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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 SEP 03


    POOL ELEVATIONS  STORAGE     RELEASES       EVAP  INFLOW   RAINFALL
DAY      FT-NGVD     2400HR         DSF        INCHES   ADJ     INCHES
      0800    2400    AC-FT   POWER    TOTAL  8A TO 8A  DSF    7A TO  7A
                                                               DAM   BSN
PRIOR MONTH  761.51     7122
 1   761.52  761.52     7131      0        0   0.060      30   0.46  0.48
 2   761.52  761.62     7219      0        3   0.010      15   0.15  0.14
 3   761.62  761.61     7210      0        4   0.070       5   0.00  0.00
 4   761.61  761.59     7192      0        3   0.110       4   0.00  0.00
 5   761.59  761.57     7175      0        2   0.250       3   0.00  0.00

 6   761.56  761.55     7157      0        1   0.250       2   0.00  0.00
 7   761.54  761.53     7140      0        1   0.260       1   0.00  0.00
 8   761.52  761.51     7122      0        0   0.230       0   0.00  0.00
 9   761.50  761.49     7105      0        0   0.180       0   0.00  0.00
10   761.47  761.46     7078      0        0   0.240       0   0.00  0.00

11   761.45  761.99     7543      0       13   0.280     200   0.00  0.21
12   762.02  762.13     7677      0       46   0.040     150   1.75  1.52
13   762.53  762.63     8159      0      146   0.040     250   0.96  0.83
14   762.57  762.41     7947      0      144   0.050     100   0.13  0.10
15   762.34  762.20     7745      0       95   0.220      50   0.00  0.00

16   762.16  762.05     7600      0       61   0.230      20   0.00  0.00
17   762.01  761.94     7499      0       40   0.210      10   0.00  0.00
18   761.92  761.88     7447      0       29   0.250       5   0.00  0.00
19   761.85  761.82     7394      0       22   0.130       3   0.00  0.00
20   761.77  761.74     7324      0       15   0.320       2   0.00  0.00

21   761.73  761.78     7359      0       12   0.190       5   0.00  0.00
22   761.81  761.80     7377      0       18   0.040      15   0.30  0.47
23   761.79  761.77     7350      0       16   0.230      10   0.00  0.00
24   761.76  761.74     7324      0       13   0.170       5   0.00  0.00
25   761.72  761.70     7289      0       10   0.260       3   0.00  0.00

26   761.69  761.67     7263      0        8   0.160       2   0.00  0.00
27   761.66  761.64     7236      0        6   0.260       1   0.00  0.00
28   761.63  761.60     7201      0        4   0.210       0   0.00  0.00
29   761.60  761.59     7192      0        3   0.190       0   0.00  0.00
30   761.59  761.59     7192      0        3   0.020       0   0.10  0.15

TOTAL                             0      719   5.160     891   3.85  3.90
AVERAGE   761.77                  0       24              30 NORMAL= 3.98

MAXIMUM   762.67        8197   DATE=13    TOP CONSERVATION POOL    761.50
MINIMUM   761.45        7070   DATE=11    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=     1767 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION