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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 SEP 97


    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  761.65     7245
 1   761.65  761.64     7236      0        6   0.110       5   0.40  0.62
 2   761.64  761.62     7219      0        5   0.160       5   0.00  0.00
 3   761.62  761.60     7201      0        4   0.240       0   0.00  0.00
 4   761.59  761.57     7175      0        2   0.120       0   0.00  0.01
 5   761.57  761.55     7157      0        1   0.180       0   0.00  0.00

 6   761.54  761.53     7140      0        1   0.240       0   0.00  0.00
 7   761.52  761.51     7122      0        0   0.220       0   0.00  0.00
 8   761.50  761.49     7105      0        0   0.260       0   0.00  0.00
 9   761.49  761.47     7087      0        0   0.220       0   0.00  0.00
10   761.47  761.44     7061      0        0   0.230       0   0.00  0.00

11   761.44  761.42     7043      0        0   0.240       0   0.00  0.00
12   761.42  761.39     7017      0        0   0.220       0   0.00  0.00
13   761.39  761.40     7026      0        0   0.290       0   0.50  0.19
14   761.40  761.39     7017      0        0   0.100       0   0.05  0.10
15   761.38  761.37     6999      0        0   0.250       0   0.00  0.00

16   761.37  761.36     6991      0        0   0.290       0   0.00  0.00
17   761.35  761.33     6964      0        0   0.360       0   0.00  0.00
18   761.33  761.31     6947      0        0   0.120       0   0.00  0.06
19   761.31  761.30     6938      0        0   0.290       0   0.05  0.05
20   761.30  761.27     6912      0        0   0.330       0   0.00  0.00

21   761.26  761.24     6885      0        0   0.230       0   0.00  0.00
22   761.23  761.22     6868      0        0   0.090       0   0.00  0.00
23   761.32  761.57     7175      0        0   0.100     100   1.45  1.44
24   761.60  761.62     7219      0        3   0.010      25   0.05  0.31
25   761.63  761.63     7228      0        5   0.030      10   0.04  0.11

26   761.62  761.61     7210      0        4   0.120       0   0.00  0.00
27   761.61  761.59     7192      0        3   0.160       0   0.00  0.00
28   761.59  761.57     7175      0        2   0.230       0   0.00  0.00
29   761.57  761.56     7166      0        1   0.170       0   0.00  0.01
30   761.55  761.54     7149      0        1   0.220       0   0.00  0.00

TOTAL                             0       40   5.830     145   2.54  2.90
AVERAGE   761.47                  0        1               5 NORMAL= 3.98

MAXIMUM   761.65        7245   DATE= 1    TOP CONSERVATION POOL    761.50
MINIMUM   761.22        6868   DATE=22    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=      288 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION