LibbyDamOps4 21 08

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					                            EAST CREEK SNOW PILLOW STATION
                            WEST KOOTENAY BASIN - EL 6660 FT
                             historical median value (1981-2006)


          1600


          1400


          1200


          1000
SWE, mm




                                                                                Median
          800                                                                   2008
                                                                                1999

          600


          400


          200


            0
             12/1   1/20   3/10                      4/29          6/18   8/7
                             FLOE LAKE SNOW PILLOW STATION
                             EAST KOOTENAY BASIN - EL 6857 FT
                             historical median value (1992-2006)


          1200




          1000




          800
SWE, mm




                                                                                Median
          600                                                                   2008
                                                                                1999


          400




          200




            0
             12/1   1/20   3/10                       4/29         6/18   8/7
                              GARVER CREEK SNOW PILLOW STATION
                                  KOOTENAI BASIN - EL 4250 FEET
                                historical median value (1969-2006)


              20


              18


              16


              14
SWE, INCHES




              12
                                                                                   MEDIAN
              10                                                                   2008
                                                                                   1997
              8


              6


              4


              2


              0
               12/1   1/20   3/10                     4/29            6/18   8/7
                              HAWKINS LAKE SNOW PILLOW STATION
                                  KOOTENAI BASIN - EL 6450 FEET
                                historical median value (1969-2007)


              60




              50




              40
SWE, INCHES




                                                                                   MEDIAN
              30                                                                   2008
                                                                                   1974


              20




              10




              0
               12/1   1/20   3/10                     4/29            6/18   8/7
                                  STAHL SNOW PILLOW STATION
                                  KOOTENAI BASIN - EL 6030 FEET
                                historical median value (1975-2007)


              60




              50




              40
SWE, INCHES




                                                                                   MEDIAN
              30                                                                   2008
                                                                                   1996


              20




              10




              0
               12/1   1/20   3/10                       4/29          6/18   8/7
                            MOYIE MTN SNOW PILLOW STATION
                              KOOTENAI BASIN - EL 6332 FEET
                            historical median value (1972-2007)


          800


          700


          600


          500
SWE, mm




                                                                               Median
          400                                                                  2008
                                                                               1999

          300


          200


          100


           0
            12/1   1/20   3/10                      4/29          6/18   8/7
                            MOYIE MTN SNOW PILLOW STATION
                              KOOTENAI BASIN - EL 6332 FEET
                            historical median value (1972-2007)


          800


          700


          600


          500
SWE, mm




                                                                               Median
          400                                                                  2008
                                                                               1999

          300


          200


          100


           0
            12/1   1/20   3/10                      4/29          6/18   8/7
                                      April - August Volume Inflow Forecasts, MAF

                            7.00                6.50          6.55
                                                                          6.39
                                     6.29
Volume, million acre-feet

                                                                  6.19        6.21
                                         5.96      5.96
                            6.00

                            5.00

                            4.00

                            3.00

                            2.00

                            1.00

                            0.00
                                   January February         March        April       May       June
                                                          Final Forecast, Month

                                   1929-1999 Avg                 Corps 2008                RFC 2008
                                                        Libby Reservoir
                                                  January 01, 2008 to July 01, 2008
                    2460                                                                                                45


                                                                                                                        40
                    2440
                                                                        FORECAST DATA
                                                                                                                        35
                                                                        BASED ON APR 15
                                                                        STP MODEL RUN
                    2420                                                                                                30
Elevation in Feet




                                                                                                                             Flow in kcfs
                                                                                                                        25

                    2400
                                                                                                                        20


                    2380                                                                                                15


                                                                                                                        10

                    2360
                                                                                                                        5


                    2340                                                                                                0
                      1-Jan-08        20-Feb-08             10-Apr-08                 30-May-08             19-Jul-08
                                                                 Date

                      Flood Control   Elevation        Forecast Elevation            Inflow       Outflow          Forecast Inflow          Forecast
                                                                Libby Outflows
                                                             Based on 15 April ESP


                60000



                50000



                40000
Outflow (cfs)




                30000



                20000



                10000



                    0
                         1- 12- 23- 3- 14- 25- 7- 18- 29- 9- 20- 1- 12- 23- 3- 14- 25- 6- 17- 28- 8- 19- 30- 10- 21-
                        Jan Jan Jan Feb Feb Feb Mar Mar Mar Apr Apr May May May Jun Jun Jun Jul Jul Jul Aug Aug Aug Sep Sep
                                                                         2008


                                                25th Percentile           75th Percentile      Daily Mean

				
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