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                               Ft Gibson Lake, OK
                          MONTHLY LAKE REPORT
                                 MAY 99


    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  577.51  1070944
 1   577.35  576.85  1041864   9805    62276   0.270   50000   0.00  0.00
 2   576.76  576.28  1017413   9948    61374   0.330   48000   0.00  0.00
 3   576.04  575.47   983404   9888    53131   0.190   36000   0.00  0.00
 4   575.76  576.53  1028138   9724    36419   0.180   60000   2.49  1.07
 5   577.80  579.10  1143129   9612    42486   0.180  100000   0.88  1.69

 6   579.22  579.92  1181915   9648    62796   0.260   83000   0.01  0.15
 7   580.22  580.40  1205141   9640    69272   0.340   81500   0.00  0.00
 8   580.42  579.93  1182389   9648    71239   0.360   60000   0.00  0.00
 9   579.61  578.52  1116465   9640    69272   0.330   36300   0.00  0.00
10   577.90  577.44  1067836   9736    57683   0.180   33300   0.00  0.04

11   577.20  576.79  1039290   9772    56312   0.110   42000   0.11  0.05
12   577.10  577.27  1060289   9596    40670   0.230   51500   3.08  1.57
13   577.07  576.53  1028138   9712    48291   0.110   32000   0.11  0.03
14   576.14  575.19   971785   9912    58103   0.300   30000   0.00  0.00
15   574.67  573.70   912221  10116    59092   0.350   29000   0.00  0.00

16   573.20  572.29   858716  10204    56071   0.200   29000   0.00  0.00
17   571.79  572.26   857598  10148    45310   0.230   45000   0.30  0.36
18   572.60  572.68   873264  10048    40874   0.150   49000   0.74  1.29
19   572.81  572.78   876995   9968    42785   0.300   45000   0.00  0.00
20   572.65  571.93   845394  10084    48797   0.310   33100   0.00  0.00

21   571.68  571.34   824273  10192    42870   0.260   32000   0.49  0.69
22   571.10  570.65   799991  10258    39690   0.150   27000   0.27  0.31
23   570.61  570.96   810717  10192    27209   0.170   33000   0.92  1.34
24   570.98  571.15   817471  10112    20119   0.210   25000   0.00  0.08
25   571.10  571.19   818902   9966    22166   0.290   23500   0.00  0.00

26   571.08  570.88   807948  10044    25238   0.060   20000   0.07  0.26
27   570.59  570.65   799991  10076    25159   0.260   21500   0.00  0.00
28   570.37  570.16   783035  10184    29318   0.310   21000   0.00  0.00
29   569.94  569.39   757127  10296    34914   0.270   22000   0.00  0.00
30   568.95  568.44   726068  10396    35570   0.150   20000   0.00  0.04
31   568.10  567.69   702259  10446    35113   0.270   23500   0.31  0.94

TOTAL                        309011  1419619   7.310 1242200   9.78  9.91
AVERAGE   574.01               9968    45794           40071 NORMAL= 5.37

MAXIMUM   580.42     1206111   DATE= 8    TOP CONSERVATION POOL    554.00
MINIMUM   567.69      702259   DATE=31    TOP FLOOD POOL           582.00

                      INFLOW VOLUME=  2463867 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION