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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 FEB 02


    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  762.55     8082
 1   762.48  762.23     7773      0      115   0.030     100   0.00  0.00
 2   762.15  762.01     7562      0       61   0.070      50   0.00  0.00
 3   761.96  761.87     7438      0       33   0.090      20   0.00  0.00
 4   761.84  761.77     7350      0       19   0.070      20   0.00  0.00
 5   761.76  761.73     7315      0       13   0.070      10   0.04  0.03

 6   761.72  761.69     7280      0       10   0.000      10   0.16  0.14
 7   761.69  761.67     7263      0        8   0.000       5   0.12  0.12
 8   761.67  761.64     7236      0        6   0.040       0   0.00  0.00
 9   761.63  761.62     7219      0        5   0.200       0   0.01  0.01
10   761.61  761.58     7184      0        3   0.190       0   0.00  0.00

11   761.57  761.52     7131      0        1   0.090       0   0.00  0.00
12   761.55  761.54     7149      0        1   0.130       0   0.00  0.00
13   761.54  761.53     7140      0        1   0.170       0   0.00  0.00
14   761.53  761.52     7131      0        0   0.100       0   0.00  0.00
15   761.52  761.51     7122      0        0   0.150       0   0.03  0.02

16   761.51  761.50     7114      0        0   0.090       0   0.04  0.04
17   761.50  761.49     7105      0        0   0.140       0   0.00  0.00
18   761.49  761.48     7096      0        0   0.170       0   0.00  0.00
19   761.52  761.55     7157      0        0   0.130      10   0.68  0.54
20   761.55  761.55     7157      0        1   0.130       5   0.01  0.01

21   761.54  761.53     7140      0        1   0.130       4   0.00  0.00
22   761.53  761.51     7122      0        0   0.160       0   0.00  0.00
23   761.51  761.50     7114      0        0   0.150       0   0.00  0.00
24   761.49  761.49     7105      0        0   0.290       0   0.00  0.00
25   761.49  761.48     7096      0        0   0.250       0   0.00  0.00

26   761.48  761.43     7052      0        0   0.120       0   0.00  0.00
27   761.44  761.43     7052      0        0   0.120       0   0.00  0.00
28   761.43  761.43     7052      0        0   0.100       0   0.00  0.00

TOTAL                             0      280   3.380     234   1.09  0.91
AVERAGE   761.60                  0       10               8 NORMAL= 1.63

MAXIMUM   762.55        8082   DATE= 1    TOP CONSERVATION POOL    761.50
MINIMUM   761.42        7043   DATE=28    TOP FLOOD POOL           784.00

WATER SUPPLY:  WITHDRAWN      0 AC-FT, RELEASED      0 AC-FT

                      INFLOW VOLUME=      464 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION