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                                   Copan Lake
                          MONTHLY LAKE REPORT
                                 MAY 07


    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  710.76    38947
 1   710.79  710.94    39969      0      211   0.140     700   0.25  0.34
 2   711.08  711.46    42919      0      518   0.000    2000   0.64  0.74
 3   711.67  712.22    47234      0      990   0.000    3000   0.10  0.30
 4   712.37  712.40    48257      0     1499   0.000    2000   0.20  0.38
 5   712.34  712.18    47006      0     1662   0.000    1000   0.00  0.00

 6   712.09  711.75    44565      0     1650   0.000     450   0.01  0.02
 7   712.99  715.74    67246      0      471   0.100   11000   2.73  2.69
 8   716.71  718.41    85969      0        5   0.000    9000   0.31  0.25
 9   718.99  719.69    95128      0      854   0.000    5000   0.47  0.47
10   719.91  720.12    98381      0     1952   0.000    3600   0.00  0.03

11   720.35  720.72   103556      0     2223   0.000    4900   0.01  1.01
12   720.83  720.93   105368      0     2240   0.230    3200   0.01  0.02
13   720.93  720.76   103902      0     2670   0.280    2000   0.00  0.00
14   720.64  720.41   100882      0     2901   0.280    1400   0.00  0.00
15   720.26  719.98    97203      0     2880   0.260    1000   0.00  0.00

16   719.75  719.39    92982      0     2848   0.060     750   0.26  0.47
17   719.18  718.65    87687      0     2959   0.250     350   0.00  0.00
18   718.37  717.80    81604      0     2968   0.260     200   0.00  0.00
19   717.50  716.89    75093      0     2905   0.260     150   0.00  0.00
20   716.56  715.92    68269      0     2835   0.250      50   0.00  0.00

21   715.60  714.87    62300      0     2760   0.240      50   0.00  0.00
22   714.53  713.83    56387      0     2682   0.250      50   0.15  0.03
23   713.51  712.75    50247      0     2603   0.090      25   0.00  0.00
24   712.40  711.72    44394      0     2526   0.170     100   0.06  0.26
25   711.34  711.05    40593      0     1582   0.000     100   0.58  0.39

26   710.99  710.85    39458      0      413   0.000      50   0.00  0.00
27   710.78  710.79    39117      0      308   0.000     100   0.03  0.02
28   710.75  710.75    38890      0      308   0.000     100   0.49  0.43
29   710.72  710.69    38550      0      307   0.110     150   0.16  0.18
30   710.69  710.65    38323      0      307   0.130     200   0.00  0.11
31   710.64  710.59    37982      0      307   0.100     200   0.01  0.05

TOTAL                             0    51344   3.460   52875   6.47  8.19
AVERAGE   715.00                  0     1656            1706 NORMAL= 5.00

MAXIMUM   720.93      105368   DATE=13    TOP CONSERVATION POOL    710.00
MINIMUM   710.59       37982   DATE=31    TOP FLOOD POOL           732.00

                      INFLOW VOLUME=   104876 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION