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                                  Oologah 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  645.62   820432
 1   646.25  648.16   922716      0     4875   0.030   56550   0.84  0.41
 2   649.03  650.60  1026382      0     2003   0.030   54410   0.56  0.55
 3   651.35  651.98  1087874      0     4846   0.060   36030   0.25  0.41
 4   652.15  652.38  1106361      0     4868   0.080   14320   0.00  0.02
 5   652.46  652.46  1110064      0     9622   0.050   11570   0.00  0.00

 6   652.41  652.49  1111451      0    15030   0.010   16030   0.12  0.24
 7   652.47  652.47  1110525      0    15033   0.170   14970   0.00  0.00
 8   652.62  652.84  1127651      0    15047   0.240   23830   0.00  0.84
 9   652.95  653.07  1138388      0    15077   0.060   20850   0.24  0.23
10   653.12  653.25  1146956      0    15094   0.210   19680   0.00  0.00

11   653.30  653.17  1143147      0    17842   0.140   16270   0.02  0.05
12   653.09  652.92  1131352      0    20101   0.200   14350   0.00  0.00
13   653.21  653.65  1165998      0    20129   0.090   38160   0.09  0.77
14   653.73  653.65  1165998      0    20184   0.360   20430   0.25  0.12
15   653.57  653.46  1156953      0    20162   0.120   16100   0.06  0.00

16   653.60  653.33  1150765      0    20156   0.310   17540   0.59  0.53
17   653.22  653.05  1137435      0    19670   0.310   13480   0.00  0.00
18   652.91  652.75  1123485      0    17767   0.330   11240   0.00  0.00
19   652.64  652.32  1103584      0    15040   0.320    5540   0.00  0.00
20   652.12  651.80  1079784      0    14992   0.340    3520   0.00  0.00

21   651.66  651.47  1064951      0    14953   0.340    8000   0.00  0.00
22   651.42  651.22  1053714      0    16884   0.340   11740   0.00  0.00
23   651.14  650.94  1041211      0    20106   0.340   14250   0.00  0.00
24   650.85  650.64  1028128      0    20068   0.290   13910   0.19  0.01
25   650.55  650.35  1015480      0    20029   0.290   13880   0.00  0.02

26   650.24  650.00  1000218      0    19990   0.120   12720   0.43  0.13
27   649.89  649.70   987463      0    19948   0.280   13660   0.00  0.01
28   649.58  649.36   973007      0    19905   0.060   12960   0.00  0.00
29   649.24  649.00   957701      0    19860   0.220   12650   0.00  0.00
30   648.87  648.65   943125      0    19812   0.350   12650   0.00  0.00
31   648.51  648.25   926465      0    19764   0.400   12310   0.00  0.00

TOTAL                             0   498856   6.490  563600   3.64  4.34
AVERAGE   651.59                  0    16092           18181 NORMAL= 5.09

MAXIMUM   653.73     1169804   DATE=14    TOP CONSERVATION POOL    638.00
MINIMUM   645.62      820432   DATE= 1    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   4304 AC-FT

                      INFLOW VOLUME=  1117884 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION