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                                 Ft Gibson Lake, OK
                          MONTHLY LAKE REPORT
                                 APR 98


    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  567.91   709100
 1   568.03  568.10   715119  10125    23189   0.060   26360   0.00  0.06
 2   568.11  568.05   713510  10168    25227   0.150   24630   0.00  0.00
 3   567.97  567.70   702570  10204    27829   0.230   22400   0.00  0.08
 4   567.44  567.00   680800  10348    31377   0.090   20540   0.00  0.00
 5   566.80  566.35   661364  10394    31101   0.150   21430   0.00  0.00

 6   566.14  566.08   653293  10340    24164   0.150   20270   0.00  0.00
 7   566.25  565.58   638805  10448    31361   0.200   24200   0.37  0.28
 8   565.13  564.25   601250  10804    40181   0.160   21370   0.04  0.18
 9   563.80  562.86   563874  10970    38970   0.150   20190   0.00  0.00
10   562.40  561.52   529601  11150    38288   0.080   21120   0.00  0.00

11   561.05  560.20   497400  11328    37120   0.150   21110   0.00  0.00
12   559.75  558.93   467832  11596    36019   0.310   21300   0.00  0.00
13   558.48  557.68   440088  11784    34915   0.270   21060   0.00  0.01
14   557.25  556.78   420803  11840    29684   0.200   20130   0.00  0.00
15   556.61  555.90   402501  11776    24342   0.270   15220   0.00  0.00

16   555.59  555.12   386900  11700    21074   0.170   13270   0.01  0.00
17   554.92  554.71   378903  11372    14394   0.110   10440   0.00  0.00
18   554.57  554.50   374850  11298    13057   0.130   11090   0.00  0.00
19   554.27  554.34   371763  11456    13167   0.140   11680   0.00  0.00
20   553.96  554.40   372920  11474    12067   0.130   12720   0.00  0.00

21   554.19  554.02   365586  11272    11272   0.130    7650   0.00  0.00
22   553.84  553.82   361834  10904    10904   0.130    9110   0.00  0.00
23   553.68  553.70   359590  10904    10904   0.180    9960   0.00  0.00
24   553.38  553.32   352484  11056    11056   0.330    7570   0.00  0.00
25   553.25  553.32   352484   7060     7060   0.180    7130   0.00  0.00

26   553.50  553.72   359963   8728     8728   0.130   12510   0.00  0.00
27   553.41  554.20   369060  11072    11072   0.020   15680   1.30  0.93
28   554.26  554.56   376008  11672    15168   0.040   18720   0.02  0.21
29   554.54  554.61   376973  12807    25281   0.090   25795   0.00  0.00
30   554.63  554.71   378903  11724    29534   0.050   30550   0.00  0.00

TOTAL                        327774   688505   4.580  525205   1.74  1.75
AVERAGE   558.67              10926    22950           17507 NORMAL= 4.17

MAXIMUM   568.11      715442   DATE= 2    TOP CONSERVATION POOL    554.00
MINIMUM   553.09      348184   DATE=25    TOP FLOOD POOL           582.00

                      INFLOW VOLUME=  1041728 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION