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                                     Birch Lake
                          MONTHLY LAKE REPORT
                                 APR 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  752.42    21487
 1   752.45  752.48    21560      0        1   0.220      50   0.00  0.00
 2   752.50  752.51    21597      0        1   0.280      30   0.00  0.00
 3   752.53  752.52    21609      0        1   0.400      15   0.00  0.00
 4   752.52  752.52    21609      0        1   0.240      10   0.00  0.00
 5   752.49  752.35    21403      0       85   0.200       5   0.00  0.00

 6   752.25  752.13    21136      0      117   0.060       5   0.14  0.07
 7   752.05  751.91    20872      0       98   0.100       5   0.00  0.00
 8   751.84  751.69    20612      0       98   0.130       1   0.00  0.00
 9   751.62  751.47    20352      0       97   0.070       0   0.00  0.00
10   751.42  751.28    20128      0       97   0.170       0   0.00  0.00

11   751.23  751.09    19903      0       97   0.020       0   0.01  0.02
12   751.00  750.85    19625      0       97   0.180       0   0.00  0.01
13   750.79  751.24    20080      0       59   0.170     250   0.08  0.10
14   751.70  751.94    20907      0        1   0.000     275   1.55  1.62
15   751.99  752.03    21014      0        1   0.060      50   0.02  0.00

16   752.04  752.07    21063      0        1   0.230      20   0.00  0.00
17   752.07  752.09    21087      0        1   0.310      15   0.00  0.00
18   752.10  752.11    21111      0        1   0.050      15   0.08  0.09
19   752.13  752.11    21111      0        1   0.200      10   0.00  0.00
20   752.12  752.03    21014      0       38   0.280       3   0.00  0.00

21   751.97  751.83    20777      0       98   0.320       0   0.00  0.00
22   751.74  751.59    20494      0       98   0.430       0   0.00  0.00
23   751.53  751.45    20328      0       69   0.260       0   0.00  0.00
24   751.43  751.52    20411      0       66   0.170     100   0.00  0.00
25   751.50  751.65    20565      0       84   0.040     140   0.76  0.44

26   751.67  751.62    20529      0       59   0.090      50   0.22  0.17
27   751.61  751.57    20470      0       42   0.050      20   0.00  0.00
28   751.55  751.49    20376      0       42   0.110      10   0.00  0.00
29   751.46  751.42    20293      0       42   0.280       5   0.00  0.00
30   751.39  751.49    20376      0       42   0.320      80   0.00  0.00

TOTAL                             0     1536   5.440    1164   2.86  2.52
AVERAGE   751.80                  0       51              39 NORMAL= 3.34

MAXIMUM   752.53       21621   DATE= 3    TOP CONSERVATION POOL    750.50
MINIMUM   750.77       19534   DATE=13    TOP FLOOD POOL           774.00

                      INFLOW VOLUME=     2309 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION