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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 MAY 10


    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  638.43   565827
 1   638.52  638.51   568359      0      450   0.050    1850   0.17  0.47
 2   638.50  638.48   567408      0      449   0.060     500   0.10  0.07
 3   638.49  638.43   565827      0     1049   0.230     500   0.00  0.00
 4   638.37  638.29   561396      0     1342   0.280     500   0.00  0.00
 5   638.31  638.28   561081      0     1342   0.350     500   0.00  0.00

 6   638.23  638.06   554118      0     1340   0.370     500   0.00  0.01
 7   638.12  638.08   554751      0     1340   0.440     500   0.00  0.00
 8   638.01  637.92   549802      0     1339   0.300     500   0.00  0.00
 9   637.87  637.78   545575      0     1337   0.290     500   0.00  0.00
10   637.79  637.58   539533      0      504   0.120     500   0.11  0.18

11   637.85  637.79   545875      0        0   0.050     500   0.00  0.39
12   637.82  637.72   543761      0        0   0.090     500   0.00  0.20
13   638.00  638.18   557915      0      739   0.190    8000   0.38  0.84
14   638.54  639.37   596010      0      788   0.060   20000   0.65  0.41
15   639.74  640.32   627513      0       50   0.010   16000   0.29  0.14

16   640.58  640.82   644423      0       48   0.040    8700   0.00  0.07
17   640.90  641.00   650511      0     5853   0.080    9100   0.04  0.12
18   640.98  641.05   652247      0     6172   0.150    7330   0.00  0.00
19   641.11  641.84   679691      0     2314   0.280   16200   0.00  0.01
20   642.22  643.18   727700      0      620   0.040   25050   2.86  1.15

21   643.57  643.92   755060      0     2327   0.150   14200   0.00  0.00
22   643.96  644.07   760689      0     5543   0.300    8000   0.00  0.00
23   644.10  644.15   763741      0     5548   0.310    7000   0.00  0.00
24   644.16  644.18   764884      0     5550   0.290    6000   0.00  0.00
25   644.17  644.16   764121      0     5550   0.330    6000   0.00  0.00

26   644.15  644.13   762978      0     5549   0.290    5000   0.00  0.06
27   644.13  644.09   761453      0     5548   0.250    5000   0.00  0.00
28   644.07  643.99   757649      0     5546   0.330    4000   0.00  0.00
29   643.93  643.79   750254      0     5540   0.350    2000   0.00  0.00
30   643.70  643.51   739902      0     5532   0.350     921   0.00  0.00
31   643.42  643.25   730289      0     5522   0.340    1025   0.11  0.15

TOTAL                             0    84831   6.770  176876   4.71  4.27
AVERAGE   640.84                  0     2736            5706 NORMAL= 5.09

MAXIMUM   644.18      764884   DATE=24    TOP CONSERVATION POOL    638.00
MINIMUM   637.58      539533   DATE=10    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   4066 AC-FT

                      INFLOW VOLUME=   350828 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION