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                                   Wister Lake
                          MONTHLY LAKE REPORT
                                 MAY 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  480.46    65099
 1   480.71  481.02    69390      0     2280   0.150    4450   0.00  0.01
 2   481.09  481.72    75229      0     2295   0.070    5200   0.10  0.22
 3   482.81  485.29   110609      0      981   0.000   18800   2.02  2.05
 4   486.28  487.36   135334      0       41   0.000   12500   0.12  0.09
 5   487.72  488.44   149435      0       32   0.010    7150   0.19  0.13

 6   489.08  490.45   177855      0       37   0.030   14400   1.33  1.58
 7   491.00  491.65   196171      0       38   0.120    9300   0.01  0.01
 8   491.86  492.22   205210      0        6   0.190    4630   0.00  0.00
 9   492.67  493.55   227266      0        0   0.130   11150   1.00  0.72
10   493.84  494.58   245180      0      928   0.050    9000   0.60  0.39

11   495.02  495.44   260712      0     3181   0.020    8400   0.43  0.54
12   495.59  495.97   270467      0     4124   0.060    9100   0.03  0.19
13   496.07  496.33   277325      0     2847   0.060    6450   0.87  0.71
14   496.60  497.50   300035      0     1318   0.260   12800   0.78  1.21
15   497.81  498.13   312610      0     1467   0.120    8000   0.05  0.03

16   498.52  499.20   334706      0     1898   0.270   13000   1.38  0.93
17   499.41  499.57   342558      0     3114   0.030    7100   0.19  0.13
18   499.63  499.57   342558      0     4286   0.220    4400   0.00  0.00
19   499.52  499.39   338738      0     5138   0.240    4400   0.00  0.00
20   499.32  499.12   333008      0     5141   0.270    2400   0.00  0.00

21   499.02  498.78   325947      0     5135   0.270    1700   0.00  0.00
22   498.65  498.40   318149      0     5135   0.230    1300   0.00  0.00
23   498.27  498.01   310147      0     5122   0.170    1150   0.00  0.03
24   497.86  497.61   302214      0     5095   0.100    1100   0.04  0.15
25   497.48  497.20   294091      0     5065   0.060    1000   0.00  0.19

26   497.08  496.79   286115      0     2104   0.090    1800   0.00  0.00
27   496.67  496.27   276178      0     4318   0.170    1000   0.01  0.06
28   496.10  495.68   265129      0     6046   0.100     500   0.00  0.00
29   495.49  495.07   253902      0     6178   0.200     500   0.00  0.00
30   494.86  494.43   242525      0     6055   0.260     500   0.00  0.00
31   494.23  493.78   231175      0     6019   0.290     450   0.00  0.00

TOTAL                             0    95423   4.240  183630   9.15  9.37
AVERAGE   494.47                  0     3078            5924 NORMAL= 6.07

MAXIMUM   499.63      343831   DATE=18    TOP CONSERVATION POOL    478.00
MINIMUM   480.46       65099   DATE= 1    TOP FLOOD POOL           502.50

                      INFLOW VOLUME=   364225 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION