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                                  Oologah 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  642.12   689543
 1   642.22  642.27   694914      0     7278   0.250   10320   0.00  0.00
 2   642.21  642.36   698134      0     3644   0.250    5390   0.00  0.00
 3   642.46  642.60   706725      0     1540   0.050    6200   0.01  0.09
 4   642.63  642.62   707442      0     8233   0.250    8970   0.00  0.00
 5   642.54  642.56   705294      0    10014   0.290    9150   0.00  0.00

 6   642.50  642.36   698134      0    10007   0.140    6710   0.00  0.00
 7   642.31  642.15   690618      0     9992   0.230    6530   0.00  0.00
 8   642.15  642.08   688112      0     9983   0.240    6530   0.00  0.00
 9   642.04  641.78   677607      0     9967   0.320    6530   0.00  0.00
10   641.89  641.64   672743      0     9961   0.180    8650   0.50  0.32

11   641.53  641.24   658848      0     9936   0.090    3260   0.00  0.00
12   641.24  641.17   656416      0     9919   0.250    8780   1.06  0.30
13   641.20  641.23   658500      0     9919   0.010   11100   0.30  0.62
14   641.26  641.21   657807      0     9921   0.060    9870   0.00  0.00
15   641.21  641.11   654332      0     9917   0.230    8520   0.00  0.00

16   641.04  640.90   647130      0     9905   0.280    6570   0.00  0.00
17   640.86  640.73   641379      0     9891   0.220    6570   0.00  0.00
18   640.65  640.67   639350      0     9881   0.090    9550   0.05  0.14
19   640.70  640.92   647805      0     9891   0.040   14360   1.04  0.91
20   641.10  641.54   669268      0     9921   0.140   21140   0.00  0.26

21   641.78  642.14   690260      0     9964   0.320   20900   0.00  0.00
22   642.33  642.51   703505      0    10000   0.280   17120   0.00  0.00
23   642.53  642.39   699209      0    10007   0.350    8300   0.00  0.00
24   642.32  642.18   691691      0     9993   0.370    6590   0.00  0.00
25   642.21  642.16   690975      0     9984   0.300    6590   0.00  0.00

26   642.04  641.91   682121      0     9974   0.190    6590   0.00  0.50
27   642.00  642.24   693839      0     9974   0.160   18520   0.48  0.85
28   642.39  642.89   717108      0    10008   0.110   21890   0.00  0.64
29   643.26  644.11   762214      0    10073   0.080   32900   0.00  0.00
30   644.61  645.62   820432      0    10167   0.010   39620   0.69  1.15

TOTAL                             0   279868   5.780  353720   4.13  5.78
AVERAGE   642.04                  0     9329           11791 NORMAL= 3.63

MAXIMUM   645.62      820432   DATE=30    TOP CONSERVATION POOL    638.00
MINIMUM   640.60      636982   DATE=18    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   4165 AC-FT

                      INFLOW VOLUME=   701593 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION