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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 APR 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  639.09   581118
 1   639.08  639.03   579173      0       46   0.230     405   0.00  0.00
 2   639.07  639.23   585655      0       46   0.170    2590   0.05  0.15
 3   639.46  639.27   586953      0       46   0.240    1025   0.00  0.45
 4   639.25  639.27   586953      0       46   0.220     580   0.00  0.00
 5   639.23  639.30   587925      0       46   0.250     500   0.00  0.00

 6   639.27  639.24   585980      0       46   0.030     335   0.23  0.03
 7   639.27  639.37   590194      0       46   0.080     300   0.00  0.00
 8   639.34  639.37   590194      0       66   0.290     340   0.00  0.15
 9   639.30  639.54   595705      0      137   0.170    1800   0.01  0.23
10   639.45  639.50   594409      0      181   0.250     740   0.00  0.00

11   639.49  639.51   594734      0      182   0.250     440   0.00  0.01
12   639.48  639.49   594085      0      181   0.120     335   0.00  0.14
13   639.60  639.58   597003      0      182   0.160    3430   0.16  0.65
14   639.68  639.87   606404      0      182   0.070    5160   0.34  0.08
15   640.03  640.35   621316      0      231   0.120    7915   0.01  0.01

16   640.46  640.68   631402      0      370   0.040    5810   0.01  0.00
17   640.77  640.99   640877      0      584   0.250    5645   0.00  0.00
18   641.04  641.40   654085      0      774   0.170    7720   0.21  0.79
19   641.55  641.89   669888      0     1054   0.170    9275   0.22  0.49
20   642.09  642.45   688514      0     2226   0.130   12025   0.33  0.13

21   642.58  642.75   698566      0     3692   0.290    9155   0.00  0.00
22   642.90  643.05   708665      0     4348   0.270    9800   0.00  0.05
23   643.09  643.20   713832      0     4857   0.230    7710   0.00  0.04
24   643.29  643.32   717966      0     5021   0.120    7345   0.00  0.02
25   643.48  643.50   724166      0     5090   0.110    8685   0.00  0.00

26   643.45  643.32   717966      0     5080   0.340    2275   0.00  0.00
27   643.32  643.14   711766      0     5062   0.190    2205   0.25  0.05
28   643.05  642.90   703593      0     5000   0.140    1140   0.59  0.04
29   642.82  642.69   696556      0     4803   0.130    1660   0.00  0.00
30   642.63  642.51   690524      0     4604   0.280    1996   0.00  0.00

TOTAL                             0    54226   5.510  118341   2.41  3.51
AVERAGE   640.99                  0     1808            3945 NORMAL= 3.63

MAXIMUM   643.50      724166   DATE=25    TOP CONSERVATION POOL    638.00
MINIMUM   639.03      579173   DATE= 1    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   7458 AC-FT

                      INFLOW VOLUME=   234726 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION