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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 MAY 15


    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  642.51   690524
 1   642.42  642.30   683487      0     4235   0.320    1120   0.00  0.00
 2   642.19  642.09   676452      0     3773   0.320     645   0.00  0.00
 3   641.97  641.91   670531      0     3340   0.310     770   0.00  0.00
 4   641.82  641.74   665049      0     3103   0.310     765   0.00  0.00
 5   641.66  641.58   659890      0     2832   0.320     500   0.00  0.01

 6   641.57  641.38   653439      0     2696   0.160     600   0.96  0.54
 7   641.43  641.42   654728      0     1889   0.190    2020   0.52  0.13
 8   641.43  641.55   658921      0     1346   0.230    3765   0.00  0.16
 9   641.54  641.79   666661      0     1294   0.200    5390   2.38  0.70
10   641.85  642.45   688514      0     1319   0.080   12570   0.22  0.41

11   642.70  642.94   704933      0      670   0.120    9352   0.96  0.50
12   643.05  643.15   712111      0      341   0.290    4260   0.00  0.00
13   643.17  643.13   711421      0     2671   0.300    2505   0.00  0.00
14   643.27  643.95   739666      0     2960   0.060   17460   1.30  0.78
15   644.10  644.34   753585      0     2396   0.140    9675   0.54  0.23

16   644.40  644.52   760042      0     2435   0.140    6030   0.08  0.06
17   645.15  646.44   830418      0     1261   0.210   37150   1.35  1.22
18   646.92  647.56   873458      0     3526   0.270   25720   0.00  0.04
19   647.80  647.83   884058      0     8480   0.330   14104   0.00  0.00
20   647.81  647.79   882486      0     9998   0.140    9405   0.13  0.58

21   647.79  647.76   881309      0    10836   0.070   10570   0.00  0.05
22   647.67  647.37   866000      0    13376   0.180    5870   0.00  0.00
23   647.22  647.31   863645      0    11844   0.080   10875   0.23  0.05
24   648.33  649.95   968713      0       87   0.090   53225   3.54  2.27
25   650.70  651.96  1057774      0        0   0.040   45160   0.46  0.28

26   653.37  653.26  1116264      0        0   0.110   29910   0.22  0.12
27   653.68  654.24  1161415      0        0   0.230   23265   0.00  0.02
28   654.41  655.06  1200103      0        0   0.280   19790   0.00  0.09
29   655.39  656.24  1257538      0        0   0.120   28985   1.11  1.01
30   656.71  657.34  1313181      0        0   0.020   28305   0.98  0.41
31   657.64  658.17  1356005      0        0   0.090   21910   0.00  0.00

TOTAL                             0    96707   5.750  441671  14.98  9.66
AVERAGE   646.73                  0     3120           14247 NORMAL= 5.09

MAXIMUM   658.17     1356005   DATE=31    TOP CONSERVATION POOL    638.00
MINIMUM   641.38      653439   DATE= 6    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   6903 AC-FT

                      INFLOW VOLUME=   876041 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION