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                                  Oologah Lake
                          MONTHLY LAKE REPORT
                                 APR 01


    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  638.17   557598
 1   638.09  638.12   556016      0     1340   0.120     750   0.00  0.00
 2   638.12  638.13   556333      0     1340   0.130    1600   0.00  0.01
 3   638.13  638.18   557915      0     1341   0.020    2000   0.00  0.25
 4   638.17  638.17   557598      0     1341   0.100    1600   0.00  0.00
 5   638.16  638.15   556967      0     1341   0.130    1400   0.00  0.00

 6   638.16  638.10   555383      0     1340   0.090    1400   0.00  0.00
 7   638.21  638.24   559814      0     1341   0.170    1400   0.00  0.00
 8   638.15  638.11   555700      0     1340   0.270    1200   0.00  0.00
 9   638.13  638.10   555383      0     1340   0.210    1050   0.00  0.00
10   638.08  638.18   557915      0      743   0.230    1000   0.00  0.26

11   638.05  638.11   555700      0      224   0.070    1000   0.22  0.34
12   638.17  638.28   561081      0      224   0.310    3150   0.03  0.16
13   638.32  638.33   562663      0     1173   0.160    2250   0.00  0.00
14   638.31  638.19   558232      0     1785   0.210    1500   0.00  0.00
15   638.38  638.35   563294      0     1786   0.100    2850   0.33  0.70

16   638.37  638.42   565510      0     2280   0.230    3600   0.00  0.00
17   638.50  638.46   566777      0     2687   0.140    3500   0.00  0.00
18   638.46  638.38   564245      0     2686   0.170    2700   0.00  0.00
19   638.35  638.24   559814      0     2682   0.250    2400   0.00  0.00
20   638.15  638.29   561396      0     1597   0.170    2300   0.00  0.00

21   638.28  638.52   568676      0      898   0.100    2300   0.00  0.00
22   638.41  638.63   572156      0      899   0.050    2800   0.00  0.01
23   638.70  638.70   574372      0      900   0.080    2250   0.38  0.44
24   638.73  638.69   574055      0     1742   0.210    2100   0.00  0.00
25   638.69  638.68   573738      0     2246   0.220    1500   0.00  0.00

26   638.64  638.54   569307      0     2244   0.230    1000   0.00  0.00
27   638.51  638.42   565510      0     2243   0.300     700   0.00  0.00
28   638.38  638.30   561712      0     2343   0.250     600   0.00  0.02
29   638.26  638.18   557915      0     2239   0.250     600   0.00  0.00
30   638.14  638.06   554118      0     2237   0.300     600   0.00  0.00

TOTAL                             0    47923   5.270   53100   0.96  2.19
AVERAGE   638.31                  0     1597            1770 NORMAL= 3.63

MAXIMUM   638.73      570372   DATE=24    TOP CONSERVATION POOL    638.00
MINIMUM   637.63      541043   DATE=11    TOP FLOOD POOL           661.00

WATER SUPPLY:  WITHDRAWN   1890 AC-FT, RELEASED      0 AC-FT

                      INFLOW VOLUME=   105322 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION