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                                  Big Hill Lake
                          MONTHLY LAKE REPORT
                                 MAY 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  858.68    27788
 1   858.63  858.57    27656      0       63   0.010       5   0.00  0.00
 2   858.54  858.48    27547      0       46   0.260       5   0.00  0.00
 3   858.46  858.41    27463      0       35   0.220       5   0.00  0.00
 4   858.38  858.36    27403      0       28   0.310       5   0.00  0.00
 5   858.33  858.32    27355      0       23   0.360       5   0.00  0.00

 6   858.33  858.31    27343      0       22   0.190      20   0.00  0.00
 7   858.30  858.29    27318      0       20   0.090       5   0.16  0.16
 8   858.29  858.24    27258      0       18   0.223       5   0.03  0.17
 9   858.22  858.26    27282      0       16   0.240      30   0.00  0.00
10   858.28  858.27    27294      0       18   0.030      35   0.41  0.42

11   858.25  858.26    27282      0       17   0.280      20   0.00  0.00
12   858.22  858.22    27234      0       15   0.410      10   0.00  0.00
13   858.22  858.19    27198      0       14   0.320       5   0.00  0.00
14   858.17  858.17    27174      0       12   0.390       5   0.00  0.00
15   858.16  858.17    27174      0       12   0.200      20   0.00  0.00

16   858.15  858.13    27126      0       10   0.410      15   0.22  0.18
17   858.13  858.12    27114      0        8   0.410      10   0.00  0.00
18   858.10  858.10    27089      0        7   0.420       5   0.00  0.00
19   858.09  858.08    27065      0        6   0.270       5   0.00  0.00
20   858.07  858.08    27065      0        5   0.330       5   0.00  0.00

21   858.05  858.05    27029      0        4   0.277       5   0.00  0.00
22   858.04  858.06    27041      0        3   0.303       5   0.00  0.00
23   858.03  858.02    26993      0        2   0.240       5   0.00  0.00
24   858.01  858.01    26981      0        1   0.200       5   0.00  0.00
25   858.06  858.05    27029      0        3   0.320      20   0.55  0.55

26   858.04  858.04    27017      0        3   0.220       5   0.00  0.00
27   858.03  858.02    26993      0        2   0.110       5   0.35  0.26
28   858.02  858.01    26981      0        1   0.250       5   0.00  0.00
29   858.01  858.00    26969      0        0   0.340       5   0.00  0.00
30   857.99  857.97    26934      0        0   0.320       3   0.00  0.00
31   857.97  857.96    26922      0        0   0.430       3   0.00  0.00

TOTAL                             0      413   8.383     286   1.72  1.74
AVERAGE   858.17                  0       13               9 NORMAL= 5.30

MAXIMUM   858.68       27788   DATE= 1    TOP CONSERVATION POOL    858.00
MINIMUM   857.96       26922   DATE=31    TOP FLOOD POOL           867.50

                      INFLOW VOLUME=      567 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION