445  12,796   1,950    491     905     0     50    47    1,393   1,622    9,453  10,178  9,988   10.5%   11.9%  10.4%
04/26/09 10,560    220     18      828     1,959  1,966  1,468  13,585   1,950    488     858     0     50    45    1,340   1,416   10,295  10,037 10,000    9.5%   10.4%  9.2%
04/27/09 12,161    220     20      773     2,042  1,991  1,490  15,216   1,950    993     856     0     13    42    1,878   1,530   11,388  10,110 10,051   12.1%   10.8%  10.2%
04/28/09 12,056    220     21      703     2,070  1,996  1,510  15,070   2,000    839     859    76     67    54    1,761   1,631   11,309  10,253 10,096   10.8%   10.9%  10.9%
04/29/09 12,635    220     20      673     2,040  1,997  1,526  15,588   2,000    845     857    170    78    70    1,863   1,750   11,725  10,442 10,152   10.4%   11.1%  11.7%
04/30/09 12,611    220     19      668     2,001  2,002  1,540  15,519   2,000    842     855    183    60    66    1,886   1,699   11,633  10,721 10,202   10.5%   10.6%  11.3%


  Total  355,918   6,600   1,413   24,283  45,425 43,656 38,052 433,639  44,989  40,937  42,210   429  1,673   701  82,603   86,462 306,046 291,844264,644   571.3% 598.9% 600.4%
Average   11,864     220      47      809   1,514  1,455  1,268  14,455   1,500   1,365   1,407    14     56    23   2,753    2,882  10,202  9,728            19.0%  20.0%  20.0%