01/15/10
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                December 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     (%)     (%)    (%)
12/01/09  8,907    210      3       319    1,351   1,298  1,275  10,790  1,544   3,493   1,981   237     0     48   5,759    5,473   3,487   3,925  3,487   50.7%   48.4%  48.9%
12/02/09  8,557    211      6       317    1,275   1,290  1,253  10,366  1,544   2,947   1,987   235     0     48   5,218    5,294   3,605   3,861  3,546   47.6%   49.3%  47.2%
12/03/09  8,446    213      5       317    1,231   1,286  1,254  10,212  2,000   2,000   1,989   231    37     45   4,227    4,799   3,984   3,894  3,692   38.7%   45.8%  42.8%
12/04/09  8,487    214      5       313    1,257   1,287  1,259  10,276  2,050   1,991   1,985   235    16     40   4,236    4,300   3,990   3,915  3,767   38.5%   41.6%  38.4%
12/05/09  8,680    216      5       313    1,272   1,284  1,260  10,486  2,100   1,988   1,988   235     0     38   4,250    3,981   4,136   3,971  3,841   37.9%   38.4%  35.5%
12/06/09  8,524    217      9       311    1,267   1,273  1,260  10,328  2,100   1,999   1,988   215    20     38   4,219    3,980   4,009   3,852  3,869   38.4%   38.3%  36.0%
12/07/09  8,263    219      9       312    1,260   1,262  1,262  10,063  2,150   1,997   1,982   180     0     31   4,191    3,981   3,722   3,848  3,848   39.5%   38.6%  36.6%
12/08/09  9,114    220      7       334    1,270   1,267  1,268  10,945   324    1,996   1,973   116    14     32   4,104    3,979   6,516   4,280  4,181   36.1%   38.0%  36.8%
12/09/09  9,668    220      9       329    1,312   1,273  1,268  11,538   324    1,928   1,965   129    14     30   4,039    3,948   7,175   4,790  4,514   33.6%   36.3%  36.6%
12/10/09  9,317    220      12      319    1,270   1,271  1,266  11,138   374    1,962   1,965   118     0     34   4,079    3,930   6,685   5,176  4,731   35.3%   35.0%  36.4%
12/11/09  8,952    220      2       318    1,244   1,270  1,266  10,736   146    2,444   1,970    79    31     32   4,495    4,078   6,095   5,477  4,855   40.8%   36.5%  37.8%
12/12/09  8,825    220      12      338    1,267   1,277  1,270  10,662   -767   2,481   1,976    77     6     17   4,545    4,266   6,884   5,869  5,024   41.7%   39.2%  39.5%
12/13/09  9,774    220      31      345    1,314   1,295  1,279  11,684   -995   2,893   1,985    65     0     15   4,958    4,583   7,721   6,400  5,232   41.8%   41.5%  42.6%
12/14/09 11,990    220      64      654    1,386   1,313  1,287  14,314  -4,418  3,997   1,979    85    23     17   6,054    5,104   12,678  7,679  5,763   41.6%   41.7%  46.5%
12/15/09 12,892    220      51      573    1,395   1,324  1,294  15,131  -4,418  4,486   1,952    94     0     14   6,545    5,764   13,004  8,606  6,246   42.5%   42.0%  51.0%
12/16/09 13,005    220      30      434    1,394   1,346  1,302  15,083  -4,190  4,497   2,561    81    24     15   7,129    6,491   12,144  9,316  6,615   46.6%   43.6%  55.7%
12/17/09 12,853    220      25      387    1,420   1,376  1,311  14,905  -3,505  4,494   2,934    83    10     19   7,520    6,975   10,890  9,917  6,866   49.8%   46.3%  58.3%
12/18/09 12,427    220      32      372    1,454   1,403  1,319  14,505  -1,501  4,490   2,935   101     0     15   7,540    7,304   8,466  10,255  6,955   51.2%   49.2%  59.5%
12/19/09 13,089    220      29      381    1,456   1,421  1,326  15,175  1,922   4,496   2,932    97     0     16   7,541    7,427   5,713  10,088  6,890   48.9%   50.0%  59.0%
12/20/09 14,067    220      22      372    1,441   1,423  1,329  16,122  1,922   4,485   2,928    95     0     25   7,533    7,422   6,667   9,937  6,879   46.0%   48.6%  57.1%
12/21/09 13,203    220      23      361    1,404   1,421  1,332  15,211  1,872   3,996   2,925   106    21     19   7,025    7,254   6,314   9,028  6,852   45.4%   46.7%  54.2%
12/22/09 12,082    220     22      372     1,376  1,414  1,332  14,072   1,644   3,490   2,931   90     0     25    6,536   6,918    5,893  8,012   6,808   45.6%   45.7%  50.9%
12/23/09 12,432    220     22      370     1,347  1,400  1,332  14,391   1,594   3,511   2,840   103    0     22    6,477   6,564    6,320  7,180   6,787   44.1%   45.0%  47.5%
12/24/09 11,951    220     25      450     1,325  1,379  1,331  13,971   1,594   4,488   2,243   80     12    25    6,823   6,501    5,554  6,418   6,736   48.1%   45.9%  46.4%
12/25/09 11,898    220     22      412     1,305  1,354  1,329  13,857   1,544   3,989   1,980   67     0     25    6,062   6,350    6,252  6,102   6,716   43.1%   45.1%  44.6%
12/26/09 11,585    220     19      397     1,280  1,328  1,326  13,501   1,544   3,989   1,989   77     0     20    6,075   6,226    5,882  6,126   6,684   44.3%   45.2%  43.1%
12/27/09 10,734    220     18      389     1,258  1,308  1,324  12,619   1,950   3,997   1,990   63     0     25    6,075   5,978    4,594  5,830   6,607   47.5%   44.9%  41.3%
12/28/09 10,266    220     20      385     1,268  1,294  1,322  12,159   1,494   3,994   1,991   71     28    25    6,054   5,984    4,611  5,587   6,535   49.0%   46.8%  41.7%
12/29/09  9,872    220     22      382     1,278  1,283  1,321  11,774    987    3,498   1,993   70     0     26    5,587   5,822    5,200  5,488   6,489   46.6%   47.7%  41.2%
12/30/09  9,862    220     19      383     1,269  1,274  1,318  11,753    709    3,475   1,290   77     0     16    4,857   5,414    6,187  5,469   6,479   40.5%   45.4%  39.0%
12/31/09  9,774    220     14      382     1,258  1,265  1,316  11,648    659    2,997   1,007   67     0     18    4,088   4,753    6,901  5,661   6,493   34.4%   40.5%  34.9%

  Total  329,496   6,780     594   11,641  40,904 40,958 40,192 389,415  14,292 102,491  67,135 3,659    255   812 173,842  170,841 201,281 195,959173,988  1336.0%1347.2%1387.1%
Average   10,629     219      19      376   1,319  1,321  1,297  12,562     461   3,306   2,166   118      8    26   5,608    5,511   6,493  6,321   5,613    43.1%  43.5%  44.7%