11/18/10
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                September 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     (%)     (%)    (%)
09/01/10 14,185    210     580      272    1,369   1,185  1,290  16,616  3,200   6,182   4,111    33    52    113   10,387  10,218   3,029   3,060  3,029   61.6%   61.2%  58.1%
09/02/10 14,486    210     585      286    1,290   1,226  1,302  16,857  3,200   6,697   4,103    35    58    115   10,892  10,568   2,765   3,051  2,897   63.7%   63.2%  60.6%
09/03/10 14,850    210     584      292    1,313   1,267  1,313  17,249  3,150   6,695   4,114    24    49    106   10,890  10,634   3,209   3,126  3,001   62.4%   62.6%  61.3%
09/04/10 15,008    210     588      302    1,336   1,292  1,291  17,444  3,100   6,699   4,108    21    50    110   10,888  10,805   3,456   3,110  3,115   61.7%   62.6%  62.7%
09/05/10 15,275    210     576      335    1,226   1,300  1,283  17,622  3,050   6,705   4,103    23    50    103   10,884  10,808   3,688   3,186  3,229   61.0%   61.7%  62.9%
09/06/10 15,669    210     588      347    1,252   1,309  1,299  18,066  3,000   6,690   4,104    21    50    105   10,870  10,803   4,196   3,263  3,391   59.5%   60.7%  63.0%
09/07/10 15,861    210     598      327    1,378   1,296  1,296  18,374  2,950   6,992   4,104    26    40    105   11,187  10,900   4,237   3,512  3,512   60.2%   60.2%  63.4%
09/08/10 15,536    210     565      302    1,275   1,295  1,294  17,888  2,900   6,993   4,105    26    32     96   11,189  10,996   3,799   3,622  3,548   61.9%   60.5%  63.9%
09/09/10 15,512    210     569      285    1,282   1,301  1,301  17,858  2,900   7,177   4,096    20    35    113   11,372  11,156   3,586   3,739  3,552   62.9%   61.6%  64.6%
09/10/10 16,397    210     565      298    1,359   1,315  1,315  18,829  2,850   6,832   4,131    20    33    114   11,064  11,112   4,915   3,983  3,688   58.0%   60.9%  63.8%
09/11/10 16,521    210     541      306    1,434   1,390  1,354  19,012  2,800   6,905   4,102    17    35    112   11,101  11,081   5,111   4,219  3,818   57.7%   59.5%  63.0%
09/12/10 17,089    210     533      306    1,747   1,512  1,417  19,885  2,750   7,177   4,115    19    13    104   11,403  11,087   5,732   4,511  3,977   56.7%   57.5%  62.2%
09/13/10 17,358    210     560      320    2,111   1,669  1,498  20,559  2,700   7,179   4,092    9     32    109   11,357  11,190   6,502   4,840  4,171   54.7%   56.3%  61.9%
09/14/10 18,120    210     546      321    2,473   1,846  1,571  21,670  2,650   7,171   4,091    7     42    106   11,332  11,275   7,688   5,333  4,422   51.8%   54.3%  61.0%
09/15/10 18,750    210     281      314    2,517   2,030  1,638  22,072  2,600   7,167   4,078    6     49    106   11,308  11,259   8,164   5,957  4,672   50.7%   52.3%  59.6%
09/16/10 18,886    210     137      310    2,572   2,169  1,681  22,115  2,600   6,494   4,064    9     37     95   10,625  11,022   8,890   6,715  4,936   47.6%   50.0%  57.2%
09/17/10 18,772    210      58      304    2,330   2,272  1,709  21,674  2,550   5,993   4,077    11    49     93   10,125  10,624   8,999   7,298  5,175   46.2%   48.2%  54.2%
09/18/10 18,223    210      36      287    2,152   2,316  1,728  20,908  2,500   5,997   4,088    7     35     91   10,148  10,238   8,260   7,748  5,346   48.1%   47.3%  51.6%
09/19/10 17,968    210      32      276    2,056   2,305  1,744  20,542  2,450   5,991   4,076    16    35     88   10,135  10,074   7,957   8,066  5,483   48.8%   47.7%  50.3%
09/20/10 17,985    210      31      297    2,032   2,232  1,755  20,555  2,450   5,493   3,664    17     0     95   9,268    9,770   8,837   8,399  5,651   44.5%   47.2%  48.4%
09/21/10 17,583    210      29      311    1,962   2,135  1,759  20,095  2,400   4,988   3,686    30    23     94   8,775    9,299   8,920   8,575  5,807   43.0%   45.5%  45.8%
09/22/10 17,132    210      27      330    1,842   2,012  1,757  19,541  2,350   5,498   4,178    22    40    101   9,760    9,169   7,431   8,471  5,881   49.3%   45.6%  44.9%
09/23/10 17,198    210      0       308    1,713   1,910  1,751  19,429  2,350   5,108   4,066    16    35    101   9,256    9,175   7,823   8,318  5,965   47.0%   46.4%  44.6%
09/24/10 16,980    210      0       293    1,612   1,832  1,745  19,095  2,300   6,012   4,088    17    40     97   10,174   9,650   6,621   7,978  5,992   52.7%   49.7%  46.9%
09/25/10 16,687    210      0       298    1,604   1,764  1,738  18,799  2,250   5,790   4,067    16    40     96   9,927    9,710   6,622   7,744  6,018   52.2%   50.6%  47.2%
09/26/10 16,286    210      0       310    1,586   1,703  1,733  18,392  2,250   5,993   4,135    16    40    100   10,204  10,028   5,938   7,456  6,014   54.9%   53.2%  49.0%
09/27/10 15,580    210      0       310    1,605   1,660  1,730  17,705  2,200   5,996   4,102    17    55    100   10,160  10,028   5,345   6,957  5,990   56.7%   54.6%  49.5%
09/28/10 15,157    210      0       313    1,656   1,625  1,726  17,336  2,200   6,474   4,138    19    44    102   10,690  10,280   4,446   6,318  5,935   61.0%   57.5%  51.5%
09/29/10 14,654    210      0       304    1,602   1,604  1,720  16,770  2,150   6,493   4,137    23    43     90   10,699  10,447   3,921   5,816  5,865   63.1%   60.2%  53.3%
09/30/10 14,321    210      0       317    1,560   1,591  1,713  16,408  2,150   6,496   4,143    18    39    113   10,731  10,627   3,527   5,203  5,787   64.6%   62.9%  55.5%


  Total  494,029   6,300   8,609    9,181  51,246 50,363 46,449 569,365  78,950 192,079 122,267   555  1,178 3,077 316,800  314,034 173,615 169,574139,865  1664.4%1661.7%1681.9%
Average   16,468     210     287      306   1,708  1,679  1,548  18,979   2,632   6,403   4,076    18     39   103  10,560   10,468   5,787  5,652   4,662    55.5%  55.4%  56.1%