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                                  Heyburn Lake
                          MONTHLY LAKE REPORT
                                 FEB 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  763.74     9311
 1   763.52  763.16     8687      0      412   0.010     100   0.00  0.00
 2   763.07  762.78     8303      0      256   0.120      50   0.00  0.00
 3   762.69  762.50     8034      0      168   0.160      50   0.00  0.00
 4   762.46  762.31     7851      0      117   0.140      50   0.00  0.00
 5   762.28  762.18     7725      0       83   0.170      50   0.00  0.00

 6   762.15  762.35     7889      0       72   0.150     100   0.00  0.00
 7   762.58  762.60     8130      0      153   0.030     300   0.74  0.66
 8   762.56  762.47     8005      0      145   0.050      90   0.00  0.01
 9   762.44  762.32     7860      0      115   0.160      40   0.00  0.00
10   762.30  762.20     7745      0       88   0.060      30   0.00  0.00

11   762.20  762.13     7677      0       73   0.180      30   0.10  0.04
12   762.11  762.05     7600      0       57   0.120      30   0.00  0.01
13   762.03  761.99     7543      0       44   0.150      30   0.00  0.00
14   761.97  761.94     7499      0       35   0.140      20   0.00  0.00
15   761.93  761.91     7473      0       30   0.300      20   0.00  0.00

16   761.90  761.89     7456      0       28   0.260      20   0.02  0.01
17   761.88  761.86     7429      0       24   0.150      20   0.00  0.00
18   761.86  761.85     7420      0       23   0.200      20   0.00  0.00
19   761.85  761.84     7412      0       21   0.100      20   0.07  0.03
20   761.84  761.83     7403      0       21   0.060      20   0.00  0.00

21   761.82  761.81     7385      0       19   0.170      15   0.00  0.00
22   761.79  761.80     7377      0       17   0.080      15   0.00  0.00
23   761.79  761.78     7359      0       17   0.090      15   0.00  0.00
24   761.78  761.78     7359      0       15   0.480      15   0.00  0.00
25   761.78  761.78     7359      0       16   0.100      15   0.00  0.00

26   761.78  761.78     7359      0       16   0.100      15   0.00  0.00
27   761.80  761.77     7350      0       16   0.180      15   0.00  0.00
28   761.78  761.77     7350      0       15   0.250      15   0.00  0.00

TOTAL                             0     2098   4.160    1210   0.93  0.76
AVERAGE   762.09                  0       75              43 NORMAL= 1.63

MAXIMUM   763.74        9311   DATE= 1    TOP CONSERVATION POOL    761.50
MINIMUM   761.76        7342   DATE=24    TOP FLOOD POOL           784.00

                      INFLOW VOLUME=     2400 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION