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                                  Keystone Lake
                          MONTHLY LAKE REPORT
                                 APR 97


    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  722.77   500342
 1   722.84  722.70   498809   3185     3185   0.230    2550   0.00  0.00
 2   722.74  722.65   497713   3446     3446   0.200    3000   0.00  0.00
 3   722.79  722.86   502313   3172     3172   0.130    5600   0.00  0.01
 4   723.00  722.98   504942   4126     4126   0.200    5450   0.16  0.48
 5   722.93  723.08   507225   5299     5299   0.010    6700   0.31  0.77

 6   722.96  722.84   501876   3636     3636   0.410    3000   0.00  0.03
 7   722.88  722.79   500780   3717     3717   0.140    3200   0.00  0.00
 8   723.06  723.77   523131   4417     4417   0.180   15500   0.38  0.19
 9   724.16  724.37   537357   5912    11509   0.010   18600   1.15  0.50
10   724.39  724.33   536393   6147    15344   0.090   14500   0.00  0.03

11   724.75  726.81   598471   6177    21777   0.100   53000   1.83  1.96
12   727.98  730.53   703700   8875    33798   0.100   87000   0.10  0.04
13   732.08  734.52   831765  12056    36504   0.100  101200   0.00  0.05
14   735.22  735.91   879245  11788    40748   0.100   65000   0.00  0.01
15   735.96  735.58   867903  11725    45260   0.360   39950   0.00  0.00

16   735.34  734.82   841889   7585    44850   0.310   31850   0.31  0.10
17   734.55  733.91   811244   6004    44414   0.120   29150   0.27  0.05
18   733.58  733.04   782533   6049    40909   0.200   26600   0.00  0.00
19   732.81  732.35   760341   5895    34907   0.150   23950   0.00  0.00
20   732.06  731.55   735063    599    34517   0.240   22100   0.00  0.00

21   731.27  730.48   702187   6166    36663   0.330   20400   0.00  0.00
22   730.06  729.10   661417   6264    39639   0.380   19350   0.38  0.11
23   728.60  727.40   614193   6359    39421   0.300   15650   0.00  0.00
24   726.90  725.85   573757   6426    38184   0.060   17850   0.00  0.00
25   725.34  724.88   549660   6524    29205   0.050   17050   0.03  0.17

26   724.83  724.72   545800   6410    18186   0.010   16275   0.14  0.26
27   724.69  724.59   542665   6424    18072   0.040   16650   0.15  0.24
28   724.54  724.44   539046   6456    17960   0.200   16250   0.00  0.00
29   724.41  724.32   536152   6467    17825   0.190   16550   0.00  0.00
30   724.32  723.79   523591   8342    19509   0.230   13300   0.00  0.00

TOTAL                        185648   710199   5.170  727225   5.21  5.00
AVERAGE   727.37               6188    23673           24241 NORMAL= 2.78

MAXIMUM   735.96      880966   DATE=15    TOP CONSERVATION POOL    723.00
MINIMUM   722.63      497275   DATE= 2    TOP FLOOD POOL           754.00

WATER SUPPLY:  WITHDRAWN      0 AC-FT, RELEASED      0 AC-FT

                      INFLOW VOLUME=  1442429 AC-FT



REPORT IS SUBJECT TO CHANGE AND/OR REVISION