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                                  Big Hill Lake
                          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  858.47    27535
 1   858.47  858.43    27487      0       36   0.150      20   0.09  0.13
 2   858.42  858.39    27439      0       31   0.290      20   0.00  0.00
 3   858.41  858.44    27499      0       32   0.250      30   0.48  0.47
 4   858.43  858.39    27439      0       32   0.060      20   0.00  0.00
 5   858.37  858.34    27379      0       27   0.050      20   0.00  0.00

 6   858.34  858.37    27415      0       25   0.280      50   0.00  0.00
 7   858.37  858.39    27439      0       28   0.310      40   0.31  0.25
 8   858.37  858.36    27403      0       27   0.180      20   0.00  0.00
 9   858.38  858.32    27355      0       25   0.100      20   0.00  0.01
10   858.30  858.28    27306      0       20   0.145      10   0.00  0.00

11   858.27  858.25    27270      0       18   0.260      10   0.00  0.00
12   858.24  858.21    27222      0       15   0.480      10   0.00  0.00
13   858.21  858.20    27210      0       14   0.540      10   0.00  0.00
14   858.19  858.22    27234      0       13   0.450      40   0.00  0.00
15   858.22  858.24    27258      0       16   0.310      20   0.26  0.29

16   858.22  858.22    27234      0       15   0.240      10   0.00  0.00
17   858.20  858.19    27198      0       13   0.130      10   0.00  0.00
18   858.19  858.17    27174      0       12   0.230      10   0.00  0.00
19   858.17  858.16    27162      0       11   0.210      10   0.00  0.00
20   858.15  858.13    27126      0       10   0.180       8   0.00  0.00

21   858.13  858.12    27114      0        9   0.130       5   0.00  0.00
22   858.11  858.10    27089      0        8   0.243       5   0.00  0.00
23   858.09  858.08    27065      0        6   0.290       5   0.00  0.00
24   858.07  858.06    27041      0        5   0.249       5   0.00  0.00
25   858.05  858.04    27017      0        3   0.460       5   0.00  0.00

26   858.06  858.11    27102      0        5   0.460      50   0.28  0.22
27   858.26  858.96    28126      0       56   0.020     570   1.40  1.25
28   859.01  858.94    28102      0      146   0.010     140   0.90  0.93
29   858.88  858.80    27933      0      116   0.020      30   0.00  0.00
30   858.74  858.68    27788      0       86   0.050      15   0.00  0.00

TOTAL                             0      858   6.777    1218   3.72  3.55
AVERAGE   858.32                  0       29              41 NORMAL= 3.78

MAXIMUM   859.01       28186   DATE=28    TOP CONSERVATION POOL    858.00
MINIMUM   858.04       27017   DATE=25    TOP FLOOD POOL           867.50

                      INFLOW VOLUME=     2416 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION