End-of-Month Reservoir Contents for April, 2008

                                                         APR
                                            -----------------------------
                                  ACTIVE             % OF            % OF
          STATION - CODE         CAPACITY    2008  CAPACITY   AVG     AVG
    ---------------------------   ------    ------    ---   ------    ---
    HGH-AF-HUNGRY HORSE DAM & R  2981.20   1737.47H    58  1595.97    109
    CMO-AF-COMO DAM AND LAKE ON    35.10     18.34V    52    19.91     92
                                                                                
    Yakima River Basin                                                          
    CLE-AF-CLE ELUM LAKE, WA      436.90    156.36O    36   295.90R    53
    KAC-AF-KACHESS LAKE, WA       239.00    157.46O    66   194.20     81
    KEE-AF-KEECHELUS LAKE, WA     157.80     66.35O    42   114.00     58
    RIM-AF-TIETON DAM & RIMROCK   198.00    100.72O    51   136.80     74
    BUM-AF-BUMPING LAKE, WA        33.70      5.83O    17    11.60R    50
                                                                                
    Columbia Basin                                                              
    GCL-AF-GRAND COULEE DAM & F  5185.45   1096.70V    21  1108.60     99
    BNK-AF-BANKS LAKE NR GRAND    715.00    668.29V    93   498.24    134
    POT-AF-O'SULLIVAN DAM & POT   332.20      ****    ***   261.55    ***
                                                                                
    Okanogan River Basin                                                        
    CCR-AF-CONCONULLY DAM & RES    13.00      ****    ***     8.39    ***
    CCL-AF-SALMON LK DAM & CONC    10.50      ****    ***     8.52    ***
                                                                                
    Snake River Basin                                                           
    JCK-AF-JACKSON LAKE NEAR MO   847.00    361.10V    43   456.46     79
    PAL-AF-PALISADES RESERVOIR   1200.00    525.87V    44   749.73     70
    ISL-AF-ISLAND PARK RESERVOI   135.20    114.66V    85   126.04     91
    GRS-AF-GRASSY LAKE NR MORAN    15.20     13.87V    91    11.70    119
    RIR-AF-RIRIE RESERVOIR NEAR    80.50     46.44V    58    53.48E    87
    AMF-AF-AMERICAN FALLS RES A  1672.60   1305.60V    78  1545.67     84
    MIN-AF-MINIDOKA DAM & LAKE     95.20     91.11V    96    94.37     97
    WOD-AF-LITTLE WOOD RESERVOI    30.00     14.74V    49    25.24     58
                                                                                
    Boise River Basin                                                           
    AND-AF-ANDERSON RANCH RES A   413.10    141.32V    34   286.00     49
    ARK-AF-ARROWROCK RESERVOIR    272.20    243.23V    89   203.96    119
    LUC-AF-LUCKY PEAK LAKE NEAR   264.40    205.37V    78   163.83    125
    LOW-AF-LAKE LOWELL, ID        119.40     85.80V    72   151.40     57
                                                                                
    Payette River Basin                                                         
    CSC-AF-CASCADE RESERVOIR AT   646.46    387.51V    60   380.52    102
    DED-AF-DEADWOOD RESERVOIR N   161.90     73.27V    45   102.64     71
                                                                                
    Weiser River Basin                                                          
    MAN-AF-MANN CR DAM & RES ON    11.10     10.78V    97     9.96E   108
                                                                                
    Clearwater River Basin                                                      
    RES-AF-LEWISTON ORCHARDS RE     3.00      1.08V    36     3.08E    35
    SOL-AF-SOLDIERS MEADOW DAM,     2.37      1.03V    44     1.63E    63
    WAH-AF-WAH                 
                                                                                
    Owyhee River Basin                                                          
    OWY-AF-LAKE OWYHEE NEAR NYS   715.00    452.44V    63   607.35     74
    WLD-AF-WILDHORSE RESERVOIR     71.50     39.92V    56    47.20     85
                                                                                
    Malheur River Basin                                                         
    BEU-AF-AGENCY VALLEY DAM &     59.90     38.86V    65    50.22     77
    BUL-AF-BULLY CREEK RESERVOI    30.00     20.36V    68    25.23E    81
    WAR-AF-WARM SPRINGS RESERVO   191.00     58.45V    31   145.56     40
                                                                                
    Powder River Basin                                                          
    PHL-AF-MASON DAM & PHILLIPS    73.50     30.19V    41    58.61E    52
    THF-AF-THIEF VALLEY RESERVO    17.40     13.51V    78    17.46E    77
                                                                                
    Burnt River Basin                                                           
    UNY-AF-UNITY RESERVOIR NEAR    25.20     23.92V    95    24.58     97
                                                                                
    Umatilla River Basin                                                        
    MCK-AF-MCKAY RESERVOIR NR P    66.26     55.19V    83    58.65     94
    CLS-AF-COLD SPRINGS DAM & R    38.33     27.59V    72    46.82     59
                                                                                
    Deschutes River Basin                                                       
    CRA-AF-CRANE PRAIRIE DAM &     55.30     48.11V    87    44.04    109
    CRE-AF-CRESCENT LK DAM & LK    86.90     49.96V    57    56.69     88
    WIC-AF-WICKIUP DAM & RES ON   200.00    186.36V    93   189.90     98
    OCH-AF-OCHOCO DAM & RES ON     45.24     37.88V    84    39.09     97
    PRV-AF-ARTHUR R BOWMAN DAM    152.80    141.86V    93   147.59     96
    HAY-AF-HAYSTACK DAM & RES O     5.64      4.37V    78     5.02E    87
    WAS-AF-WASCO DAM & CLEAR LA    11.90      1.92V    16     6.80     28
                                                                                
    Rogue River Basin                                                           
    AGA-AF-AGATE DAM AND RES ON     4.70      4.70V   100     4.67E   101
    EMI-AF-EMIGRANT DAM & LK ON    39.00     39.03V   100    37.02    105
    FIS-AF-FISH LK NR LAKE CR,      7.90      5.11V    65     6.06E    84
    FOR-AF-FOURMILE LAKE, OR       15.60     11.62V    75    10.54E   110
    HPD-AF-HOWARD PRAIRIE DAM &    60.60     56.54V    93    51.60E   110
    HYA-AF-HYATT DAM & RES NR A    16.00     16.32V   102    14.02E   116
                                                                                
    Tualatin River Basin                                                        
    SCO-AF-SCOGGINS DAM AND HEN    53.60     53.21V    99    52.23E   102
                                                                                
                                  ------    ------    ---   ------    ---
      TOTAL OF 50 RESERVOIRS    17995.04   9047.74     50 10087.88     90
                                                                                
    AF is acre-feet.
    AVG is published 30-year average, 1961-1990.
    Please note that all data are PROVISIONAL and subject to revision.
    This report is updated monthly, after the 10th of each month.