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                                  Keystone 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  726.32   508586
 1   725.87  725.22   483308   5975    27904   0.320   15400   0.00  0.00
 2   725.03  724.86   475522   5988    26660   0.360   22750   0.00  0.00
 3   724.89  725.14   481578   5975    23984   0.050   27250   0.00  0.01
 4   725.27  725.43   487899   5979    20808   0.340   24300   0.00  0.00
 5   725.31  724.77   473576   5975    20645   0.410   13550   0.00  0.00

 6   724.50  724.27   463182   5963    16508   0.190   11450   0.00  0.00
 7   724.24  724.16   461158   5908    11696   0.300   10800   0.00  0.00
 8   724.14  723.91   456559   5938    11651   0.260    9550   0.00  0.00
 9   723.77  723.59   450674   6013    11546   0.380    8750   0.00  0.00
10   723.47  723.47   448466   6033     8292   0.270    8200   0.00  0.06

11   723.75  723.71   452881   5913     5913   0.120    7300   0.00  0.00
12   724.09  724.29   463549   5883     5883   0.290   11250   0.59  0.40
13   724.58  724.69   471845   6908     6908   0.000   11150   0.26  0.74
14   724.94  724.79   474007   7838     7838   0.050    9100   0.00  0.00
15   724.83  724.67   471412   9717     9717   0.240    8600   0.00  0.00

16   724.81  724.74   472926   9717     9717   0.330   10650   0.00  0.00
17   724.70  724.57   469250  11629    11629   0.320    9850   0.00  0.03
18   724.53  724.45   466654  11704    11704   0.080   10400   0.09  0.05
19   724.45  724.53   468385  11704    11704   0.000   12600   0.47  0.89
20   724.74  724.52   468168  11750    18385   0.100   18500   0.00  0.02

21   724.30  724.25   462813  12163    29975   0.310   27450   0.00  0.00
22   724.56  724.72   472493  12417    36345   0.320   41500   0.00  0.00
23   724.55  724.76   473359  12450    26671   0.430   27350   0.00  0.00
24   724.91  725.07   480064  12500    15243   0.420   18850   0.00  0.00
25   725.06  724.82   474657  12417    15163   0.320   12550   0.00  0.00

26   724.65  724.43   466221  12483    15134   0.210   10950   0.00  0.85
27   724.19  723.39   447010  12592    22688   0.130   13050   0.59  0.80
28   723.65  723.98   457847  12683    37780   0.100   43250   0.00  0.09
29   724.34  725.74   495104  12746    48795   0.020   67600   0.00  0.08
30   726.82  728.67   567978  12788    52937   0.000   89680   0.90  0.55

TOTAL                        277749   579823   6.670  613630   2.90  4.57
AVERAGE   724.65               9258    19327           20454 NORMAL= 2.78

MAXIMUM   728.67      567978   DATE=30    TOP CONSERVATION POOL    723.00
MINIMUM   723.38      446841   DATE=10    TOP FLOOD POOL           754.00

                      INFLOW VOLUME=  1217117 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION