End-of-Month Reservoir Contents for May, 2013

                                                         MAY                                            -----------------------------                                  ACTIVE             % OF            % OF          STATION - CODE         CAPACITY    2013  CAPACITY   AVG     AVG    ---------------------------   ------    ------    ---   ------    ---    HGH-AF-HUNGRY HORSE DAM & R  2981.20   2643.07V    89  2212.64    119    CMO-AF-COMO DAM AND LAKE ON    35.10     35.77V   102    28.82    124                                                                                    Yakima River Basin                                                              CLE-AF-CLE ELUM LAKE, WA      436.90    436.37T   100   367.20R   119    KAC-AF-KACHESS LAKE, WA       239.00    238.67T   100   216.90    110    KEE-AF-KEECHELUS LAKE, WA     157.80    157.67T   100   139.40    113    RIM-AF-TIETON DAM & RIMROCK   198.00    197.57T   100   159.90    124    BUM-AF-BUMPING LAKE, WA        33.70     34.27T   102    25.40R   135                                                                                    Columbia Basin                                                                  GCL-AF-GRAND COULEE DAM & F  5185.45   4220.85V    81  2577.80    164    BNK-AF-BANKS LAKE NR GRAND    715.00    704.02V    98   502.32    140    POT-AF-O'SULLIVAN DAM & POT   332.20      ****    ***   228.77    ***                                                                                    Okanogan River Basin                                                            CCR-AF-CONCONULLY DAM & RES    13.00      ****    ***    10.15    ***    CCL-AF-SALMON LK DAM & CONC    10.50      ****    ***     9.57    ***                                                                                    Snake River Basin                                                               JCK-AF-JACKSON LAKE NEAR MO   847.00    798.53V    94   540.81    148    PAL-AF-PALISADES RESERVOIR   1200.00    551.08V    46   855.09     64    ISL-AF-ISLAND PARK RESERVOI   135.20    135.21V   100   134.01    101    GRS-AF-GRASSY LAKE NR MORAN    15.20     15.30V   101    13.63    112    RIR-AF-RIRIE RESERVOIR NEAR    80.50     66.95V    83    68.36E    98    AMF-AF-AMERICAN FALLS RES A  1672.60   1220.59V    73  1501.43     81    MIN-AF-MINIDOKA DAM & LAKE     95.20     89.24V    94    96.03     93    WOD-AF-LITTLE WOOD RESERVOI    30.00     23.31V    78    27.82     84                                                                                    Boise River Basin                                                               AND-AF-ANDERSON RANCH RES A   413.10    286.12V    69   364.64     78    ARK-AF-ARROWROCK RESERVOIR    272.20    152.38V    56   203.12     75    LUC-AF-LUCKY PEAK LAKE NEAR   264.40    255.18V    97   203.32    126    LOW-AF-LAKE LOWELL, ID        159.37    112.33V    70   141.12     80                                                                                    Payette River Basin                                                             CSC-AF-CASCADE RESERVOIR AT   646.46    641.21V    99   511.28    125    DED-AF-DEADWOOD RESERVOIR N   161.90    152.25V    94   137.72    111                                                                                    Weiser River Basin                                                              MAN-AF-MANN CR DAM & RES ON    11.10      9.56V    86    10.38E    92                                                                                    Clearwater River Basin                                                          RES-AF-LEWISTON ORCHARDS RE     3.00      2.02V    67     3.10E    65    SOL-AF-SOLDIERS MEADOW DAM,     2.37      1.96V    82     1.90E   103    WAH-AF-WAH                                                                                                     Owyhee River Basin                                                              OWY-AF-LAKE OWYHEE NEAR NYS   715.00    287.51V    40   598.47     48    WLD-AF-WILDHORSE RESERVOIR     71.50     28.08V    39    49.34     57                                                                                    Malheur River Basin                                                             BEU-AF-AGENCY VALLEY DAM &     59.90     29.09V    49    48.35     60    BUL-AF-BULLY CREEK RESERVOI    30.00     12.44V    41    22.61E    55    WAR-AF-WARM SPRINGS RESERVO   191.00     65.81V    34   141.29     47                                                                                    Powder River Basin                                                              PHL-AF-MASON DAM & PHILLIPS    73.50     38.62V    53    62.84E    61    THF-AF-THIEF VALLEY RESERVO    17.40     11.57V    67    16.97E    68                                                                                    Burnt River Basin                                                               UNY-AF-UNITY RESERVOIR NEAR    25.20     16.07V    64    22.77     71                                                                                    Umatilla River Basin                                                            MCK-AF-MCKAY RESERVOIR NR P    66.26      ****    ***    59.87    ***    CLS-AF-COLD SPRINGS DAM & R    38.33     18.06V    47    44.55     41                                                                                    Deschutes River Basin                                                           CRA-AF-CRANE PRAIRIE DAM &     55.30     43.85V    79    40.33    109    CRE-AF-CRESCENT LK DAM & LK    86.90     77.90V    90    59.28    131    WIC-AF-WICKIUP DAM & RES ON   200.00    152.86V    76   165.89     92    OCH-AF-OCHOCO DAM & RES ON     45.24     27.79V    61    38.34     72    PRV-AF-ARTHUR R BOWMAN DAM    152.80    137.13V    90   144.94     95    HAY-AF-HAYSTACK DAM & RES O     5.64      5.12V    91     4.57E   112    WAS-AF-WASCO DAM & CLEAR LA    11.90      8.20V    69     7.90    104                                                                                    Rogue River Basin                                                               AGA-AF-AGATE DAM AND RES ON     4.70      4.28V    91     4.49E    95    EMI-AF-EMIGRANT DAM & LK ON    39.00     35.75V    92    35.32    101    FIS-AF-FISH LK NR LAKE CR,      7.90      6.57V    83     6.47E   101    FOR-AF-FOURMILE LAKE, OR       15.60     10.29V    66    11.71E    88    HPD-AF-HOWARD PRAIRIE DAM &    60.60     50.05V    83    53.86E    93    HYA-AF-HYATT DAM & RES NR A    16.00     14.56V    91    14.25E   102                                                                                    Tualatin River Basin                                                            SCO-AF-SCOGGINS DAM AND HEN    53.60     51.69V    96    52.03E    99                                                                                                                  ------    ------    ---   ------    ---      TOTAL OF 49 RESERVOIRS    17968.76  14314.78     80 12690.71    113                                                                                    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.