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                                    Big Hill Lake
                          MONTHLY LAKE REPORT
                                 APR 09


    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  859.38    28641
 1   859.28  859.10    28297      0      233   0.210      70   0.00  0.00
 2   859.03  858.91    28066      0      154   0.240      40   0.00  0.00
 3   858.85  858.76    27885      0      107   0.030      20   0.14  0.10
 4   858.71  858.64    27740      0       77   0.300      20   0.00  0.00
 5   858.61  858.55    27632      0       59   0.320      10   0.00  0.00

 6   858.51  858.45    27511      0       41   0.100       5   0.00  0.00
 7   858.42  858.39    27439      0       32   0.200       1   0.00  0.00
 8   858.37  858.35    27391      0       27   0.210       1   0.00  0.00
 9   858.35  858.31    27343      0       23   0.380       1   0.00  0.00
10   858.34  858.32    27355      0       22   0.190      30   0.35  0.42

11   858.31  858.30    27330      0       21   0.050      20   0.00  0.00
12   858.31  858.43    27487      0       24   0.300     100   0.18  0.15
13   858.62  858.76    27885      0       71   0.040     280   0.54  0.60
14   858.76  858.70    27813      0       88   0.050      60   0.01  0.00
15   858.68  858.61    27704      0       72   0.250      30   0.00  0.00

16   858.58  858.53    27608      0       54   0.320      10   0.00  0.00
17   858.51  858.46    27523      0       40   0.250       5   0.00  0.00
18   858.48  858.95    28114      0       72   0.180     370   0.14  0.14
19   859.21  859.61    28924      0      264   0.070     680   1.45  1.31
20   859.54  859.32    28568      0      319   0.090     150   0.34  0.38

21   859.22  859.04    28223      0      211   0.290      50   0.00  0.00
22   858.97  858.84    27981      0      135   0.280      20   0.00  0.00
23   858.79  858.69    27800      0       93   0.410      20   0.00  0.00
24   858.65  858.57    27656      0       65   0.480      10   0.00  0.00
25   858.55  858.51    27584      0       48   0.400      10   0.00  0.00

26   858.52  858.50    27572      0       42   0.190      50   0.33  0.45
27   858.69  860.59    30146      0      197   0.180    1490   0.35  0.68
28   861.01  860.39    29894      0      745   0.020     620   2.35  1.90
29   860.13  861.38    31150      0      685   0.090     620   0.00  0.00
30   861.16  860.90    30535      0      836   0.020    1230   2.16  1.98

TOTAL                             0     4857   6.140    6023   8.34  8.11
AVERAGE   858.96                  0      162             201 NORMAL= 3.78

MAXIMUM   861.38       31150   DATE=29    TOP CONSERVATION POOL    858.00
MINIMUM   858.30       27330   DATE=11    TOP FLOOD POOL           867.50

                      INFLOW VOLUME=    11946 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION