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                                  Keystone Lake
                          MONTHLY LAKE REPORT
                                 SEP 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  724.38   465205
 1   724.49  724.28   463366   3892     3962   0.250    3150   0.00  0.00
 2   724.38  724.15   460975   3896     3966   0.190    2875   0.25  0.03
 3   724.35  724.11   460238   3925     3995   0.190    3700   0.29  0.06
 4   724.25  724.09   459871   3858     3928   0.140    3800   0.06  0.01
 5   724.20  724.20   461894   1963     2033   0.100    3125   0.33  0.04

 6   724.32  724.54   468600      0       70   0.120    3550   0.00  0.01
 7   724.66  724.67   471412   1208     1278   0.160    2850   0.00  0.02
 8   724.72  724.48   467302   3404     3474   0.230    1500   0.00  0.12
 9   724.49  723.96   457480   7775     7795   0.190    2925   0.05  0.31
10   723.69  723.72   453064  11650    11650   0.120    9425   0.30  0.17

11   723.86  724.20   461894  11646    11646   0.000   16150   0.05  0.16
12   724.47  725.21   483092  11704    11704   0.100   22425   0.02  0.35
13   725.59  726.27   507424  11708    11708   0.060   24000   0.00  0.35
14   726.44  726.48   512404  11504    11504   0.030   14000   0.02  0.07
15   726.53  726.91   522934  11529    11529   0.000   16850   0.00  0.00

16   727.08  727.40   534935  11496    11496   0.030   17600   0.07  0.03
17   727.50  727.57   539312  11379    11379   0.070   13700   0.14  0.06
18   727.59  727.61   540342  11400    11400   0.150   12025   0.12  0.01
19   727.59  727.47   536736  11392    11392   0.140    9725   0.17  0.01
20   727.41  727.18   529547  11396    11396   0.180    7900   0.00  0.06

21   727.02  726.82   520731  11442    11442   0.180    7050   0.00  0.01
22   726.64  726.38   509981  11429    11429   0.080    6050   0.34  0.08
23   726.26  725.96   500219  11600    11600   0.070    6775   0.01  0.06
24   725.74  725.36   486336  11633    11633   0.120    4675   0.00  0.00
25   725.09  724.60   469898  11638    11638   0.070    3475   0.00  0.00

26   724.69  724.71   472278   2196     2196   0.210    3525   0.00  0.09
27   724.82  724.84   475090   2167     2167   0.190    3785   0.00  0.00
28   724.93  724.76   473359   2933     2933   0.320    2200   0.00  0.00
29   724.83  724.64   470764   2929     2929   0.240    1750   0.00  0.00
30   724.69  724.49   467519   3154     3154   0.190    1650   0.00  0.00

TOTAL                        227846   228426   4.120  232210   2.22  2.11
AVERAGE   725.37               7595     7614            7740 NORMAL= 3.38

MAXIMUM   727.61      540342   DATE=18    TOP CONSERVATION POOL    723.00
MINIMUM   723.62      451225   DATE=10    TOP FLOOD POOL           754.00

                      INFLOW VOLUME=   460582 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION