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                                  Foss 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 1643.66   189493
 1  1643.64 1643.56   188782      0      608   0.200     370   0.00  0.00
 2  1643.53 1643.46   188070      0      673   0.240     350   0.00  0.00
 3  1643.53 1643.36   187360      0      673   0.490     350   0.00  0.00
 4  1643.32 1643.22   186364      0      672   0.310     320   0.00  0.00
 5  1643.19 1643.10   185511      0      672   0.160     300   0.00  0.00

 6  1643.09 1643.10   185511      0      564   0.350     500   0.00  0.00
 7  1643.09 1642.98   184662      0      608   0.380     320   0.20  0.23
 8  1642.95 1642.85   183765      0      670   0.200     310   0.00  0.00
 9  1642.83 1642.73   182937      0      670   0.350     300   0.00  0.00
10  1642.70 1642.59   181971      0      669   0.300     290   0.00  0.00

11  1642.56 1642.45   181005      0      668   0.290     280   0.00  0.00
12  1642.37 1642.31   180039      0      668   0.370     270   0.00  0.00
13  1642.31 1642.20   179280      0      667   0.540     270   0.00  0.00
14  1642.14 1642.05   178245      0      667   0.300     260   0.00  0.00
15  1642.06 1641.91   177299      0      666   0.320     270   0.00  0.00

16  1641.89 1641.82   176697      0      558   0.250     280   0.15  0.15
17  1641.79 1641.78   176431      0      385   0.190     270   0.00  0.00
18  1641.77 1641.76   176297      0      330   0.180     250   0.00  0.00
19  1641.74 1641.70   175896      0      329   0.220     240   0.00  0.06
20  1641.70 1641.68   175763      0      329   0.250     240   0.00  0.01

21  1641.67 1641.64   175495      0      329   0.150     250   0.10  0.06
22  1641.63 1641.64   175495      0      257   0.220     240   0.00  0.00
23  1641.63 1641.61   175295      0      221   0.260     240   0.00  0.00
24  1641.62 1641.61   175295      0      221   0.120     240   0.00  0.00
25  1641.60 1641.60   175228      0      221   0.670     230   0.00  0.00

26  1641.62 1641.68   175763      0      221   0.440     500   0.00  0.04
27  1641.68 1641.72   176029      0      221   0.083     400   1.10  0.47
28  1641.74 1641.71   175963      0      221   0.090     320   0.20  0.12
29  1641.71 1641.76   176297      0      221   0.170     300   0.00  0.00
30  1641.77 1641.78   176431      0      221   0.100     300   0.00  0.00

TOTAL                             0    14104   8.193    9060   1.75  1.14
AVERAGE  1642.25                  0      470             302 NORMAL= 2.12

MAXIMUM  1643.66      189493   DATE= 1    TOP CONSERVATION POOL   1642.00
MINIMUM  1641.59      175161   DATE=24    TOP FLOOD POOL          1662.20

                      INFLOW VOLUME=    17970 AC-FT

USGS ADJ LAKE ELEV +0.06 FT @1900 HRS 4/29/98


REPORT IS SUBJECT TO CHANGE AND/OR REVISION