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                                     Birch Lake
                          MONTHLY LAKE REPORT
                                 DEC 07


    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  750.09    18755
 1   750.07  750.09    18755      0        1   0.070       0   0.01  0.02
 2   750.08  750.07    18732      0        1   0.080       0   0.02  0.02
 3   750.07  750.06    18721      0        1   0.060       0   0.00  0.00
 4   750.05  750.03    18686      0        1   0.100       0   0.00  0.00
 5   750.02  750.01    18663      0        1   0.080       0   0.00  0.00

 6   750.01  750.01    18663      0        1   0.070       0   0.00  0.00
 7   750.00  750.00    18652      0        1   0.020       0   0.03  0.06
 8   749.98  749.98    18630      0        1   0.000       0   0.03  0.00
 9   749.98  749.98    18630      0        1   0.000       0   0.00  0.18
10   749.98  749.98    18630      0        1   0.000       0   0.00  0.49

11   749.98  750.31    19007      0        1   0.010     150   0.00  0.01
12   750.36  750.41    19121      0        1   0.000      60   0.45  0.84
13   750.42  750.44    19156      0        1   0.000      20   0.02  0.00
14   750.44  750.47    19190      0        1   0.000      20   0.14  0.00
15   750.47  750.49    19213      0        1   0.000      10   0.67  0.24

16   750.50  750.50    19225      0        1   0.010       5   0.01  0.04
17   750.49  750.51    19236      0        1   0.040       5   0.15  0.00
18   750.50  750.49    19213      0        1   0.140       5   0.01  0.01
19   750.51  750.49    19213      0        1   0.060       5   0.00  0.00
20   750.50  750.49    19213      0        1   0.080       5   0.00  0.00

21   750.49  750.49    19213      0        1   0.060       2   0.00  0.00
22   750.50  750.53    19259      0        1   0.110      15   0.00  0.00
23   750.54  750.53    19259      0        1   0.010       5   0.24  0.17
24   750.54  750.53    19259      0        1   0.050       5   0.08  0.00
25   750.53  750.54    19270      0        1   0.060       5   0.00  0.00

26   750.53  750.54    19270      0        1   0.120       5   0.00  0.00
27   750.55  750.55    19282      0        1   0.000       5   0.04  0.05
28   750.57  750.56    19293      0        1   0.000       5   0.17  0.15
29   750.57  750.57    19305      0        1   0.020       5   0.00  0.00
30   750.57  750.57    19305      0        1   0.040       5   0.00  0.00
31   750.57  750.56    19293      0        1   0.060       5   0.00  0.00

TOTAL                             0       33   1.350     347   2.07  2.28
AVERAGE   750.35                  0        1              11 NORMAL= 1.47

MAXIMUM   750.60       19339   DATE=31    TOP CONSERVATION POOL    750.50
MINIMUM   749.98       18630   DATE=11    TOP FLOOD POOL           774.00

                      INFLOW VOLUME=      688 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION