End-of-Month Reservoir Contents for April, 2013

                                                         APR                                            -----------------------------                                  ACTIVE             % OF            % OF          STATION - CODE         CAPACITY    2013  CAPACITY   AVG     AVG    ---------------------------   ------    ------    ---   ------    ---    HGH-AF-HUNGRY HORSE DAM & R  2981.20   2244.36H    75  1595.97    141    CMO-AF-COMO DAM AND LAKE ON    35.10     21.61V    62    19.91    109                                                                                    Yakima River Basin                                                              CLE-AF-CLE ELUM LAKE, WA      436.90    384.62T    88   295.90R   130    KAC-AF-KACHESS LAKE, WA       239.00    229.83T    96   194.20    118    KEE-AF-KEECHELUS LAKE, WA     157.80    145.69T    92   114.00    128    RIM-AF-TIETON DAM & RIMROCK   198.00    177.29T    90   136.80    130    BUM-AF-BUMPING LAKE, WA        33.70     20.67T    61    11.60R   178                                                                                    Columbia Basin                                                                  GCL-AF-GRAND COULEE DAM & F  5185.45   2828.07V    55  1108.60    255    BNK-AF-BANKS LAKE NR GRAND    715.00    705.95V    99   498.24    142    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    649.37V    77   456.46    142    PAL-AF-PALISADES RESERVOIR   1200.00    556.65V    46   749.73     74    ISL-AF-ISLAND PARK RESERVOI   135.20    126.39V    93   126.04    100    GRS-AF-GRASSY LAKE NR MORAN    15.20     13.31V    88    11.70    114    RIR-AF-RIRIE RESERVOIR NEAR    80.50     61.98V    77    53.48E   116    AMF-AF-AMERICAN FALLS RES A  1672.60   1574.49V    94  1545.67    102    MIN-AF-MINIDOKA DAM & LAKE     95.20     88.43V    93    94.37     94    WOD-AF-LITTLE WOOD RESERVOI    30.00     28.73V    96    25.24    114                                                                                    Boise River Basin                                                               AND-AF-ANDERSON RANCH RES A   413.10    268.05V    65   286.00     94    ARK-AF-ARROWROCK RESERVOIR    272.20    183.08V    67   203.96     90    LUC-AF-LUCKY PEAK LAKE NEAR   264.40    189.17V    72   163.83    115    LOW-AF-LAKE LOWELL, ID        159.37    125.61V    79   151.40     83                                                                                    Payette River Basin                                                             CSC-AF-CASCADE RESERVOIR AT   646.46    559.45V    87   380.52    147    DED-AF-DEADWOOD RESERVOIR N   161.90    115.68V    71   102.64    113                                                                                    Weiser River Basin                                                              MAN-AF-MANN CR DAM & RES ON    11.10     10.92V    98     9.96E   110                                                                                    Clearwater River Basin                                                          RES-AF-LEWISTON ORCHARDS RE     3.00      1.94V    65     3.08E    63    SOL-AF-SOLDIERS MEADOW DAM,     2.37      2.16V    91     1.63E   133    WAH-AF-WAH                                                                                                     Owyhee River Basin                                                              OWY-AF-LAKE OWYHEE NEAR NYS   715.00    352.87V    49   607.35     58    WLD-AF-WILDHORSE RESERVOIR     71.50     32.24V    45    47.20     68                                                                                    Malheur River Basin                                                             BEU-AF-AGENCY VALLEY DAM &     59.90     36.16V    60    50.22     72    BUL-AF-BULLY CREEK RESERVOI    30.00     16.08V    54    25.23E    64    WAR-AF-WARM SPRINGS RESERVO   191.00     85.08V    45   145.56     58                                                                                    Powder River Basin                                                              PHL-AF-MASON DAM & PHILLIPS    73.50     42.12V    57    58.61E    72    THF-AF-THIEF VALLEY RESERVO    17.40     13.45V    77    17.46E    77                                                                                    Burnt River Basin                                                               UNY-AF-UNITY RESERVOIR NEAR    25.20     22.05V    88    24.58     90                                                                                    Umatilla River Basin                                                            MCK-AF-MCKAY RESERVOIR NR P    66.26     62.62V    95    58.65    107    CLS-AF-COLD SPRINGS DAM & R    38.33     23.01V    60    46.82     49                                                                                    Deschutes River Basin                                                           CRA-AF-CRANE PRAIRIE DAM &     55.30     51.03V    92    44.04    116    CRE-AF-CRESCENT LK DAM & LK    86.90     74.82V    86    56.69    132    WIC-AF-WICKIUP DAM & RES ON   200.00    183.75V    92   189.90     97    OCH-AF-OCHOCO DAM & RES ON     45.24     32.69V    72    39.09     84    PRV-AF-ARTHUR R BOWMAN DAM    152.80    147.58V    97   147.59    100    HAY-AF-HAYSTACK DAM & RES O     5.64      4.43V    79     5.02E    88    WAS-AF-WASCO DAM & CLEAR LA    11.90      8.16V    69     6.80    120                                                                                    Rogue River Basin                                                               AGA-AF-AGATE DAM AND RES ON     4.70      4.66V    99     4.67E   100    EMI-AF-EMIGRANT DAM & LK ON    39.00     37.99V    97    37.02    103    FIS-AF-FISH LK NR LAKE CR,      7.90      5.70V    72     6.06E    94    FOR-AF-FOURMILE LAKE, OR       15.60     10.30V    66    10.54E    98    HPD-AF-HOWARD PRAIRIE DAM &    60.60     51.46V    85    51.60E   100    HYA-AF-HYATT DAM & RES NR A    16.00     15.52V    97    14.02E   111                                                                                    Tualatin River Basin                                                            SCO-AF-SCOGGINS DAM AND HEN    53.60     51.52V    96    52.23E    99                                                                                                                  ------    ------    ---   ------    ---      TOTAL OF 50 RESERVOIRS    18035.01  12678.77     70 10087.88    126                                                                                    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.