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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 MAY 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  643.70   746927
 1   643.55  643.21   728810      0    13902   0.200    4860   0.02  0.07
 2   643.07  643.12   725482      0     8223   0.020    6660   0.53  0.83
 3   643.19  643.76   749146      0     2198   0.040   14310   0.21  0.29
 4   644.00  644.31   769843      0     1362   0.110   12040   0.15  0.46
 5   644.35  644.42   774038      0     4088   0.150    6430   0.00  0.00

 6   644.42  644.46   775566      0     4089   0.140    5170   0.00  0.02
 7   644.69  646.05   837306      0     1421   0.220   32650   1.33  1.87
 8   646.71  648.17   923132      0        0   0.030   43440   0.36  0.34
 9   648.74  650.09  1004144      0        0   0.080   41090   0.34  0.25
10   650.61  651.44  1063604      0        0   0.140   30120   0.13  0.10

11   651.59  651.89  1083831      0     7094   0.060   17620   0.23  0.44
12   651.89  651.68  1074391      0    18286   0.190   14050   0.00  0.04
13   651.53  651.29  1056861      0    20005   0.340   11680   0.00  0.00
14   651.15  650.91  1039901      0    19360   0.340   11300   0.00  0.00
15   650.74  650.33  1014610      0    23478   0.320   10930   0.00  0.00

16   650.13  649.65   985338      0    24627   0.100   10330   0.02  0.28
17   649.46  649.03   958978      0    24390   0.310   11620   0.00  0.00
18   648.82  648.71   945624      0    17484   0.360   11150   0.00  0.00
19   648.91  649.04   959401      0     4724   0.270   12130   0.00  0.00
20   648.89  648.47   935626      0    22464   0.310   10940   0.00  0.00

21   648.24  647.77   906674      0    23907   0.320    9730   0.00  0.00
22   647.57  647.09   878941      0    23633   0.290    9950   0.00  0.03
23   646.88  646.35   849293      0    23368   0.190    8750   0.00  0.00
24   646.05  645.75   825522      0    21051   0.220    9180   0.00  0.08
25   645.53  645.20   803992      0    14931   0.040    4290   0.48  0.44

26   645.02  644.72   785481      0    10358   0.120    1180   0.02  0.00
27   644.59  644.25   767555      0    10326   0.080    1460   0.11  0.03
28   644.07  643.76   749146      0    10291   0.090    1330   0.15  0.25
29   643.58  643.37   734725      0     7378   0.230     370   0.00  0.12
30   643.32  643.26   730659      0     3723   0.170    1830   0.00  0.05
31   643.23  643.16   726960      0     3050   0.080    1620   0.00  0.09

TOTAL                             0   369211   5.560  368210   4.08  6.08
AVERAGE   646.93                  0    11910           11878 NORMAL= 5.09

MAXIMUM   651.89     1083831   DATE=12    TOP CONSERVATION POOL    638.00
MINIMUM   643.01      721415   DATE= 2    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   4344 AC-FT

                      INFLOW VOLUME=   730334 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION