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                                   Copan Lake
                          MONTHLY LAKE REPORT
                                 MAY 04


    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  714.88    62357
 1   714.93  714.73    61504      0     2231   0.110    1000   0.46  0.44
 2   714.55  714.12    58036      0     2206   0.160     500   0.00  0.01
 3   713.90  713.36    53715      0     2164   0.210     100   0.00  0.00
 4   713.07  712.55    49110      0     2115   0.240      10   0.00  0.01
 5   712.24  711.77    44678      0     1882   0.250       5   0.00  0.00

 6   711.59  711.35    42295      0     1140   0.320       5   0.00  0.00
 7   711.22  710.99    40252      0      890   0.350       5   0.00  0.00
 8   710.89  710.58    37926      0      879   0.220       5   0.00  0.00
 9   710.49  710.25    36053      0      867   0.290       5   0.00  0.00
10   710.13  710.10    35201      0      414   0.230       5   0.00  0.00

11   710.09  710.11    35258      0       86   0.170       5   0.00  0.02
12   710.08  710.09    35145      0       28   0.180       5   0.00  0.01
13   710.17  710.40    36904      0        5   0.040     900   0.31  0.37
14   710.71  711.43    42749      0      408   0.000    3360   1.00  1.71
15   711.80  712.27    47518      0      895   0.070    3300   0.06  0.05

16   712.44  712.62    49508      0      909   0.140    1500   0.00  0.00
17   712.69  712.76    50304      0      915   0.130     900   0.00  0.00
18   712.74  712.71    50019      0      916   0.140     780   0.00  0.00
19   712.67  712.49    48769      0      913   0.070     330   0.05  0.04
20   712.44  712.27    47518      0      907   0.220     200   0.00  0.00

21   712.12  711.93    45586      0      899   0.310     100   0.00  0.00
22   711.75  711.46    42919      0      888   0.280      50   0.00  0.00
23   711.39  711.13    41047      0      879   0.180      25   0.00  0.00
24   710.95  710.70    38607      0      868   0.230      10   0.00  0.00
25   710.57  710.43    37074      0      577   0.180      10   0.01  0.01

26   710.37  710.21    35826      0      429   0.000      10   0.01  0.00
27   710.14  710.16    35542      0      174   0.060      10   0.00  0.02
28   710.15  710.21    35826      0        5   0.190      10   0.00  0.00
29   710.21  710.14    35429      0        5   0.290      10   0.00  0.00
30   710.24  710.28    36223      0        5   0.160      10   0.00  0.00
31   710.28  710.29    36280      0        5   0.300      10   0.00  0.00

TOTAL                             0    25503   5.720   13175   1.90  2.69
AVERAGE   711.42                  0      823             425 NORMAL= 5.00

MAXIMUM   714.93       62641   DATE= 1    TOP CONSERVATION POOL    710.00
MINIMUM   710.06       34974   DATE=11    TOP FLOOD POOL           732.00

                      INFLOW VOLUME=    26132 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION