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                                   Cheney Lake
                          MONTHLY LAKE REPORT
                                 JUN 09


    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 1422.65   177284
 1  1422.57 1422.40   174819      0     1232   0.520     200   0.00  0.00
 2  1422.34 1422.43   175115      0     1136   0.430    1000   0.00  0.00
 3  1422.30 1422.22   173044      0      980   0.730     600   1.61  1.06
 4  1422.16 1422.08   171663      0      979   0.310     450   0.00  0.00
 5  1422.01 1421.88   169735      0      977   0.270     250   0.00  0.00

 6  1421.82 1421.73   168309      0      672   0.430     200   0.00  0.00
 7  1421.70 1421.86   169545      0      489   0.410     350   0.00  0.00
 8  1421.73 1421.64   167454      0      194   0.440     200   0.10  0.35
 9  1421.63 1421.66   167645      0        0   0.290     180   0.00  0.00
10  1421.67 1421.67   167740      0        0   0.230     160   0.00  0.00

11  1421.69 1421.67   167740      0        0   0.050     140   0.09  0.08
12  1421.74 1421.81   169070      0        0   0.280     800   0.66  0.51
13  1421.81 1421.81   169070      0        0   0.280     140   0.31  0.12
14  1421.83 1421.82   169164      0        0   0.210     140   0.04  0.13
15  1421.84 1421.87   169640      0        0   0.140     400   0.07  0.07

16  1421.85 1421.90   169925      0        0   0.370     400   0.19  0.73
17  1421.91 1421.90   169925      0      235   0.290     400   0.00  0.00
18  1421.86 1421.84   169354      0      489   0.540     400   0.00  0.02
19  1421.82 1421.82   169164      0      397   0.510     450   0.00  0.00
20  1421.83 1421.88   169735      0      245   0.240     650   0.35  0.07

21  1421.89 1421.90   169925      0      245   0.190     500   0.75  1.27
22  1421.93 1421.98   170685      0      245   0.420     850   0.00  0.06
23  1421.97 1422.00   170875      0      245   0.460     500   0.00  0.00
24  1422.00 1421.98   170685      0      245   0.360     450   0.00  0.00
25  1422.01 1422.00   170875      0      245   0.320     400   0.00  0.00

26  1422.02 1421.97   170590      0      245   0.460     350   0.00  0.00
27  1421.95 1421.92   170115      0      245   0.480     230   0.00  0.00
28  1421.91 1421.87   169640      0      245   0.450     210   0.00  0.00
29  1421.86 1421.82   169164      0      244   0.320     190   0.00  0.00
30  1421.83 1421.75   168500      0      244   0.480     110   0.00  0.00

TOTAL                             0    10472   10.910   11300   4.17  4.47
AVERAGE  1421.90                  0      349             377 NORMAL= 3.97

MAXIMUM  1422.65      177284   DATE= 1    TOP CONSERVATION POOL   1421.60
MINIMUM  1421.63      167359   DATE= 9    TOP FLOOD POOL          1429.00

WATER SUPPLY:  WITHDRAWN   4345 AC-FT

                      INFLOW VOLUME=    22413 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION