01/28/11
                                                                U.S. Bureau of Reclamation - Central Valley Operations Office
                                                                        Delta Outflow Computation (values in c.f.s.)

                                                                                December 2010
Estimated numbers are in bold print
                                         DELTA INFLOW                                           DELTA EXPORTS                               OUTFLOW INDEX          EXPORT/INFLOW  COA
         Sacto R          Yolo + East Side        S. Joaquin Riv Total          Clifton         Contra Byron        Total    3-day                                                USBR
        @Freeport  SRTP    Misc   Streams          7-day Monthly Delta           Court   Tracy  Costa Bethany NBA   Delta     Avg     NDOI   7-day Monthly  Daily   3 Day 14 Day Account
  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     (%)     (%)    (%)  Balance
12/01/10 19,309    220      32      888    1,953   1,880  1,958  22,402   -282   5,285   4,088    39     5     65   9,471    9,624   13,213 11,364  13,213  41.8%   45.6%  54.3% 14396
12/02/10 18,191    220      31      881    1,958   1,944  2,121  21,281   -282   6,384   4,108    39     6     61   10,587   9,928   10,976 10,768  12,095  49.3%   45.7%  54.3% 149396
12/03/10 15,920    220      30      894    2,284   2,216  2,659  19,348  2,000   6,375   4,095    76     3     56   10,599  10,112   6,749  10,312  10,313  54.1%   48.1%  53.9% 149396
12/04/10 16,320    220      36      882    3,735   2,609  3,141  21,193  2,050   6,386   4,109    57     0     54   10,607  10,486   8,536  10,243  9,869   49.5%   50.9%  54.3% 149396
12/05/10 18,410    220      38      897    4,587   3,065  3,520  24,152   731    6,392   4,102    9      0     51   10,555  10,487   12,866 10,595  10,468  43.5%   48.6%  52.4% 149396
12/06/10 19,637    220      43      977    5,037   3,542  3,807  25,914  -1,551  6,389   4,105    12     7     44   10,543  10,495   16,922 11,570  11,544  40.5%   44.2%  50.7% 149396
12/07/10 19,871    220     128     1,251   5,242   4,019  4,019  26,712  -1,958  6,394   4,118    14     2     38   10,563  10,500   18,107 12,481  12,481  39.3%   41.0%  49.2% 149396
12/08/10 22,234    220     206     1,392   5,288   4,460  4,148  29,340  -1,958  6,394   4,120    9      4     38   10,557  10,507   20,741 13,557  13,514  35.8%   38.4%  47.4% 149396
12/09/10 27,851    220     124     1,186   5,049   4,806  4,209  34,430  -3,784  6,392   4,135    9      2     39   10,573  10,518   27,640 15,937  15,083  30.6%   34.9%  45.4% 149396
12/10/10 30,390    220     112     1,189   4,705   4,960  4,269  36,616  -2,364  6,392   4,103    12     2     34   10,539  10,512   28,441 19,036  16,419  28.7%   31.4%  43.2% 149396
12/11/10 30,629    220     104     1,429   4,809   4,992  4,319  37,191   -82    6,216   4,136    8      2     30   10,388  10,458   26,885 21,657  17,371  27.8%   29.0%  40.9% 149396
12/12/10 29,818    220      93     1,707   4,815   4,916  4,335  36,653   374    5,969   4,139    12     2     36   10,154  10,319   26,125 23,552  18,100  27.6%   28.0%  38.4% 149396
12/13/10 28,339    220      85     1,683   4,505   4,767  4,324  34,832   374    6,042   4,134    13     4     39   10,223  10,212   24,234 24,596  18,572  29.2%   28.2%  36.5% 149396
12/14/10 26,804    220      78     1,601   4,198   4,588  4,303  32,901  2,200   6,032   4,092    18     0     40   10,183  10,136   20,518 24,941  18,711  30.8%   29.1%  35.2% 149396
12/15/10 32,757    220      76     1,665   4,032   4,458  4,292  38,750   374    6,393   4,103    19     2     30   10,543  10,265   27,832 25,954  19,319  27.1%   28.9%  34.3% 149396
12/16/10 35,813    220      95     2,964   4,140   4,447  4,314  43,232   374    6,392   4,124    17     2     9    10,539  10,379   32,319 26,622  20,132  24.3%   27.1%  32.9% 149396
12/17/10 46,982    220      87     2,723   4,632   4,535  4,379  54,644   374    6,392   4,102    8      2     0    10,500  10,502   43,770 28,812  21,522  19.2%   23.1%  30.8% 149396
12/18/10 53,635    220      86     2,608   5,424   4,732  4,479  61,973  -1,958  6,391   4,072    8      0     5    10,475  10,491   53,456 32,608  23,296  16.9%   19.7%  28.4% 149396
12/19/10 52,802    220     120     6,491   6,190   5,128  4,627  65,823  -3,099  6,392   4,069    3      2     0    10,462  10,472   58,460 37,227  25,147  15.9%   17.2%  26.2% 149396
12/20/10 59,725    220     344    10,436   7,283   5,749  4,823  78,008  -4,925  6,397   4,141    11     3     0    10,547  10,487   72,386 44,106  27,509  13.5%   15.3%  24.0% 149396
12/21/10 68,057    220    3,042    8,414   8,542   6,536  5,047  88,275  -4,975  6,390   4,003    11     0     7    10,410  10,464   82,839 53,009  30,144  11.8%   13.5%  21.8% 149396
12/22/10 72,267    220    9,951    5,477   9,538   7,434  5,292  97,453  -5,203  6,391   3,797    15     2     0    10,202  10,373   92,454 62,241  32,976  10.5%   11.8%  19.6% 149396
12/23/10 72,004    220    7,784    5,122   10,429  8,288  5,523  95,559  -4,340  7,522   3,788    8      2     3    11,318  10,631   88,581 70,278  35,394  11.8%   11.3%  18.6% 149396
12/24/10 66,107    220    3,126    4,702   10,612  9,027  5,735  84,767  -3,199  7,528   3,777    6      0     5    11,315  10,934   76,651 74,975  37,113  13.3%   11.8%  18.0% 149396
12/25/10 67,093    220     777     4,211   10,596  9,623  5,920  82,897   402    8,657   3,775    4      0     0    12,437  11,683   70,058 77,347  38,430  15.0%   13.3%  18.3% 149396
12/26/10 65,508    220     202     4,113   10,358 10,055  6,088  80,401  -3,249  8,657   3,775    2      0     0    12,434  12,057   71,216 79,169  39,691  15.5%   14.6%  18.0% 149396
12/27/10 64,631    220     322     5,394   10,308 10,359  6,258  80,875  -3,071  8,652   4,131    7      6     1    12,785  12,550   71,160 78,994  40,857  15.8%   15.4%  17.8% 149396
12/28/10 63,202    220     406     4,501   10,675 10,567  6,427  79,004  -1,930  8,659   4,153    11     2     6    12,826  12,676   68,107 76,890  41,830  16.2%   15.8%  17.2% 149396
12/29/10 61,042    220     286     4,199   10,992 10,648  6,585  76,739  -3,805  8,657   4,074    10     0     0    12,742  12,776   67,803 73,368  42,726  16.6%   16.2%  16.7%
12/30/10 60,472    220    1,931    9,330   10,992 10,824  6,760  82,945  -5,681  8,527   4,050    8      0     7    12,593  12,707   76,033 71,575  43,836  15.2%   16.0%  16.0%
12/31/10 63,378    220     734     6,028   11,846 11,224  6,974  82,206  -2,080  8,651   4,055    6      4     0    12,708  12,672   71,578 70,851  44,731  15.5%   15.7%  15.6%

  Total 1,329,198  6,820  30,509  105,235 204,754 186,398144,6551,676,51(50,521)213,693 125,574   478     63   697 340,379  336,410 1,386,651,204,6762,405   802.4% 829.9%1030.2%
Average   42,877     220     984    3,395   6,605  6,013  4,666  54,081  (1,630)  6,893   4,051    15      2    22  10,980   10,852  44,731 38,859  24,594    25.9%  26.8%  33.2%