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                               Ft Gibson Lake, OK
                          MONTHLY LAKE REPORT
                                 MAY 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  554.58   376394
 1   554.78  555.29   390300  10764    10764   0.210   18000   0.00  0.02
 2   555.09  554.64   377552   8507     8507   0.280    2150   0.17  0.12
 3   554.39  554.40   372920   5566     5566   0.100    3200   0.01  0.04
 4   554.42  554.22   369445   3080     3080   0.050    1500   0.01  0.00
 5   554.30  554.39   372727   5124     5124   0.190    7000   0.00  0.00

 6   554.27  554.63   377359   5829     5829   0.380    8300   0.00  0.44
 7   554.28  554.51   375043   9738    13278   0.230   12500   0.00  0.00
 8   554.31  554.87   381991   9738    13278   0.310   17000   0.00  0.05
 9   555.21  555.53   395101  11816    32177   0.110   39000   0.00  0.36
10   555.92  557.38   433608  11707    40766   0.290   60500   0.00  0.00

11   558.12  559.54   481928  11648    41459   0.090   65000   0.04  0.01
12   560.21  561.74   535100  11320    40485   0.260   67500   0.00  0.00
13   562.32  563.49   580632  11010    40879   0.040   64000   0.58  1.22
14   563.99  564.90   619321  10756    41236   0.240   61000   0.00  0.01
15   565.32  565.77   644277  10588    42103   0.320   55000   0.00  0.00

16   565.89  565.97   650035  10540    42479   0.250   45500   0.02  0.04
17   566.58  566.67   670933  10570    42441   0.090   53000   1.80  1.00
18   566.32  565.59   639093  11196    66971   0.050   51100   0.05  0.46
19   565.23  564.18   599304  11456    68182   0.230   48000   0.00  0.00
20   563.64  562.67   558953  11384    55533   0.280   35000   0.01  0.00

21   561.40  560.19   497160  11392    42072   0.120   11000   0.00  0.00
22   559.12  558.75   463800  11428    34554   0.320   18000   0.00  0.00
23   557.94  557.90   444841  11298    25672   0.290   16500   0.00  0.00
24   557.49  557.73   441168  11312    25673   0.220   24000   0.92  0.34
25   558.04  558.46   457305  11870    31181   0.100   39400   0.05  0.06

26   558.68  560.35   500999   5008    12073   0.140   34300   0.00  0.00
27   561.18  562.83   563097      0        0   0.260   31400   0.01  0.11
28   563.87  566.10   653889      0        0   0.120   45820   0.01  0.13
29   566.98  567.83   706614      0        0   0.060   26700   0.71  0.51
30   567.85  567.56   698216   6945    11732   0.150    7800   0.25  0.11
31   567.09  566.58   668243  10040    21010   0.280    6400   0.00  0.00

TOTAL                        271630   824104   6.060  975570   4.64  5.03
AVERAGE   560.47               8762    26584           31470 NORMAL= 5.37

MAXIMUM   567.87      707857   DATE=30    TOP CONSERVATION POOL    554.00
MINIMUM   554.13      367709   DATE= 7    TOP FLOOD POOL           582.00

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

                      INFLOW VOLUME=  1935014 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION