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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 APR 02


    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  638.21   558865
 1   638.16  638.12   556016      0        0   0.250      50   0.00  0.00
 2   638.16  638.43   565827      0        0   0.400      50   0.00  0.00
 3   638.33  638.19   558232      0        0   0.210      50   0.00  0.01
 4   638.19  638.15   556967      0        0   0.280      50   0.00  0.00
 5   638.15  638.13   556333      0        0   0.250      50   0.00  0.00

 6   638.10  638.12   556016      0        0   0.220      50   0.00  0.00
 7   638.13  638.16   557282      0        0   0.170     700   0.14  0.15
 8   638.16  638.27   560764      0        0   0.000    1200   0.86  0.67
 9   638.25  638.25   560131      0        0   0.010     600   0.05  0.12
10   638.24  638.22   559180      0        0   0.220     300   0.00  0.00

11   638.21  638.28   561081      0        0   0.280     200   0.00  0.00
12   638.22  638.28   561081      0        0   0.190     150   0.00  0.07
13   638.27  638.27   560764      0        0   0.160     130   0.00  0.00
14   638.24  638.21   558865      0        0   0.030     120   0.00  0.00
15   638.22  638.22   559180      0        0   0.260     110   0.00  0.00

16   638.10  638.18   557915      0        0   0.280     100   0.00  0.00
17   638.18  638.19   558232      0        0   0.080     100   0.04  0.00
18   638.18  638.19   558232      0        0   0.250     100   0.00  0.00
19   638.18  638.30   561712      0        0   0.180    1900   0.00  0.00
20   638.34  638.33   562663      0        0   0.090     900   0.17  0.45

21   638.30  638.37   563928      0        0   0.060     650   0.00  0.25
22   638.36  638.33   562663      0        0   0.220     250   0.00  0.00
23   638.37  638.55   569624      0        0   0.320    3150   1.03  0.25
24   638.49  638.57   570257      0      590   0.140    1000   0.04  0.02
25   638.51  638.49   567725      0      899   0.330     300   0.00  0.00

26   638.51  638.45   566460      0      899   0.290     330   0.08  0.36
27   638.39  638.39   564561      0      898   0.030     250   0.16  0.46
28   638.57  638.61   571523      0      899   0.240    4700   0.03  0.56
29   638.65  638.63   572156      0     1490   0.250    2400   0.00  0.00
30   638.69  638.64   572473      0     1791   0.250    1500   0.00  0.00

TOTAL                             0     7467   5.940   21440   2.60  3.37
AVERAGE   638.32                  0      249             715 NORMAL= 3.63

MAXIMUM   638.72      575003   DATE=24    TOP CONSERVATION POOL    638.00
MINIMUM   638.03      553169   DATE= 1    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   2100 AC-FT, RELEASED      0 AC-FT

                      INFLOW VOLUME=    42526 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION