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                               Ft Gibson Lake, OK
                          MONTHLY LAKE REPORT
                                 APR 03


    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  554.44   373692
 1   554.44  554.56   376008   6997     6997   0.610    8000   0.00  0.00
 2   554.51  554.64   377552   6527     6692   0.280    7600   0.00  0.00
 3   554.64  554.67   378131   6692     6692   0.330    7600   0.00  0.14
 4   554.73  554.70   378710   6503     6503   0.140    7000   0.00  0.00
 5   554.88  554.87   381991   1687     1687   0.150    3500   0.00  0.00

 6   554.97  554.57   376201   8636     8636   0.210    5700   0.00  0.06
 7   554.61  554.79   380447   4251     4251   0.040    6500   0.00  0.29
 8   554.58  554.98   384114   4687     4687   0.190    6500   0.12  0.00
 9   555.17  555.59   396301   3019     3019   0.030    9000   0.00  0.00
10   555.33  555.05   385500   8220     8220   0.170    3500   0.00  0.00

11   554.76  554.51   375043  10825    10825   0.210    5000   0.00  0.00
12   554.45  554.55   375815   1261     1261   0.210    1800   0.00  0.00
13   554.54  554.61   376973    495      495   0.250    1800   0.00  0.00
14   554.56  554.74   379482   4176     4176   0.330    1800   0.00  0.00
15   554.72  554.70   378710   5641     5641   0.430    5400   0.00  0.00

16   554.96  554.84   381413   2181     2181   0.250    3600   0.00  0.08
17   554.81  554.65   377745   4734     4734   0.130    3000   0.40  0.02
18   554.72  554.49   374657   2509     2509   0.200    3000   0.00  0.00
19   554.54  554.93   383149      0        0   0.450    4000   0.00  0.00
20   555.00  554.94   383342    994      994   0.010    2000   0.11  0.24

21   554.95  554.85   381605   4260     4260   0.010    3500   0.00  0.00
22   554.72  554.55   375815   5265     5265   0.270    3000   0.00  0.00
23   554.38  554.27   370411   5340     5340   0.260    3000   0.00  0.00
24   554.21  554.42   373306   1489     1489   0.120    3000   0.88  0.68
25   554.30  554.09   366938   5391     6119   0.290    3500   0.00  0.01

26   553.90  553.96   364452   5559     5982   0.050    4800   0.00  0.00
27   553.88  554.07   366551   5389     5389   0.200    6600   0.00  0.00
28   553.98  554.23   369639   5407     7133   0.350    8800   0.00  0.00
29   554.01  554.27   370411   5478     8653   0.180    9700   0.00  0.02
30   554.21  554.54   375622   5461     8699   0.290   11550   0.00  0.00

TOTAL                        139074   148529   6.640  153750   1.51  1.54
AVERAGE   554.62               4636     4951            5125 NORMAL= 4.17

MAXIMUM   555.59      396301   DATE= 9    TOP CONSERVATION POOL    554.00
MINIMUM   553.80      361460   DATE=27    TOP FLOOD POOL           582.00

                      INFLOW VOLUME=   304959 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION