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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 JUL 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  767.31    13781
 1   766.49  765.34    11196      0     1499   0.360     200   0.00  0.01
 2   764.93  763.98     9569      0      897   0.290     100   0.00  0.01
 3   763.66  763.18     8709      0      451   0.620      50   0.00  0.00
 4   763.00  762.74     8265      0      247   0.560      50   0.00  0.00
 5   762.61  762.44     7976      0      153   0.440      30   0.00  0.00

 6   762.53  762.23     7773      0      110   0.500      20   0.00  0.00
 7   762.20  762.16     7706      0       71   0.450      20   0.00  0.00
 8   762.15  762.07     7619      0       61   0.530      30   0.43  0.18
 9   762.04  761.98     7534      0       45   0.490      20   0.00  0.00
10   761.97  761.93     7491      0       35   0.540      20   0.00  0.05

11   761.92  761.89     7456      0       29   0.380      20   0.00  0.01
12   761.88  761.82     7394      0       23   0.400      20   0.04  0.01
13   761.81  761.80     7377      0       18   0.300      15   0.00  0.00
14   761.79  761.78     7359      0       17   0.440      10   0.00  0.00
15   761.78  761.75     7333      0       14   0.580      10   0.00  0.00

16   761.75  761.73     7315      0       12   0.570      10   0.00  0.00
17   761.72  761.71     7298      0       10   0.480      10   0.00  0.00
18   761.71  761.69     7280      0        9   0.480      10   0.00  0.00
19   761.69  761.67     7263      0        8   0.510      10   0.00  0.00
20   761.67  761.66     7254      0        7   0.400      10   0.00  0.00

21   761.65  761.64     7236      0        6   0.510      10   0.00  0.00
22   761.63  761.62     7219      0        5   0.520      10   0.00  0.00
23   761.62  761.60     7201      0        4   0.500      10   0.00  0.00
24   761.60  761.59     7192      0        3   0.490      10   0.00  0.00
25   761.58  761.57     7175      0        2   0.510      10   0.00  0.00

26   761.57  761.55     7157      0        1   0.470      10   0.00  0.00
27   761.55  761.53     7140      0        1   0.540       5   0.00  0.00
28   761.52  761.51     7122      0        0   0.520       4   0.00  0.00
29   761.50  761.48     7096      0        0   0.490       0   0.00  0.00
30   761.48  761.45     7070      0        0   0.530       0   0.00  0.00
31   761.44  761.42     7043      0        0   0.610       0   0.00  0.00

TOTAL                             0     3738   15.010     734   0.47  0.27
AVERAGE   762.02                  0      121              24 NORMAL= 3.01

MAXIMUM   767.31       13781   DATE= 1    TOP CONSERVATION POOL    761.50
MINIMUM   761.42        7043   DATE=31    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=     1456 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION