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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 SEP 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  760.60     6359
 1   760.59  760.57     6335      0        0   0.400       0   0.00  0.00
 2   760.56  760.54     6312      0        0   0.300       0   0.00  0.00
 3   760.54  760.51     6288      0        0   0.200       0   0.00  0.00
 4   760.50  760.48     6264      0        0   0.250       0   0.22  0.16
 5   760.48  760.48     6264      0        0   0.230       0   0.00  0.00

 6   760.48  760.46     6248      0        0   0.080       0   0.00  0.00
 7   760.47  760.60     6359      0        0   0.240      35   0.00  0.00
 8   760.62  760.62     6375      0        0   0.230      15   1.96  1.74
 9   760.62  760.61     6367      0        0   0.300       0   0.00  0.00
10   760.61  760.85     6556      0        0   0.200     100   0.00  0.02

11   760.90  761.50     7114      0        0   0.100     200   2.67  2.42
12   761.60  761.47     7087      0        1   0.060      50   0.79  0.69
13   761.46  761.54     7149      0        0   0.150      50   0.00  0.04
14   761.54  761.53     7140      0        1   0.140      20   0.00  0.00
15   761.53  761.51     7122      0        1   0.720       0   0.00  0.00

16   761.51  761.50     7114      0        0   0.010       0   0.00  0.00
17   761.50  761.49     7105      0        0   0.140       0   0.00  0.00
18   761.40  761.48     7096      0        0   0.150       0   0.02  0.02
19   761.48  761.62     7219      0        1   0.080      60   0.03  0.03
20   761.83  761.98     7534      0       25   0.160     200   2.02  1.69

21   761.97  761.93     7491      0       35   0.090      20   0.00  0.00
22   761.91  761.86     7429      0       27   0.220       0   0.01  0.01
23   761.85  761.82     7394      0       21   0.170       0   0.00  0.00
24   761.81  761.79     7368      0       17   0.160       0   0.00  0.00
25   761.85  761.88     7447      0       22   0.180      50   0.85  0.77

26   761.89  761.88     7447      0       26   0.000      40   0.17  0.17
27   761.87  761.89     7456      0       26   0.160      30   0.10  0.09
28   761.89  761.90     7464      0       26   0.050      20   0.24  0.18
29   761.89  761.79     7368      0       22   0.030      10   0.36  0.29
30   761.78  761.75     7333      0       15   0.140       5   0.00  0.00

TOTAL                             0      266   5.340     905   9.44  8.32
AVERAGE   761.33                  0        9              30 NORMAL= 3.98

MAXIMUM   761.98        7534   DATE=20    TOP CONSERVATION POOL    761.50
MINIMUM   760.43        6225   DATE= 7    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=     1795 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION