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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 JUN 99


    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  762.71     8236
 1   762.71  762.65     8178      0      184   0.250     150   0.41  0.43
 2   762.60  762.43     7966      0      149   0.250      50   0.00  0.00
 3   762.38  762.24     7783      0      102   0.300      30   0.00  0.00
 4   762.21  762.12     7668      0       72   0.270      20   0.00  0.00
 5   762.08  762.01     7562      0       52   0.340      20   0.00  0.00

 6   761.99  761.96     7517      0       39   0.300      20   0.00  0.00
 7   761.96  761.92     7482      0       33   0.090      10   0.10  0.23
 8   761.91  761.88     7447      0       28   0.260      10   0.00  0.01
 9   761.87  761.85     7420      0       23   0.290      30   0.00  0.00
10   761.86  763.69     9257      0      132   0.290    1050   0.57  0.31

11   763.59  763.15     8676      0      417   0.050     150   1.88  0.90
12   762.99  762.74     8265      0      244   0.300      50   0.00  0.00
13   763.19  763.05     8569      0      299   0.330     450   0.14  0.22
14   762.91  762.70     8226      0      223   0.200      50   0.00  0.00
15   762.58  762.41     7947      0      145   0.460      50   0.00  0.00

16   762.33  763.19     8719      0      224   0.320     600   0.00  0.00
17   763.10  762.80     8322      0      267   0.360     100   1.30  0.75
18   762.68  762.49     8024      0      167   0.410      50   0.00  0.00
19   762.41  762.32     7860      0      114   0.360      10   0.00  0.03
20   762.29  762.22     7764      0       88   0.240      50   0.00  0.66

21   762.25  762.29     7831      0       89   0.270     100   0.84  0.76
22   762.26  762.30     7841      0       86   0.290     100   0.03  0.03
23   762.57  764.25     9886      0      458   0.310    1500   1.22  0.91
24   764.05  764.50    10180      0      680   0.310     850   0.14  0.07
25   764.40  763.78     9354      0      709   0.240     300   0.90  0.70

26   763.53  763.14     8666      0      412   0.260     100   0.00  0.00
27   762.97  762.73     8255      0      239   0.500      50   0.00  0.00
28   762.61  762.44     7976      0      154   0.540      25   0.00  0.00
29   762.35  762.23     7773      0      100   0.440       0   0.00  0.00
30   762.22  767.31    13781      0      999   0.320    4000   2.24  1.28

TOTAL                             0     6927   9.150    9975   9.77  7.29
AVERAGE   762.83                  0      231             333 NORMAL= 4.17

MAXIMUM   767.31       13781   DATE=30    TOP CONSERVATION POOL    761.50
MINIMUM   761.85        7420   DATE= 9    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=    19785 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION