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                                   Copan Lake
                          MONTHLY LAKE REPORT
                                 DEC 99


    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  708.79    37787
 1   708.79  708.77    37699      0        5   0.250       0   0.00  0.00
 2   708.75  708.86    38096      0        5   0.350     200   0.00  0.00
 3   708.82  708.88    38184      0        5   0.100     100   0.66  0.38
 4   709.04  709.20    39654      0        5   0.130     750   1.04  1.29
 5   709.34  709.56    41347      0        5   0.030     875   0.92  0.76

 6   709.63  709.68    41911      0        5   0.070     300   0.00  0.09
 7   709.77  709.78    42382      0        5   0.170     280   0.00  0.00
 8   709.81  709.83    42617      0        5   0.270     150   0.00  0.00
 9   710.00  710.26    44714      0        5   0.040    1075   1.07  0.83
10   710.36  710.61    46460      0        5   0.040     900   0.33  0.25

11   710.70  710.87    47758      0        5   0.080     650   0.00  0.00
12   710.93  711.01    48460      0        5   0.020     350   0.00  0.00
13   711.06  711.09    48882      0        5   0.030     250   0.00  0.00
14   711.09  710.95    48158      0      571   0.090     250   0.00  0.00
15   710.82  710.62    46510      0     1071   0.370     250   0.05  0.01

16   710.55  710.27    44764      0     1062   0.110     200   0.00  0.00
17   710.15  710.14    44115      0      570   0.120     150   0.00  0.00
18   710.09  710.05    43665      0      209   0.080     100   0.00  0.01
19   710.04  710.03    43566      0      209   0.030      50   0.00  0.00
20   710.00  709.98    43322      0       84   0.040      50   0.00  0.00

21   709.98  709.99    43369      0        5   0.080      50   0.00  0.00
22   710.00  710.01    43466      0        5   0.090      40   0.00  0.00
23   710.01  709.99    43369      0        5   0.050      40   0.00  0.00
24   710.01  710.02    43516      0        5   0.090      40   0.00  0.00
25   709.99  710.01    43466      0        5   0.080      30   0.00  0.00

26   710.03  710.02    43516      0        5   0.090      30   0.00  0.00
27   710.02  710.02    43516      0        5   0.220      15   0.00  0.00
28   710.01  710.02    43516      0        5   0.070      15   0.00  0.00
29   710.02  710.01    43466      0        5   0.130      15   0.00  0.00
30   710.03  710.04    43616      0        5   0.250      15   0.00  0.00
31   710.03  710.02    43516      0        5   0.120       5   0.00  0.00

TOTAL                             0     3895   3.690    7225   4.07  3.62
AVERAGE   710.02                  0      126             233 NORMAL= 1.36

MAXIMUM   711.09       48882   DATE=14    TOP CONSERVATION POOL    710.00
MINIMUM   708.72       37478   DATE= 2    TOP FLOOD POOL           732.00

                      INFLOW VOLUME=    14331 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION