05/09/08
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

Preliminary Data - Subject to Change                                            May 2008
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     (%)     (%)    (%)
05/01/08  8,241    210     715      696    2,997   3,099  2,987  12,859  2,000    803     537    177    85     85   1,518    1,467   9,341   9,738  9,341    9.8%   11.4%  9.9%
05/02/08  8,138    209     716      669    2,987   3,074  3,008  12,719  2,000    696     835    189    60     88   1,748    1,465   8,970   9,407  9,156   11.6%   11.2%  10.0%
05/03/08 8,127     207     689     633     3,029  3,057  3,019  12,685   2,050    695     837    206    50    86    1,774   1,468    8,862  9,147   9,058   11.7%   11.0%  10.2%
05/04/08 7,884     206     676     620     3,041  3,036  3,029  12,427   2,100    690     838    217    50    88    1,782   1,531    8,545  8,918   8,929   11.9%   11.7%  10.9%
05/05/08 7,265     204     663     623     3,057  3,022  3,031  11,812   2,100    688     842    215    85    84    1,744   1,530    7,968  8,670   8,737   12.2%   11.9%  11.1%
05/06/08 7,414     203     656     641     3,043  3,040  3,047  11,957   2,100    690     844    209    53    84    1,774   1,531    8,083  8,579   8,628   12.4%   12.2%  11.3%
05/07/08 8,020     201     655     650     3,126  3,063  3,063  12,652   2,150    686     843    208    67    90    1,761   1,531    8,742  8,644   8,644   11.6%   12.0%  11.4%
05/08/08 8,434     200     643     639     3,155  3,097  3,084  13,071   2,150    692     842    203    56    90    1,772   1,533    9,149  8,617   8,707   11.3%   11.7%  11.6%
05/09/08 8,012     200     657     635     3,231                12,735
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  Total   71,535   1,840   6,070    5,806  27,666 24,487 24,267 112,917  16,650   5,640   6,420 1,624    506   695  13,873   12,056  69,659 71,720  71,200    92.4%  93.2%  86.3%
Average    7,948     204     674      645   3,074  3,061  3,033  12,546   2,081     705     802   203     63    87   1,734    1,507   8,707  8,965            11.5%  11.6%  10.8%