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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 MAY 00


    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  638.83   578486
 1   639.02  639.10   587147      0      226   0.110    4700   2.52  1.12
 2   639.13  639.19   590102      0      350   0.050    1800   0.00  0.04
 3   639.19  639.18   589773      0      452   0.090     650   0.00  0.00
 4   639.19  639.20   590430      0      452   0.110     650   0.02  0.00
 5   639.20  639.18   589773      0      452   0.160     650   0.00  0.00

 6   639.31  640.01   617029      0      166   0.120   14050   1.17  0.47
 7   640.19  640.26   625484      0        0   0.070    4500   1.28  0.42
 8   640.36  640.39   629881      0        0   0.150    2500   0.00  0.00
 9   641.32  643.56   741750      0        0   0.210   56600   1.28  2.13
10   644.45  645.51   816127      0        0   0.110   37850   0.10  0.05

11   645.60  645.48   814951      0     3100   0.250    4200   0.00  0.00
12   645.46  645.16   802424      0    10292   0.190    1500   0.00  0.00
13   644.97  644.39   772895      0    15008   0.170     800   0.00  0.00
14   644.11  643.69   746557      0    13558   0.260     500   0.00  0.00
15   643.53  643.03   722155      0    12794   0.280     500   0.00  0.00

16   642.78  642.30   695987      0    12727   0.200     500   0.00  0.16
17   642.00  641.51   668227      0    12666   0.080     500   0.10  0.02
18   641.30  640.92   647805      0    12605   0.120     650   0.00  0.00
19   640.67  640.46   632248      0     8204   0.200     750   0.00  0.00
20   640.37  640.22   624130      0     4079   0.080     750   0.00  0.00

21   640.15  639.98   616033      0     4073   0.210     750   0.00  0.00
22   639.89  639.90   613408      0     1286   0.280     700   0.00  0.00
23   639.90  639.95   615049      0        0   0.400     650   0.00  0.00
24   639.99  640.05   618381      0        0   0.320    1950   0.00  0.00
25   640.25  640.28   626161      0        0   0.190    4100   1.30  0.62

26   640.45  640.85   645437      0        0   0.100    9950   0.48  0.96
27   640.86  641.02   651206      0        0   0.160    1400   0.33  0.15
28   641.07  640.85   645437      0     3229   0.190    1000   0.17  0.16
29   640.77  640.53   634616      0     4994   0.280     550   0.00  0.00
30   640.44  640.20   623455      0     4988   0.290     300   0.00  0.00
31   640.12  639.99   616361      0     3253   0.280     200   0.00  0.00

TOTAL                             0   128952   5.710  156150   8.75  6.30
AVERAGE   641.17                  0     4160            5037 NORMAL= 5.09

MAXIMUM   645.60      819649   DATE=11    TOP CONSERVATION POOL    638.00
MINIMUM   638.83      578486   DATE= 1    TOP FLOOD POOL           661.00

                      INFLOW VOLUME=   309719 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION