Evaporation Stations

     Standard daily pan evaporation is measured using the four-foot diameter Class A evaporation pan. 
The pan water level reading is adjusted when precipitation is measure to obtain the actual evaporation.  
Most Class A pans are installed above ground, allowing effects such as radiation on the side walls and 
heat exchnges with the pan material.  These effects tend to increase the evaporation totals.  The amounts 
can then be adjusted by multiplying the totals b 0.70 or 0.80 to more closely estimate the evaporation
from naturally existing urfaces such as a shallow lake, wet soil or other moist natural surfaces.

    Many stations do not measure pan evaportation during winter months.  A "0.00" total indicates no measuement is taken.

    Stations marked with an asterisk (*) have estimated totals computed from meteorological measurements using a 
form of the Penman equation.

Click on a State: Arizona, California, Colorado, Hawaii & Pacific Islands, Idaho, Montana, Nevada, 
New Mexico, Oregon, Utah, Washington, 
Wyoming



                                                         ALASKA

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

BROOKS RIVER              | 1967-1990 |  0.00  0.00  0.00  0.00  0.00  2.48  2.88  1.63  0.73  0.00  0.00  0.00    7.72
CENTRAL 2                 | 1962-2005 |  0.00  0.00  0.00  0.00  0.00  3.97  4.00  2.43  2.19  0.00  0.00  0.00   12.59
COPPER CENTER             | 1961-1982 |  0.00  0.00  0.00  0.00  0.00  6.03  4.06  3.14  1.71  0.00  0.00  0.00   14.94
JUNEAU AP                 | 1949-2005 |  0.00  0.00  0.00  0.00  3.33  3.29  3.82  3.14  1.02  0.00  0.00  0.00   14.60
MATANUSKA AES             | 1917-2005 |  0.00  0.00  0.00  0.00  4.22  4.44  3.92  3.05  1.83  0.00  0.00  0.00   17.46
MC GRATH WB AIRPORT       | 1939-2005 |  0.00  0.00  0.00  0.00  4.20  4.42  3.65  2.29  1.40  0.00  0.00  0.00   15.96
MCKINLEY PARK             | 1949-2005 |  0.00  0.00  0.00  0.00  0.00  2.96  2.55  1.75  0.53  0.00  0.00  0.00    7.79
OIL WELL ROAD E P         | 1967-1974 |  0.00  0.00  0.00  0.00  0.00  5.17  3.83  2.81  1.40  0.00  0.00  0.00   13.21
OLD EDGERTON              | 1970-1996 |  0.00  0.00  0.00  0.00  3.31  4.56  4.16  3.04  1.65  0.00  0.00  0.00   16.72
PALMER AAES               | 1949-2005 |  0.00  0.00  0.00  0.00  4.44  4.71  4.12  2.96  1.75  0.00  0.00  0.00   17.98
RAMPART 2                 | 1963-1978 |  0.00  0.00  0.00  0.00  4.23  4.56  3.79  2.56  1.54  0.00  0.00  0.00   16.68
COLLEGE UNIV EXP STN      | 1931-2005 |  0.00  0.00  0.00  0.00  4.25  5.04  4.56  2.82  1.38  0.00  0.00  0.00   18.05


                                                         ARIZONA

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

BARTLETT DAM              | 1939-2005 |  3.92  4.92  7.10 10.02 13.77 16.21 15.56 13.95 12.10  9.66  5.86  4.47  117.54
BLACK RIVER PUMPS         | 1948-2005 |  0.00  0.00  0.00  6.93  8.83 10.12  7.99  7.02  5.70  3.94  0.00  0.00   50.53
DAVIS DAM # 2             | 1958-1977 |  7.49  7.46  9.75 12.78 16.71 19.48 19.87 17.91 14.64 12.03  8.40  7.80  154.32
DAVIS DAM                 | 1948-1961 |  3.54  5.13  7.60  9.30 11.33 13.33 13.14 12.15  9.51  7.24  5.38  3.88  101.53
DOUGLAS                   | 1948-2005 |  0.00  0.00  0.00 11.34 13.19 13.55 10.66 10.27  8.18  6.44  0.00  0.00   73.63
FORT VALLEY               | 1909-2005 |  0.00  0.00  0.00  0.00  5.86  7.37  6.03  4.91  3.35  0.00  0.00  0.00   27.52
GRAND CANYON NATL PARK    | 1957-1977 |  0.00  0.00  0.00  0.00  6.94 10.45  8.79  8.12  6.83  4.91  0.00  0.00   46.04
GRAND CANYON N P 2        | 1976-2005 |  0.00  0.00  0.00  0.00  7.46  9.80  8.94  7.29  6.10  4.45  0.00  0.00   44.04
HAWLEY LAKE               | 1967-1988 |  0.00  0.00  0.00  0.00  7.57  8.55  6.89  5.48  4.68  0.00  0.00  0.00   33.17
MANY FARMS SCHOOL         | 1951-1975 |  0.00  3.66  5.45  9.18 12.23 15.14 12.87 10.88  9.40  6.54  3.26  2.16   90.77
MC NARY 2 N               | 1933-2005 |  0.00  0.00  0.00  0.00  7.86  8.25  6.60  5.98  4.90  3.97  0.00  0.00   37.56
MESA                      | 1896-2005 |  3.03  4.02  6.11  8.64 11.33 12.67 13.10 11.87  9.69  6.81  4.15  2.96   94.38
NOGALES 6 N               | 1952-2005 |  3.59  4.46  7.01  9.35 11.91 13.31 10.00  8.28  8.06  7.17  4.49  3.57   91.20
PAGE                      | 1957-2005 |  0.00  2.60  5.84  8.27 10.72 12.86 13.06 11.38  8.42  5.13  2.29  0.00   80.57
ROOSEVELT 1 WNW           | 1905-2005 |  2.44  3.54  5.90  8.64 11.96 14.50 14.36 12.27 10.10  6.78  3.68  2.32   96.49
SACATON                   | 1908-2005 |  3.83  5.15  7.51 10.06 13.56 14.89 13.69 12.05 10.20  7.91  4.94  3.63  107.42
SAFFORD AGRICULTRL CTR    | 1948-2005 |  2.63  3.83  7.14 10.54 13.81 15.38 13.13 10.68  8.73  5.90  3.28  2.52   97.57
SAN CARLOS RESERVOIR      | 1948-2005 |  2.25  3.27  5.66  8.40 11.70 13.94 13.43 11.40  9.23  6.31  3.53  2.18   91.30
SIERRA ANCHA              | 1913-1979 |  2.19  2.93  4.58  6.42  8.97 10.94 10.39  8.88  8.00  6.22  3.50  2.37   75.39
SNOWFLAKE 15 W            | 1965-1998 |  0.00  0.00  0.00  0.00 11.03 14.38 11.29  9.12  7.96  6.45  3.40  0.00   63.63
STEWART MOUNTAIN          | 1948-2005 |  3.52  4.56  6.94 10.04 13.11 14.27 14.44 13.10 10.69  7.95  4.53  3.08  106.23
TEMPE A S U               | 1953-2005 |  1.56  2.93  4.79  7.04  9.44 10.85 10.99  9.92  7.63  5.14  2.56  1.44   74.29
TUCSON UNIV OF ARIZONA    | 1894-2005 |  3.25  4.57  6.95  9.88 12.87 14.91 13.17 11.65 10.35  7.81  4.73  3.37  103.51
TUCSON U OF ARIZ # 1      | 1982-2005 |  3.94  4.68  7.53 10.57 14.14 16.51 14.61 12.17 10.71  8.05  4.93  3.23  111.07
WAHWEAP                   | 1961-2005 |  1.95  2.77  6.30  9.42 12.82 14.94 15.26 13.31 10.06  7.06  3.69  2.60  100.18
WHITERIVER 1 SW           | 1900-2005 |  1.69  2.94  5.84  8.01  9.92 11.70  9.48  8.47  7.68  5.87  3.51  2.54   77.65
WINKELMAN 6 S             | 1942-1980 |  3.12  4.03  7.00  9.98 12.40 13.90 11.19  9.84  9.56  7.51  4.31  2.94   95.78
YUMA CITRUS STATION       | 1920-2005 |  3.58  4.36  6.81  9.17 11.75 13.19 13.85 12.28  9.51  6.91  4.43  3.37   99.21



                                                        CALIFORNIA

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ANTIOCH PUMP PLANT 3      | 1955-2005 |  1.17  1.99  4.25  6.27  8.96 10.84 11.60 10.06  7.77  4.91  2.07  1.22   71.11
AUBURN DAM PROJECT        | 1972-1984 |  1.42  1.89  3.13  4.89  7.73 10.08 11.66 10.70  8.08  5.00  1.97  1.36   67.91
AVENAL 9 SSE              | 1955-1961 |  1.80  2.90  6.20  9.39 12.96 16.73 18.67 16.37 12.61  8.05  3.89  2.44  112.01
BACKUS RANCH              | 1948-1963 |  2.85  3.86  6.77  9.80 12.69 15.93 16.92 15.95 12.19  8.01  4.25  2.98  112.20
BEAUMONT PUMPING PLANT    | 1948-1975 |  2.90  3.29  4.08  5.03  6.40  8.15 10.64  9.97  7.90  5.87  3.22  2.90   70.35
BEAUMONT 1 E              | 1948-2001 |  3.10  3.73  4.99  5.23  7.60  9.31 10.97 10.66  8.85  6.53  5.16  3.95   80.08
BERRYESSA LAKE            | 1957-1970 |  1.53  2.15  3.79  5.82  8.90 11.00 13.22 12.06  8.67  5.72  2.48  1.66   77.00
BOCA                      | 1948-2005 |  0.00  0.00  0.00  0.00  6.83  8.52 10.01  9.09  6.48  4.32  0.00  0.00   45.25
BRANNAN ISLAND            | 1968-1977 |  1.15  1.74  4.36  7.03 10.49 12.39 13.51 12.02  9.03  4.80  1.83  1.08   79.43
CACHUMA LAKE              | 1952-2005 |  2.44  3.53  4.41  6.01  7.55  8.56  9.50  8.98  7.00  5.42  3.49  2.79   69.68
CAMP PARDEE               | 1948-2005 |  0.72  1.12  2.32  4.18  7.04  9.43 11.17  9.50  6.51  3.77  1.40  0.72   57.88
CHICO EXPERIMENT STN      | 1906-2005 |  1.26  2.13  3.82  5.63  8.28 10.11 11.48  9.71  7.36  4.46  2.09  1.30   67.63
CHULA VISTA               | 1948-2005 |  2.81  3.45  5.03  6.06  6.76  6.96  7.63  7.48  6.21  5.02  3.58  2.78   63.77
COW CREEK                 | 1948-1961 |  3.21  5.62  9.78 13.98 17.25 21.37 21.89 20.17 15.36 10.71  4.91  3.85  148.10
DAVIS 1 WSW               | 1917-2005 |  1.49  2.34  4.54  7.13 10.19 12.17 12.77 11.28  9.08  6.35  2.89  1.45   81.68
DEATH VALLEY              | 1961-2005 |  3.93  5.38  9.10 13.00 16.76 19.11 20.98 18.86 13.95  9.78  5.54  3.75  140.14
DUTTONS LANDING           | 1955-1977 |  1.42  2.09  3.87  5.70  7.74  9.34  9.34  8.27  6.75  4.65  2.25  1.46   62.88
FALL RIVER MILLS INTAKE   | 1948-2005 |  0.00  0.00  2.47  5.80  7.54  9.48 12.14 10.57  7.59  3.78  1.14  0.00   60.51
FERNDALE 2 NW             | 1963-1973 |  0.70  1.17  2.26  3.21  3.95  4.38  4.49  4.07  3.59  2.06  1.04  0.72   31.64
FOLSOM DAM                | 1955-1993 |  0.92  1.90  3.47  5.21  8.07  9.91 11.12  9.93  7.45  4.89  2.06  1.25   66.18
FRIANT GOVERNMENT CAMP    | 1948-2005 |  1.46  2.12  3.82  5.89  9.42 12.07 13.96 12.47  9.00  5.76  2.61  1.37   79.95
GRIZZLY ISLAND REFUGE     | 1971-1977 |  1.45  2.25  4.00  5.72  8.07  9.82 10.69  8.93  6.88  4.33  2.10  1.55   65.79
HETCH HETCHY              | 1931-2005 |  0.00  0.00  0.00  3.84  5.31  7.34  8.78  7.86  5.85  3.23  1.74  0.00   43.95
INDIO FIRE STATION        | 1927-2005 |  2.85  4.38  7.15  9.98 12.73 14.85 14.95 13.59 10.80  7.60  3.98  2.49  105.35
KETTLEMAN CITY 1 SSW      | 1955-2005 |  1.73  2.99  5.80  8.32 11.75 14.27 16.11 14.74 10.82  7.30  3.46  1.74   99.03
KNIGHTS FERRY 2 ESE       | 1959-1977 |  1.00  1.69  3.14  5.65  8.54 10.14 11.60 10.31  7.74  4.62  2.69  1.00   68.12
LAKE PILLSBURY 2          | 1964-1970 |  0.58  1.42  3.01  4.62  7.41  8.38 10.31  9.35  6.93  3.61  1.19  0.87   57.68
LAKESHORE 2               | 1948-1972 |  1.09  1.68  2.97  4.78  6.15  7.43  9.71  8.79  6.44  3.40  1.41  0.95   54.80
LAKE SOLANO               | 1975-2005 |  1.48  2.37  4.28  6.66  9.24 11.24 11.53  9.86  7.58  5.26  2.59  1.67   73.76
LAKE SPAULDING            | 1914-2003 |  0.00  0.00  0.00  0.00  4.57  6.52  8.16  6.78  4.54  1.98  0.00  0.00   32.55
LAKE SPAULDING DAM        | 1955-1971 |  0.00  0.00  0.00  0.00  7.20  9.98 12.38 11.85  8.94  6.64  0.00  0.00   56.99
LITTLE PANOCHE DET DAM    | 1968-1975 |  1.77  2.89  5.87  9.39 14.56 16.31 18.45 16.63 12.46  7.60  3.04  1.78  110.75
LODI                      | 1948-2005 |  1.19  1.95  3.82  6.01  8.60  9.92 10.63  9.11  6.68  4.08  1.86  1.07   64.92
LOS BANOS DET RESV        | 1968-2005 |  1.57  2.71  5.44  9.34 14.18 16.58 17.85 15.63 11.87  7.49  3.34  1.82  107.82
MANDEVILLE ISLAND         | 1955-1965 |  1.10  2.38  4.77  6.95  8.55 10.44 11.22  9.71  7.41  5.12  2.47  1.13   71.25
MANTECA                   | 1965-1977 |  1.20  1.71  4.04  6.33  9.24 10.53 11.64 10.22  7.19  4.13  1.78  1.16   69.17
MARKLEY COVE              | 1970-2005 |  1.03  1.51  3.03  4.80  7.33  9.60 10.82  9.45  6.99  4.35  1.75  1.01   61.67
MOJAVE                    | 1948-2005 |  0.00  4.65  6.45  9.97 13.59 15.33 17.21 16.00 11.83  8.28  4.76  3.52  111.59
MONTICELLO DAM            | 1957-1970 |  1.02  1.83  3.24  4.96  7.35  9.36 11.20 10.07  7.56  4.82  1.98  1.08   64.47
NACIMIENTO DAM            | 1957-1978 |  1.58  2.20  3.92  5.53  7.92  9.85 11.28 10.43  7.76  5.16  2.57  1.66   69.86
NEWARK                    | 1948-2005 |  1.71  2.15  4.16  5.76  7.77  8.64  9.04  8.00  6.64  4.52  2.36  1.55   62.30
NEW MELONES DAM           | 1979-1992 |  1.34  2.25  3.56  5.93  9.16 11.85 13.73 12.29  8.86  5.75  2.37  1.28   78.37
NEW MELONES DAM HQ        | 1992-2005 |  1.30  1.83  3.46  5.25  7.94 10.23 12.23 11.72  8.71  5.52  2.23  1.19   71.61
OAKDALE WOODWARD DAM      | 1948-1967 |  1.03  1.72  3.42  5.47  8.95 11.88 14.23 12.22  8.53  5.52  2.10  1.02   76.09
PLACERVILLE IFG           | 1955-1991 |  1.53  1.67  2.72  3.98  5.84  7.79  9.41  8.45  6.62  3.93  1.87  1.51   55.32
RIVERSIDE CITRUS EXP ST   | 1948-2005 |  3.32  3.59  4.86  6.28  7.33  8.59 10.88 10.28  7.84  5.85  3.81  3.03   75.66
SALT SPRINGS PWR HOUSE    | 1948-1998 |  1.84  2.47  3.27  4.86  6.49  7.92 10.30  9.95  7.89  5.18  2.68  2.26   65.11
SAN LUIS DAM              | 1963-2005 |  1.41  2.49  5.31  8.67 13.14 15.75 18.38 16.68 12.01  7.42  3.02  1.56  105.84
SHASTA DAM                | 1948-2005 |  1.50  2.08  3.17  5.05  7.28  9.18 11.36 10.36  7.55  4.85  2.29  1.63   66.30
STOCKTON MOWRY BRIDGE     | 1955-1965 |  0.72  1.58  3.87  5.97  8.47 10.95 10.82  9.56  6.60  3.93  1.70  0.74   64.91
TAHOE                     | 1914-2005 |  0.00  0.00  0.00  0.00  4.27  5.23  5.98  5.35  3.16  1.57  0.00  0.00   25.56
TRACY PUMPING PLANT       | 1955-2005 |  1.53  2.47  5.30  8.20 12.01 14.88 16.92 14.55 10.64  6.57  2.93  1.48   97.48
TRINITY DAM VISTA POINT   | 1959-1973 |  0.00  0.00  2.83  3.98  6.56  8.32 10.67  9.15  5.97  2.74  0.57  0.85   51.64
TRINITY RIVER HATCHERY    | 1974-2005 |  0.58  1.00  2.77  4.43  6.78  8.32  9.71  8.91  6.15  3.20  0.99  0.51   53.35
TULELAKE                  | 1932-2005 |  0.00  0.00  0.00  4.56  7.55  8.39  9.52  8.53  6.80  3.49  0.00  0.00   48.84
TURNTABLE CREEK           | 1948-1969 |  1.98  2.60  3.76  5.25  6.32  8.29 10.23  9.90  8.35  5.71  3.08  2.37   67.84
TWITCHELL DAM             | 1962-2005 |  3.08  3.33  4.47  5.89  7.36  8.15  9.22  8.69  7.42  5.92  4.07  3.14   70.74
WALNUT GROVE              | 1953-1961 |  1.53  2.90  4.74  5.73  7.76 10.04 10.22  8.81  6.40  3.60  2.10  1.32   65.15
WARM SPRINGS DAM          | 1973-1998 |  1.17  1.83  3.23  5.37  7.83  9.33 10.04  8.49  6.58  4.59  2.10  1.17   61.73
WHISKEYTOWN RESERVOIR     | 1960-2005 |  0.87  1.23  2.51  4.05  6.41  8.05 10.04  8.80  6.25  3.40  1.14  0.78   53.53
WILLOW CREEK 1 NW         | 1968-2005 |  0.58  1.35  1.81  2.74  4.73  6.50  7.53  6.05  3.79  1.94  0.75  0.92   38.69


                                                         COLORADO

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

AKRON 4 E                 | 1918-2005 |  0.00  0.00  0.00  7.30  9.29 11.43 13.26 11.16  9.09  6.16  0.00  0.00   67.69
ALAMOSA WSO AP            | 1948-2005 |  0.00  0.00  0.00  7.06  9.01 10.08  9.16  7.81  6.40  4.39  0.00  0.00   53.91
ARBOLES                   | 1957-1963 |  0.00  0.00  0.00  5.41  7.95  9.56  9.78  8.61  6.52  0.00  0.00  0.00   47.83
BONNY LAKE                | 1949-2005 |  0.00  0.00  0.00  7.26  8.69 10.86 11.78 10.61  8.12  6.12  4.57  0.00   68.01
CLIMAX                    | 1949-2005 |  0.00  0.00  0.00  0.00  0.00  5.36  5.32  4.44  3.41  0.00  0.00  0.00   18.53
CONEJOS 3 NNW             | 1948-1960 |  0.00  0.00  0.00  6.30  7.14  7.67  7.41  6.87  7.19  5.74  0.00  0.00   48.32
ESTES PARK                | 1948-1994 |  0.00  0.00  0.00  5.78  5.26  7.09  7.13  6.15  5.04  4.04  0.00  0.00   40.49
FORT COLLINS              | 1900-2005 |  0.00  0.00  2.50  4.52  5.42  6.32  6.92  6.07  4.74  3.07  1.48  0.00   41.04
GRAND JUNCTION WALKER     | 1900-2005 |  0.00  0.00  4.67  8.53 12.18 15.96 16.53 14.02 10.98  7.05  2.42  0.00   92.34
GRAND JUNCTION 6 ESE      | 1962-2005 |  0.00  0.00  0.00  6.60  9.29 11.77 12.01 10.24  7.48  4.65  2.09  0.00   64.13
GRAND LAKE 6 SSW          | 1948-2005 |  0.00  0.00  0.00  0.00  4.82  7.75  7.81  6.79  5.24  3.10  0.00  0.00   35.51
GREEN MOUNTAIN DAM        | 1948-2005 |  0.00  0.00  0.00  0.00  4.96  6.56  6.93  5.90  4.65  2.90  0.00  0.00   31.90
JOHN MARTIN DAM           | 1941-2005 |  0.00  0.00  6.40  8.04  9.67 11.30 12.31 10.28  7.82  5.61  2.78  0.00   74.21
LAKE GEORGE 8 SW          | 1948-2005 |  0.00  0.00  0.00  0.00  5.15  8.26  7.39  6.02  5.72  0.00  0.00  0.00   32.54
MEREDITH                  | 1963-2005 |  0.00  0.00  0.00  0.00  7.69  8.26  8.34  6.96  5.25  3.21  0.00  0.00   39.71
MONTROSE 1                | 1948-1982 |  1.68  1.49  3.34  5.69  7.49  9.47  9.04  7.39  5.54  3.45  1.61  1.26   57.45
PLATORO                   | 1949-1991 |  0.00  0.00  0.00  0.00  5.86  8.10  6.57  5.24  5.52  3.33  0.00  0.00   34.62
PUEBLO WSO AP             | 1954-2005 |  0.00  0.00  0.00  8.71  9.50 11.51 12.14 10.41  8.17  6.14  0.00  0.00   66.58
PUEBLO CITY RESERVOIR     | 1948-1971 |  0.00  5.13  5.86  6.85  8.81 10.09 10.60  8.85  7.43  5.30  2.99  2.71   74.62
PUEBLO RESERVOIR          | 1975-2005 |  0.00  0.00  0.00  7.18  9.34 10.87 11.58  9.92  7.90  5.88  0.00  0.00   62.67
PUEBLO 6 SSW              | 1971-1985 |  0.00  0.00  4.82  7.47  8.57 10.65 11.30  9.40  7.13  5.53  0.00  0.00   64.87
SAN LUIS LAKES 3W         | 1948-1955 |  0.00  0.00  4.50  6.07  8.51  9.88  8.49  7.77  6.57  4.53  0.00  0.00   56.32
SPRINGFIELD 7 WSW         | 1956-2002 |  0.00  0.00  0.00  7.85  9.73 11.44 12.69 11.28  8.53  6.29  4.57  0.00   72.38
SUGARLOAF RESERVOIR       | 1948-2005 |  0.00  0.00  0.00  0.00  0.00  7.03  6.15  4.97  4.15  2.93  0.00  0.00   25.23
TRINIDAD LAKE             | 1989-2005 |  0.00  0.00  0.00  6.75  9.04 10.55  9.88  8.27  7.65  6.17  3.92  2.21   64.44
TWIN LAKES RESERVOIR      | 1949-2005 |  0.00  0.00  0.00  0.00  6.93  8.65  7.92  6.79  5.33  3.96  0.00  0.00   39.58
VALLECITO DAM             | 1948-2005 |  0.00  0.00  1.91  3.82  5.29  6.22  6.09  5.31  4.39  3.04  1.60  0.00   37.67
WAGON WHEEL GAP 3 N       | 1948-1972 |  0.00  0.00  0.00  0.00  6.69  7.90  7.15  5.81  5.30  2.61  0.00  0.00   35.46
WALSH 1 W                 | 1951-2005 |  0.00  0.00  0.00  0.00 10.78 12.35 12.76 11.63  9.42  6.88  0.00  0.00   63.82
WIGGINS 7 SW              | 1960-1971 |  0.00  0.00  0.00  6.82  8.50  8.42  9.97  8.09  5.87  4.22  2.23  0.00   54.12



                                                         HAWAII

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

HILO WSO AP 87            | 1949-2005 |  5.06  4.87  5.15  5.40  5.66  6.49  6.44  6.13  5.40  5.37  4.06  4.46   64.49
HONOLULU OBSRVY 702.2     | 1962-2005 |  4.72  5.23  7.01  7.84  8.93  9.41 10.10 10.09  8.82  7.68  5.94  5.08   90.85
LIHUE WSO AP 1020.1       | 1950-2005 |  5.62  6.22  7.62  8.22  9.21  9.85 10.40 10.21  9.18  8.04  6.27  5.67   96.51
U S MAGNETIC OBSERVATOR   | 1949-1960 |  4.16  4.58  5.90  7.09  7.87  8.16  8.15  8.21  7.24  6.17  4.41  4.83   76.77


                                                         PACIFIC ISLANDS

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

GUAM NAS                  | 1945-2005 |  6.98  0.00  0.00  7.96  7.20  6.58  6.22  5.53  4.68  4.70  0.00  0.00   49.85
GUAM WSMO                 | 1957-1998 |  5.84  6.07  7.38  7.82  7.73  6.92  6.02  5.28  5.15  5.36  5.42  5.74   74.73
JOHNSTON ISLAND WSO AIR   | 1953-2004 |  8.69  8.76 10.29 10.25 10.79 11.42 11.50 10.82  9.81  9.53  8.19  8.75  118.80
MARCUS ISLAND WB          | 1953-1968 |  6.91  8.06  8.66  8.70  8.71  9.49  8.89  9.40  8.22  7.46  6.91  6.81   98.22
PAGO PAGO WSO AIRPORT     | 1966-2005 |  7.96  6.17  6.84  5.95  5.94  6.66  6.69  6.62  7.36  8.08  7.13  9.12   84.52
WAKE ISLAND WSO AP        | 1953-2004 |  0.00  0.00  0.00  7.57  0.00  5.89  0.00  0.00  0.00  0.00  0.00  0.00   13.46
YAP ISLAND WSO AIRPORT    | 1953-2005 |  6.31  6.20  7.37  7.40  6.97  5.51  5.61  5.68  5.61  5.85  5.50  5.93   73.94


                                                         IDAHO

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ABERDEEN EXPERIMNT STN    | 1914-2005 |  0.00  0.00  0.00  0.00  7.46  8.95 10.28  9.40  6.41  3.85  0.00  0.00   46.35
ARROWROCK DAM             | 1916-2005 |  0.00  0.00  0.00  0.00  5.94  7.53 10.18  8.93  5.75  2.35  0.00  0.00   40.68
BLACKFOOT DAM             | 1948-1971 |  0.00  0.00  0.00  0.00  0.00  7.56  9.19  7.42  3.97  0.00  0.00  0.00   28.14
EMMETT 2 E                | 1948-2005 |  0.00  0.00  0.00  5.62  7.09  8.82 10.58  9.44  6.56  4.57  0.00  0.00   52.68
ISLAND PARK               | 1937-2005 |  0.00  0.00  0.00  0.00  0.00  4.90  6.58  5.69  0.00  0.00  0.00  0.00   17.17
LIFTON PUMPING STN        | 1935-2005 |  0.00  0.00  0.00  4.08  5.97  7.41  8.70  7.80  5.35  3.02  0.00  0.00   42.33
MACKAY 4 NW               | 1965-1988 |  0.00  0.00  0.00  0.00  6.81  8.39 10.23  8.73  6.39  0.00  0.00  0.00   40.55
MINIDOKA DAM              | 1947-2005 |  0.00  0.00  0.00  6.79  8.17 10.76 13.01 11.48  8.26  4.63  2.94  0.00   66.04
MOSCOW UNIV OF IDAHO      | 1893-2005 |  0.00  0.00  3.03  3.85  5.66  6.53  8.62  8.23  5.29  3.03  2.85  0.00   47.09
PALISADES                 | 1947-1993 |  0.00  0.00  0.00  4.01  5.56  7.04  9.38  8.32  5.48  3.58  0.00  0.00   43.37
PARMA EXPERIMENT STN      | 1922-2005 |  0.00  0.00  0.00  6.00  8.26  9.05 10.41  9.47  6.30  0.00  0.00  0.00   49.49
REXBURG RICKS COLLEGE     | 1977-2005 |  0.00  0.00  0.00  0.00  6.59  7.29  8.06  7.36  5.23  0.00  0.00  0.00   34.53
SANDPOINT EXPERMNT STN    | 1910-2005 |  0.00  0.00  0.00  0.00  4.96  5.51  7.47  6.78  4.47  0.00  0.00  0.00   29.19
TWIN FALLS WSO            | 1963-2005 |  0.00  0.00  0.00  5.80  8.09  9.15 10.24  9.09  6.65  4.25  0.77  0.00   54.04


                                                         MONTANA

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

BABB 6 NE                 | 1948-2005 |  0.00  0.00  0.00  0.00  5.23  5.91  6.87  5.90  4.06  0.00  0.00  0.00   27.97
BOZEMAN MONTANA ST UNIV   | 1892-2005 |  0.00  0.00  0.00  3.34  5.58  6.03  8.34  7.17  4.57  2.62  0.00  0.00   37.65
BOZEMAN 6 W EXP FARM      | 1966-2005 |  0.00  0.00  0.00  4.24  5.68  6.62  8.19  7.73  4.88  2.99  0.00  0.00   40.33
CANYON FERRY DAM          | 1948-1957 |  0.00  0.00  0.00  0.00  7.98  7.13  8.17  7.41  5.50  3.11  0.00  0.00   39.30
CANYON FERRY DAM          | 1907-1996 |  0.00  0.00  0.00  3.15  5.04  6.21  7.91  7.04  4.18  1.93  0.00  0.00   35.46
DILLON WMCE               | 1895-2005 |  0.00  0.00  0.00  3.05  4.72  5.32  6.41  5.45  3.48  2.84  0.00  0.00   31.27
FORT ASSINNIBOINE         | 1917-2005 |  0.00  0.00  0.00  4.54  6.43  7.30  8.86  8.12  5.00  0.00  0.00  0.00   40.25
FORT PECK                 | 1948-1956 |  0.00  0.00  0.00  0.00  5.99  8.17  9.51  8.04  5.36  4.25  0.00  0.00   41.32
FORT PECK POWER PLANT     | 1956-2005 |  0.00  0.00  0.00  0.00  7.34  8.45 10.42  9.81  5.83  3.53  0.00  0.00   45.38
HUNGRY HORSE DAM          | 1948-2005 |  0.00  0.00  0.00  0.00  4.83  5.62  7.81  6.63  3.46  1.37  0.00  0.00   29.72
HUNTLEY EXPERIMENT STN    | 1911-2005 |  0.00  0.00  0.00  5.03  6.71  7.40  8.88  8.15  5.10  0.00  0.00  0.00   41.27
LONESOME LAKE             | 1948-1981 |  0.00  0.00  0.00  0.00  7.42  7.60  9.25  8.31  5.70  0.00  0.00  0.00   38.28
MALTA 7 E                 | 1972-2005 |  0.00  0.00  0.00  4.67  6.50  6.51  7.61  6.84  4.17  1.34  0.00  0.00   37.64
MEDICINE LAKE 3 SE        | 1911-2005 |  0.00  0.00  0.00  0.00  7.44  7.69  9.62  9.19  5.36  0.00  0.00  0.00   39.30
MOCCASIN EXPERIMENT STN   | 1909-2005 |  0.00  0.00  0.00  4.35  6.59  7.72  9.66  9.21  6.39  0.00  0.00  0.00   43.92
SIDNEY                    | 1910-2005 |  0.00  0.00  0.00  3.99  5.63  6.44  6.93  5.45  2.89  1.81  0.00  0.00   33.14
TIBER DAM                 | 1952-2005 |  0.00  0.00  0.00  0.00  4.51  6.46  7.65  5.56  4.34  0.00  0.00  0.00   28.52
VALIER                    | 1911-2005 |  0.00  0.00  0.00  0.00  5.37  6.49  7.33  5.62  4.72  0.00  0.00  0.00   29.53
WESTERN AG RESEARCH CNT   | 1965-2005 |  0.00  0.00  0.00  0.00  5.08  6.03  7.26  6.07  4.14  2.25  0.00  0.00   30.83
YELLOWTAIL DAM            | 1948-2005 |  0.00  0.00  0.00  0.00  6.94  8.84 10.60  9.74  6.58  4.86  0.00  0.00   47.56


                                                         NEVADA

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

BEOWAWE U OF N RANCH      | 1972-2005 |  0.00  0.00  0.00  3.98  7.17  8.68 10.42  9.52  6.97  4.43  0.00  0.00   51.17
BOULDER CITY              | 1931-2004 |  3.71  4.68  7.56 10.67 13.79 16.57 16.45 14.41 11.51  8.11  4.87  3.69  116.02
CALIENTE                  | 1928-2005 |  0.00  0.00  3.97  6.82  8.57 10.58 11.13  9.41  6.89  4.35  1.91  0.00   63.63
CENTRAL NEVADA FIELD LA   | 1965-1986 |  0.00  0.00  2.98  5.95  8.69 10.49 12.24 11.31  8.08  4.88  1.73  0.00   66.35
FALLON EXPERIMENT STN     | 1950-1992 |  1.34  2.23  4.39  6.15  7.70  8.91  9.87  8.63  6.10  3.90  1.91  1.37   62.50
LAHONTAN                  | 1948-2005 |  0.00  0.00  0.00  7.18  9.64 11.58 13.75 12.23  7.83  4.51  2.09  0.00   68.81
LOGANDALE                 | 1968-1992 |  2.55  3.61  5.26  8.96 12.44 14.20 14.38 12.07  8.67  7.66  3.86  2.89   96.55
RUBY LAKE                 | 1948-2005 |  0.00  0.00  0.00  5.10  7.09  8.90 10.54  9.37  6.51  3.95  0.00  0.00   51.46
RYE PATCH DAM             | 1948-2005 |  0.00  0.00  3.71  5.83  7.38  9.23 11.15 10.06  6.95  4.30  0.77  0.00   59.38
SILVERPEAK                | 1967-2005 |  0.00  3.84  7.26 10.13 13.60 16.31 17.98 15.92 11.32  6.88  2.94  0.00  106.18
TOPAZ LAKE                | 1957-2005 |  0.00  0.00  0.00  7.15  9.11 10.94 12.68 11.56  8.80  5.95  2.79  0.00   68.98


                                                         NEW MEXICO

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ABIQUIU DAM               | 1957-2005 |  0.00  0.00  6.06  7.43  9.95 11.39 10.52  8.90  7.23  5.30  3.13  2.22   72.13
AGRICULTURAL COLLEGE      | 1892-1959 |  3.01  4.00  7.89 10.20  8.65 13.99 12.33 11.16  8.31  6.28  4.35  2.89   93.06
ALAMOGORDO DAM            | 1939-1975 |  3.73  4.35  8.21 11.30 12.88 14.43 13.66 11.59  9.17  7.19  4.89  3.46  104.86
ANIMAS                    | 1923-2005 |  3.87  4.91  8.29 10.78 12.36 14.25 11.60 11.07  8.54  6.71  4.69  3.61  100.68
ARTESIA 6 S               | 1914-2005 |  4.38  3.03  7.25  7.66 12.11 13.13 10.86 10.44  9.36  6.34  3.12  0.00   87.68
BITTER LAKES WL REFUGE    | 1950-2005 |  2.67  3.93  6.82  9.60 11.31 12.62 11.88 10.16  8.02  5.85  3.53  2.50   88.89
BOSQUE DEL APACHE         | 1914-2005 |  3.21  4.20  7.76 10.20 11.61 13.13 11.56 10.36  8.03  6.25  3.66  2.54   92.51
BRANTLEY DAM              | 1987-2005 |  4.65  0.00  8.62 11.77 14.61 15.46 14.19 12.22  9.88  7.97  5.77  4.34  109.48
CABALLO DAM               | 1938-2005 |  4.42  5.10  8.56 11.37 13.59 14.80 13.08 11.35  9.26  7.27  4.78  3.48  107.06
CAPULIN NATL MONUMENT     | 1966-1979 |  0.00  0.00  0.00  0.00  9.08 10.57  9.71  9.18  7.65  0.00  0.00  0.00   46.19
CLOVIS 13 N               | 1929-2005 |  3.83  4.12  6.63  8.72 10.15 11.45 11.65  9.55  7.64  5.78  3.95  3.21   86.68
COCHITI DAM               | 1975-2005 |  0.00  4.14  6.44  8.48 11.07 12.95 12.38 10.62  8.91  6.29  3.94  2.79   88.01
CONCHAS DAM               | 1938-2005 |  0.00  0.00  7.35  8.88 10.29 11.69 11.37 10.06  8.24  6.18  4.04  2.79   80.89
EAGLE NEST                | 1937-2005 |  0.00  0.00  0.00  4.91  7.67  7.83  7.07  5.87  5.30  4.31  0.00  0.00   42.96
EL VADO DAM               | 1923-2005 |  0.00  0.00  3.61  5.43  7.46  8.84  8.52  6.91  5.66  3.84  1.72  0.00   51.99
ELEPHANT BUTTE DAM        | 1917-2005 |  3.47  4.87  8.61 12.22 14.94 16.37 14.15 12.05  9.78  7.70  4.91  3.34  112.41
ESTANCIA                  | 1914-2005 |  0.00  0.00  3.26  6.79  8.56  9.27  8.61  7.10  5.60  3.82  2.62  0.00   55.63
FARMINGTON AG SCIENCE C   | 1978-2005 |  0.00  0.00  0.00  7.97 10.06 12.00 12.52 10.70  8.15  5.41  0.00  0.00   66.81
FLORIDA                   | 1939-1992 |  3.54  4.81  8.10 10.94 13.03 14.80 11.84 10.10  8.51  6.58  4.57  3.11   99.93
GALLUP RANGER STN         | 1966-1975 |  0.00  0.00  0.00  6.61  9.31 12.12 10.50  8.70  7.95  5.07  2.20  0.00   62.46
JEMEZ DAM                 | 1953-2005 |  0.00  0.00  0.00  9.91 12.27 13.95 14.29 11.45  9.80  6.72  3.65  0.00   82.04
JORNADA EXP RANGE         | 1925-2005 |  2.50  4.18  7.24 10.06 11.94 12.85 10.88  9.53  7.82  5.71  3.61  2.50   88.82
LAGUNA                    | 1914-2005 |  0.00  0.00  0.00  8.47  9.33 11.98 10.76  8.88  6.83  5.00  1.98  0.00   63.23
LAKE AVALON               | 1914-1979 |  4.49  5.33  9.42 12.36 14.31 15.16 14.14 12.33  9.25  7.26  4.68  4.20  112.93
LAKE MC MILLAN            | 1941-1949 |  0.00  0.00  0.00 13.78  8.14 14.26 13.38 13.45 10.35  6.15  0.00  0.00   79.51
LOS LUNAS 3 SSW           | 1923-2005 |  1.87  2.81  5.27  7.77  9.74 10.49 10.06  8.67  6.58  4.64  2.75  2.45   73.10
NARROWS                   | 1948-1964 |  3.09  5.67  7.62 11.07 13.37 15.44 13.07 11.42  9.97  7.20  4.32  2.64  104.88
NAVAJO DAM                | 1963-2005 |  0.00  0.00  0.00  6.58  9.10 11.07 11.24  9.66  7.22  4.74  0.00  0.00   59.61
PORTALES 7 WNW            | 1934-1960 |  3.26  4.57  8.24  8.85 10.72 12.16 10.44  9.28  7.95  5.98  4.15  3.53   89.13
HOOD RANGER STN           | 1954-2005 |  0.00  0.00  0.00  7.84  9.02 10.81  8.25  6.87  6.12  5.14  2.65  0.00   56.70
ROSWELL WSO AIRPORT       | 1893-1972 |  0.00  0.00  0.00 11.29  0.00 15.87 12.11 12.63  7.92  6.97  4.66  4.51   75.96
SANTA FE                  | 1867-1972 |  0.00  0.00  3.00  7.28  8.73 10.93  9.95  8.26  7.15  5.10  2.50  0.00   62.90
SANTA FE 2                | 1972-2005 |  0.00  0.00  0.00  7.10  9.76 11.31 10.36  9.20  7.41  5.08  0.00  0.00   60.22
SHIPROCK                  | 1926-2005 |  0.00  0.00  0.00  7.84 10.57 14.44 13.17 10.80  9.80  6.54  0.00  0.00   73.16
SOCORRO                   | 1914-2005 |  0.00  0.00  4.83  7.09  9.17  9.35  8.56  7.57  5.73  4.14  0.00  0.00   56.44
STATE UNIVERSITY          | 1959-2005 |  3.00  4.33  7.40  9.90 12.03 12.91 12.05 10.34  8.14  6.17  3.85  2.79   92.91
SUMNER LAKE               | 1921-2005 |  0.00  0.00  7.33 10.22 12.35 13.54 13.36 11.16  9.02  6.97  4.92  3.17   92.04
TUCUMCARI 4 NE            | 1904-2005 |  0.00  0.00  0.00  9.83 11.53 13.11 13.00 11.13  8.96  6.74  0.00  0.00   74.30
UTE DAM                   | 1965-2005 |  4.38  4.91  7.53  8.78 10.75 10.49 10.92  9.42  7.56  6.68  4.98  3.04   89.44


                                                         OREGON

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ASTOR EXPERIMENT STN      | 1948-1973 |  0.56  0.96  1.47  2.21  3.75  3.95  4.65  4.10  2.95  1.65  0.87  0.70   27.82
BEND 7 NE                 | 1991-2005 |  0.00  0.00  0.00  4.25  6.14  6.69  8.66  7.91  5.42  0.00  0.00  0.00   39.07
CORVALLIS STATE UNIV      | 1889-2005 |  0.00  0.00  1.79  2.96  4.59  5.86  7.70  7.07  5.06  2.33  0.96  0.00   38.32
COTTAGE GROVE DAM         | 1943-2005 |  0.00  1.27  2.16  3.07  4.56  5.60  7.75  6.70  4.47  2.06  0.82  0.00   38.46
DETROIT DAM               | 1954-2005 |  0.19  1.16  1.69  2.51  4.38  5.90  7.68  6.64  4.24  2.05  0.88  0.46   37.78
DORENA DAM                | 1948-2005 |  0.00  1.01  1.94  2.95  4.98  6.11  8.19  7.15  4.66  2.01  0.00  0.00   39.00
FERN RIDGE DAM            | 1943-2005 |  0.39  0.79  1.92  3.17  5.03  6.21  8.12  7.09  4.76  2.21  0.67  0.34   40.70
HERMISTON 2 S             | 1928-1997 |  0.00  0.00  3.44  5.43  7.91  9.67 11.32  9.66  6.32  3.97  0.00  0.00   57.72
HOOD RIVER EXP STN        | 1928-2005 |  0.00  0.00  0.00  0.00  6.45  6.80  8.81  7.04  3.32  3.09  0.00  0.00   35.51
KLAMATH FALLS AGR STN     | 1949-2004 |  0.70  1.31  2.81  4.73  7.21  8.79 10.24  9.41  6.30  4.37  0.00  0.67   56.54
LOOKOUT POINT DAM         | 1955-2005 |  0.00  1.76  2.29  3.10  4.67  5.77  7.69  6.89  4.45  1.96  1.01  0.00   39.59
MADRAS 1 NNW              | 1952-2005 |  0.00  0.00  0.00  4.72  7.12  8.66 10.23  9.17  6.21  3.16  1.70  0.00   50.97
MALHEUR BRANCH EXP STN    | 1943-2005 |  0.00  0.00  0.00  5.68  7.71  8.94 11.06  9.57  6.17  3.14  0.72  0.00   52.99
VOLTAGE 2 NW              | 1959-2005 |  0.00  0.00  0.00  4.37  6.22  7.67  9.58  8.52  5.86  3.19  0.00  0.00   45.41
MEDFORD EXP STN           | 1937-2003 |  0.53  1.02  2.26  3.56  5.29  6.54  8.24  6.78  4.05  1.81  0.76  0.44   41.28
MORO                      | 1928-2005 |  0.00  0.00  2.96  5.11  7.74  9.60 12.34 11.18  7.15  3.56  0.00  0.00   59.64
N WILLAMETTE EXP STN      | 1963-2005 |  0.63  1.18  2.29  3.31  5.15  6.01  7.40  6.78  4.68  2.39  1.05  0.57   41.44
ODELL LAKE LAND PAN       | 1948-1980 |  0.00  0.00  0.00  0.00  3.17  4.13  5.54  3.81  1.90  0.67  0.00  0.00   19.22
ODELL LAKE WATER PAN      | 1945-1959 |  0.00  0.00  0.00  0.00  1.87  2.71  3.97  4.01  3.44  2.02  0.00  0.00   18.02
PELTON DAM                | 1958-2005 |  0.00  0.00  0.00  4.48  6.77  8.26  9.98  8.12  5.22  2.49  0.00  0.00   45.32
PENDLETON BR EXP STN      | 1956-2005 |  0.00  0.00  3.41  5.09  6.93  8.81 11.78 10.85  7.02  3.80  0.00  0.00   57.69
SUMMER LAKE 1 S           | 1957-2005 |  0.00  0.00  0.00  5.19  7.28  8.71 10.88  9.79  6.48  3.48  1.90  0.00   53.71
UNION EXP STN             | 1928-2005 |  0.00  0.00  0.00  3.16  4.80  6.03  7.49  6.80  4.32  2.74  0.00  0.00   35.34
WARM SPRINGS RESERVOIR    | 1931-1974 |  0.00  0.00  0.00  4.85  7.21  8.66 11.73 10.19  6.77  3.49  0.00  0.00   52.90
WICKIUP DAM               | 1941-2005 |  0.00  0.00  0.00  2.99  5.14  6.46  7.99  6.84  4.68  2.46  0.00  0.00   36.56
WINCHESTER                | 1950-2005 |  0.00  0.00  0.00  2.25  3.79  5.51  6.93  6.38  4.51  1.33  0.00  0.00   30.70
WINCHESTER 3 W F STN      | 1981-1989 |  0.91  0.96  2.06  3.62  5.04  6.62  8.48  8.19  4.94  2.46  1.17  0.87   45.32


                                                         UTAH

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ARCHES NATL PARK HQ       | 1980-2005 |  0.00  0.00  0.00  7.44  9.81 12.33 12.94 11.15  8.16  4.73  0.00  0.00   66.56
BEAR RIVER BAY            | 1969-1996 |  0.00  0.00  0.00  6.27 10.17 12.59 13.86 12.29  7.83  4.89  0.00  0.00   67.90
BEAR RIVER REFUGE         | 1948-1984 |  0.00  0.00  0.00  4.80  7.21  8.66 10.46  9.30  6.13  3.27  1.27  0.00   51.10
BRYCE CANYON NAT'L PRK    | 1971-1978 |  0.00  0.00  0.00  0.00  6.86  7.86  8.07  7.21  5.30  0.00  0.00  0.00   35.30
FARMINGTON USU FLD STN    | 1948-2005 |  0.00  0.00  0.00  0.00  7.33  6.35  9.25  8.62  4.63  2.97  0.00  0.00   39.15
FERRON                    | 1948-2005 |  0.00  0.00  0.00  5.20  5.66  8.06  6.58  6.39  5.49  3.53  0.00  0.00   40.91
FISH SPRINGS REFUGE       | 1960-2005 |  0.00  0.00  0.00  7.02 10.70 12.90 15.92 13.58  9.92  5.84  0.00  0.00   75.88
FLAMING GORGE             | 1957-2005 |  0.00  0.00  0.00  0.00  6.23  8.74  9.71  8.62  5.76  3.94  0.00  0.00   43.00
FORT DUCHESNE             | 1894-2005 |  0.00  0.00  0.00  5.16  7.41  8.61  9.06  7.98  5.57  3.25  0.00  0.00   47.04
GREEN RIVER AVIATION      | 1893-2005 |  0.00  0.00  0.00  6.07  8.07  9.29  9.49  7.97  5.74  3.52  1.60  0.00   51.75
GUNNISON                  | 1956-1990 |  0.00  0.00  0.00  5.10  7.23  8.70  9.65  8.26  6.03  3.81  0.00  0.00   48.78
HITE                      | 1949-1962 |  0.00  0.00  0.00  7.84 11.74 14.14 14.01 12.44  8.34  4.86  1.94  0.00   75.31
LOGAN USU EXP STN         | 1950-1978 |  0.00  0.00  0.00  4.01  5.98  7.05  8.37  7.50  5.02  2.92  0.00  0.00   40.85
LOGAN 5 SW EXP FARM       | 1969-2005 |  0.00  0.00  3.30  4.57  6.57  8.48 10.05  8.93  5.88  3.51  0.00  0.00   51.29
MANILA                    | 1952-2005 |  0.00  0.00  0.00  0.00  7.31  8.66  9.83  8.37  6.50  4.63  0.00  0.00   45.30
MEXICAN HAT               | 1948-2005 |  0.00  0.00  6.31  8.45 11.99 14.42 14.87 12.48  9.37  5.52  2.25  0.00   85.66
MILFORD                   | 1906-2005 |  0.00  0.00  0.00  7.47 10.22 13.54 15.47 13.24  9.88  6.16  2.32  0.00   78.30
MOAB                      | 1889-2005 |  0.00  0.00  4.19  7.29 10.41 12.03 12.72 10.75  7.66  4.25  2.26  0.00   71.56
MORGAN                    | 1948-2005 |  0.00  0.00  0.00  4.94  6.96  7.30  9.07  8.01  6.15  3.74  0.00  0.00   46.17
PIUTE DAM                 | 1948-1971 |  0.00  0.00  0.00  0.00  7.91  9.98 10.13  8.40  6.98  4.60  0.00  0.00   48.00
PROVO AIRPORT             | 1948-1953 |  0.00  0.00  2.91  6.03  6.83  8.62  8.88  8.36  6.09  3.41  0.00  0.00   51.13
PROVO BYU                 | 1980-2005 |  0.00  0.00  2.59  4.71  6.81  8.77  9.85  8.70  5.59  2.92  0.00  0.00   49.94
PROVO RADIO KAYK          | 1952-1977 |  0.00  0.00  0.00  4.38  5.94  7.53  8.32  7.58  5.40  3.21  1.53  0.00   43.89
ST GEORGE                 | 1862-2005 |  0.00  0.00  4.57  7.36 10.08 12.22 13.17 11.55  8.22  4.83  2.68  0.00   74.68
SALTAIR SALT PLANT        | 1956-1991 |  0.00  0.00  3.66  6.20  9.19 11.88 14.40 12.67  8.58  4.86  2.32  0.00   73.76
SCOFIELD DAM              | 1948-1991 |  0.00  0.00  0.00  0.00  5.52  7.84  8.29  6.94  5.13  3.90  0.00  0.00   37.62
SEVIER DRY LAKE           | 1987-1993 |  0.00  0.00  2.93  6.33 13.52 16.06 18.32  0.00  0.00  0.00  0.00  0.00   57.16
STRAWBERRY RESERVOIR EA   | 1956-1977 |  0.00  0.00  0.00  0.00  5.82  7.28  7.87  7.31  5.08  3.02  0.00  0.00   36.38
UTAH LAKE LEHI            | 1928-2003 |  0.00  0.00  2.77  5.19  7.11  8.80  9.61  8.58  6.10  3.81  1.42  0.00   53.39
VERNAL ARPT               | 1928-2005 |  0.00  0.00  0.00  5.07  6.41  7.48  6.64  6.34  4.89  2.92  0.00  0.00   39.75
WANSHIP DAM               | 1955-2005 |  0.00  0.00  0.00  0.00  6.09  6.79  7.41  6.59  4.79  3.19  0.00  0.00   34.86


                                                         WASHINGTON

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

BELLINGHAM 2 N            | 1948-1985 |  0.00  0.00  0.00  2.75  4.59  5.35  6.28  5.56  3.34  1.22  0.00  0.00   29.09
BELLINGHAM 3 SSW          | 1985-2005 |  0.00  0.00  0.00  0.00  3.77  4.69  5.31  4.50  2.65  1.39  0.00  0.00   22.31
BUMPING LAKE              | 1931-1967 |  0.00  0.00  0.00  0.00  4.01  4.13  5.58  4.63  3.19  2.34  0.00  0.00   23.88
CONNELL 1 W               | 1960-2003 |  0.00  0.00  0.00  5.43  8.35  9.89 11.90 10.77  6.88  3.00  0.00  0.00   56.22
ELTOPIA 6 W               | 1954-1973 |  0.00  0.00  3.23  5.46  6.61  7.73  9.36  7.56  4.93  2.45  0.83  0.00   48.16
ELTOPIA 8 WSW             | 1974-2005 |  0.00  0.00  0.00  4.44  6.10  7.05  8.07  7.04  4.44  2.06  0.62  0.00   39.82
LAKE KACHESS              | 1931-1977 |  0.00  0.00  0.00  2.37  3.78  4.82  6.12  5.12  3.20  0.00  0.00  0.00   25.41
LIND 3 NE EXP STN         | 1931-2005 |  0.00  0.00  0.00  5.35  8.02  9.40 12.02 10.44  6.87  2.59  0.00  0.00   54.69
MOSES LAKE 3 E            | 1943-1979 |  0.00  0.00  0.00  5.51  7.50  8.78 10.29  8.10  5.53  2.79  0.00  0.00   48.50
OROVILLE 1 S              | 1960-1970 |  0.00  0.00  0.00  4.49  5.82  6.36  7.42  6.22  4.28  1.99  0.00  0.00   36.58
OTHELLO 6 ESE             | 1941-2002 |  0.00  0.00  0.00  5.40  7.60  9.00 10.77  9.14  6.12  2.92  0.00  0.00   50.95
PROSSER 4 NE              | 1931-2005 |  0.00  0.00  2.49  4.86  6.57  7.50  8.61  7.09  4.73  2.48  0.80  0.69   45.82
PUYALLUP 2 W EXP STN      | 1931-1995 |  0.00  0.71  1.58  2.46  3.97  4.63  5.61  4.97  2.92  1.28  0.61  0.00   28.74
QUINCY 1 S                | 1941-2005 |  0.00  0.00  0.00  5.76  8.05  9.00 10.20  8.52  5.52  2.60  0.00  0.00   49.65
RIMROCK TIETON DAM        | 1947-1977 |  0.00  0.00  0.00  0.00  5.35  7.08 15.41  6.71  3.70  1.63  0.00  0.00   39.88
SEATTLE MAPLE LEAF R      | 1941-1960 |  0.61  0.82  1.80  3.26  4.64  5.12  6.70  5.19  3.49  1.62  0.74  0.53   34.52
SPOKANE WSO AIRPORT       | 1889-2005 |  0.00  0.00  0.00  4.66  7.27  8.57 11.28 10.22  6.41  0.00  0.00  0.00   48.41
WALLA WALLA 3 W ENT LA    | 1931-1962 |  0.00  0.00  0.00  4.79  6.26  7.61  9.72  7.95  4.78  2.58  0.00  0.00   43.69
WENATCHEE EXP STN         | 1950-1997 |  0.00  0.00  0.00  4.74  6.87  7.87  9.38  7.83  4.19  0.00  0.00  0.00   40.88
WHITMAN MISSION           | 1962-2005 |  0.00  0.00  0.00  4.58  6.58  8.17 10.34  9.08  5.52  2.84  0.00  0.00   47.11
WIND RIVER                | 1901-1977 |  0.00  0.00  0.00  2.91  4.19  4.64  6.15  4.97  3.31  1.62  0.00  0.00   27.79
YAKIMA WSO AP             | 1946-2005 |  0.00  0.00  0.00  5.27  7.62  8.71 10.42  9.29  5.90  0.00  0.00  0.00   47.21


                                                         WYOMING

                                         MONTHLY AVERAGE PAN EVAPORATION (INCHES)

                          |  PERIOD   |
                          | OF RECORD |   JAN   FEB   MAR   APR   MAY   JUN   JUL   AUG   SEP   OCT   NOV   DEC    YEAR

ANCHOR DAM                | 1961-1979 |  0.00  0.00  0.00  0.00  6.46  7.57  9.66  8.31  5.95  5.33  0.00  0.00   43.28
ARCHER                    | 1948-2005 |  0.00  0.00  0.00  3.66  5.71  7.08  8.30  7.94  5.94  4.45  0.00  0.00   43.08
BOYSEN DAM                | 1948-2005 |  0.00  0.00  0.00  5.44  6.72  8.24  9.86  9.08  5.92  3.20  0.00  0.00   48.46
FARSON                    | 1915-2005 |  0.00  0.00  0.00  0.00  7.45  9.37 10.67  8.94  6.53  3.80  0.00  0.00   46.76
GILLETTE 9 ESE            | 1925-2005 |  0.00  0.00  0.00  4.52  6.40  7.50  9.88  9.44  6.18  4.36  2.39  0.00   50.67
GREEN RIVER               | 1915-2005 |  0.00  0.00  0.00  0.00  8.22  9.71 11.08  9.80  6.82  4.62  0.00  0.00   50.25
HEART MOUNTAIN            | 1949-2005 |  0.00  0.00  0.00  3.50  5.82  6.37  7.35  6.67  4.37  3.43  0.00  0.00   37.51
KEYHOLE DAM               | 1949-1958 |  0.00  0.00  0.00  4.99  6.06  7.25  9.56  9.01  6.04  3.68  0.00  0.00   46.59
LARAMIE 2 NW              | 1966-2005 |  0.00  0.00  0.00  0.00  8.21 10.26 10.71  9.58  7.48  4.76  0.00  0.00   51.00
LOOKOUT 14 NE             | 1948-1965 |  0.00  0.00  0.00  0.00  7.50 11.32 10.89 10.40  7.76  7.30  0.00  0.00   55.17
MORTON 1 NW               | 1949-1968 |  0.00  0.00  0.00  3.91  5.59  6.73  8.27  7.31  4.96  3.35  0.00  0.00   40.12
PATHFINDER DAM            | 1948-1991 |  0.00  0.00  3.20  5.07  6.78  8.78 10.53  9.75  7.17  4.95  2.81  0.00   59.04
SEMINOE DAM               | 1948-2005 |  0.00  0.00  0.00  0.00  5.24  8.27  8.99  8.12  5.59  0.00  0.00  0.00   36.21
SHERIDAN FIELD STN        | 1920-2005 |  0.00  0.00  0.00  3.55  6.29  7.88 10.21  9.73  6.48  0.00  0.00  0.00   44.14
WHALEN DAM                | 1949-1991 |  0.00  0.00  3.32  5.17  7.44  9.00 10.39  9.09  6.24  4.18  0.00  0.00   54.83