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                                   Birch Lake
                          MONTHLY LAKE REPORT
                                 MAY 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  751.49    20376
 1   751.56  752.74    21876      0       42   0.140     800   0.43  0.74
 2   752.87  753.07    22278      0       18   0.020     220   0.61  0.64
 3   753.17  753.84    23240      0        1   0.030     490   0.51  0.35
 4   753.92  754.01    23453      0        1   0.070     100   0.59  0.46
 5   754.04  754.07    23530      0        1   0.160      50   0.00  0.00

 6   754.08  754.19    23683      0        1   0.140      80   0.00  0.02
 7   757.10  759.15    30468      0        1   0.180    3420   2.03  2.30
 8   759.24  759.74    31359      0        1   0.040     450   0.24  0.30
 9   760.44  760.85    33092      0      269   0.060    1000   0.81  0.95
10   760.62  760.55    32619      0      836   0.190     600   0.00  0.00

11   760.22  759.56    31087      0      940   0.050     170   0.74  0.55
12   759.18  758.36    29312      0      928   0.090      50   0.11  0.11
13   757.91  757.01    27408      0      914   0.310      10   0.00  0.00
14   756.56  755.61    25524      0      899   0.320       5   0.00  0.00
15   755.15  754.50    24081      0      698   0.360       0   0.00  0.00

16   754.18  753.52    22841      0      573   0.090       0   0.05  0.07
17   753.21  752.86    22021      0      398   0.270       0   0.00  0.00
18   752.68  752.44    21512      0      198   0.240       0   0.00  0.00
19   752.35  752.13    21136      0      139   0.270       0   0.00  0.00
20   752.03  751.81    20754      0      128   0.310       0   0.00  0.00

21   751.70  751.54    20435      0      115   0.310       0   0.00  0.00
22   751.48  751.34    20199      0       97   0.280       0   0.05  0.02
23   751.26  751.18    20010      0       83   0.200       0   0.00  0.00
24   751.21  751.18    20010      0       70   0.270      40   0.01  0.15
25   751.18  751.13    19951      0       35   0.000      10   0.87  0.85

26   751.12  751.07    19880      0       35   0.070       5   0.00  0.01
27   751.08  751.41    20281      0       35   0.090     150   0.25  0.45
28   751.47  751.51    20399      0       35   0.020      75   0.84  0.81
29   751.50  751.49    20376      0       70   0.160      30   0.01  0.10
30   751.49  751.46    20340      0       70   0.160      30   0.01  0.15
31   751.45  751.39    20258      0       70   0.080      40   0.00  0.00

TOTAL                             0     7704   4.980    7825   8.16  9.03
AVERAGE   754.02                  0      249             252 NORMAL= 5.00

MAXIMUM   761.06       33427   DATE= 9    TOP CONSERVATION POOL    750.50
MINIMUM   751.07       19880   DATE=26    TOP FLOOD POOL           774.00

                      INFLOW VOLUME=    15521 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION