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                                  Big Hill Lake
                          MONTHLY LAKE REPORT
                                 MAY 97


    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  858.00    26969
 1   857.99  858.05    27029      0        2   0.240      10   0.00  0.00
 2   858.05  858.00    26969      0        1   0.170      10   0.67  0.67
 3   858.00  858.00    26969      0        0   0.210       5   0.00  0.00
 4   858.00  858.00    26969      0        0   0.310       5   0.00  0.00
 5   857.97  857.97    26934      0        0   0.370       5   0.00  0.00

 6   857.96  857.97    26934      0        0   0.260       5   0.00  0.00
 7   857.96  857.98    26945      0        0   0.270      10   0.00  0.01
 8   858.14  858.23    27246      0       11   0.120     160   1.48  1.36
 9   858.21  858.19    27198      0       14   0.220       5   0.00  0.00
10   858.18  858.16    27162      0       11   0.240       5   0.00  0.00

11   858.14  858.13    27126      0        9   0.240       0   0.00  0.00
12   858.12  858.10    27089      0        8   0.250       0   0.00  0.00
13   858.09  858.10    27089      0        6   0.210       5   0.00  0.00
14   858.09  858.07    27053      0        6   0.350       0   0.23  0.22
15   858.06  858.04    27017      0        4   0.210       0   0.00  0.00

16   858.03  858.02    26993      0        2   0.240       0   0.00  0.00
17   858.02  858.00    26969      0        1   0.310       0   0.00  0.00
18   858.00  857.98    26945      0        0   0.320       0   0.00  0.10
19   858.02  858.01    26981      0        1   0.310      20   0.41  0.48
20   858.00  857.99    26957      0        0   0.100       0   0.00  0.01

21   857.97  857.98    26945      0        0   0.220       0   0.00  0.00
22   857.95  857.94    26898      0        0   0.240       0   0.00  0.00
23   857.93  857.93    26886      0        0   0.200       0   0.00  0.00
24   857.92  857.93    26886      0        0   0.090       0   0.00  0.00
25   857.95  857.93    26886      0        0   0.220       0   0.00  0.02

26   857.96  857.97    26934      0        0   0.200      10   0.18  0.18
27   857.96  857.95    26910      0        0   0.210      10   0.14  0.13
28   857.95  857.94    26898      0        0   0.090       5   0.00  0.00
29   857.93  857.94    26898      0        0   0.310       5   0.00  0.00
30   858.13  858.40    27451      0       17   0.240     300   2.04  1.70
31   858.39  858.34    27379      0       28   0.200       5   0.00  0.02

TOTAL                             0      121   7.170     580   5.15  4.90
AVERAGE   858.04                  0        4              19 NORMAL= 5.30

MAXIMUM   858.40       27451   DATE=30    TOP CONSERVATION POOL    858.00
MINIMUM   857.92       26875   DATE=24    TOP FLOOD POOL           867.50

                      INFLOW VOLUME=     1150 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION