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Water Resources Data System
Dept 3943
1000 E. University Ave.
Laramie, WY 82071

wrds@uwyo.edu
Ph (307) 766-6651
Fax (307) 766-3785


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United States           Natural Resources             Water and Climate Center
Department of           Conservation                          Portland, Oregon
Agriculture             Service

          S N O W  -  P R E C I P I T A T I O N    U P D A T E

              Based on Mountain Data from NRCS SNOTEL Sites
                    As of TUESDAY: MAY 20 , 2014
------------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT    TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Median  Median  Current  Average  Avg
------------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    5.5      .0       *   30.3    24.5    124
 BLACK BEAR               8170   43.5    33.8    129    48.5    44.6    109
 BLIND BULL SUM           8650   38.9    19.9    195    26.1    23.2    112
 COTTONWOOD CREEK         7670   19.2     6.3    305    39.6    30.0    132
 EAST RIM DIVIDE          7930     .0      .5      0*   17.8    14.1    126
 GRAND TARGHEE            9260   49.6    42.3    117    44.8    36.8    122
 GRANITE CREEK            6770    9.4      .0       *   27.6    22.9    121
 GRASSY LAKE              7265   26.6    17.4    153    46.4    41.8    111
 GROS VENTRE SUMMIT       8750    9.5     5.6    170    16.8    16.1    104
 GUNSIGHT PASS            9820   17.4    10.4    167    22.1    17.7    125
 LEWIS LAKE DIVIDE        7850   34.8    22.4    155    46.8    41.0    114
 PHILLIPS BENCH           8200   29.6    19.2    154    39.7    32.8    121
 SALT RIVER SUMMIT        7760    2.1      .0       *   22.2    19.9    112
 SNAKE RIVER STATION      6920     .0      .0       *   30.4    26.5    115
 SPRING CREEK DIVIDE      9000     -M    20.3       *     -M    28.0       *
 THUMB DIVIDE             7980    9.4     1.4    671*   23.6    22.8    104
 TOGWOTEE PASS            9580   31.6    23.0    137    37.5    29.7    126
 TWO OCEAN PLATEAU        9240   40.1    28.3    142    39.9    32.8    122
 WILLOW CREEK             8380   28.1    16.6    169    47.4    40.8    116
 YOUNTS PEAK              8350     -M    11.8       *     -M    19.5       *
                                                -----                  -----
                Basin Index (%)                  160                    117


MADISON-GALLATIN

 BLACK BEAR               8170   43.5    33.8    129    48.5    44.6    109
 CANYON                   7870    8.0     2.2    364    20.3    19.9    102
 MADISON PLATEAU          7750   21.0    14.3    147    30.8    31.5     98
 WEST YELLOWSTONE         6700     .0      .0       *   19.7    17.5    113
 WHISKEY CREEK            6800   10.5     5.6    188    26.1    24.3    107
                                                -----                  -----
                Basin Index (%)                  148                    106


YELLOWSTONE

 BEARTOOTH LAKE           9360   32.8    21.6    152    34.9    24.1    145
 BURNT MTN                5880     .0      .0       *   26.0    19.1    136
 CANYON                   7870    8.0     2.2    364    20.3    19.9    102
 COLE CREEK               7850   26.1    16.2    161    22.6    19.5    116
 EVENING STAR             9200   37.9    23.7    160    46.6    33.3    140
 FISHER CREEK             9100   46.7    32.8    142    47.2    38.3    123
 NORTHEAST ENTRANCE       7350     .0      .0       *   19.4    15.5    125
 PARKER PEAK              9400   36.2    19.8    183    35.5    22.4    158
 SYLVAN LAKE              8420   19.8    15.1    131    35.4    27.6    128
 THUMB DIVIDE             7980    9.4     1.4    671*   23.6    22.8    104
 TWO OCEAN PLATEAU        9240   40.1    28.3    142    39.9    32.8    122
 WHITE MILL               8700   35.0    22.3    157    35.0    28.9    121
 WOLVERINE                7650     .5      .0       *   21.2    15.5    137
                                                -----                  -----
                Basin Index (%)                  159                    127


WIND RIVER

 BURROUGHS CREEK          8750     -M     9.3       *     -M    19.9       *
 CASTLE CREEK             8400     .0      -M       *   14.8      -M       *
 COLD SPRINGS             9630     .0      .0       *   15.7    14.4    109
 DEER PARK                9700   14.8    10.5    141    24.3    25.9     94
 HOBBS PARK              10100   14.7    13.1    112    18.4    19.4     95
 KIRWIN                   9550   17.1     8.4    204    22.1    15.9    139
 LITTLE WARM              9370    7.8     2.7    289    20.2    17.4    116
 OWL CREEK                8975     .0      .0       *    9.5     9.6     99
 SOUTH PASS               9040   10.3     6.8    151    19.2    22.4     86
 ST. LAWRENCE ALT         8620     .0      .0       *   12.7    13.5     94
 TOGWOTEE PASS            9580   31.6    23.0    137    37.5    29.7    126
 TOWNSEND CREEK           8700     .0      .0       *   14.6    17.1     85
                                                -----                  -----
                Basin Index (%)                  149                    105


BIGHORN BASIN

 BALD MTN.                9380   31.5    19.2    164    25.4    22.1    115
 BEAR TRAP MEADOW         8200     .0      .0       *   14.2    12.6    113
 BONE SPRINGS DIV         9350   24.5    14.3    171    22.3    20.8    107
 GRAVE SPRINGS            8550    7.9     2.6    304    15.5    15.0    103
 KIRWIN                   9550   17.1     8.4    204    22.1    15.9    139
 MARQUETTE                8760   12.9      -M       *   17.8      -M       *
 MIDDLE POWDER            7760   12.1     5.3    228    17.5    16.2    108
 OWL CREEK                8975     .0      .0       *    9.5     9.6     99
 POWDER RIVER PASS        9480   12.0     5.4    222    20.2    17.3    117
 SHELL CREEK              9580   21.5    15.3    141    21.5    18.5    116
 TIMBER CREEK             7950     .0      .0       *   13.5    12.2    111
                                                -----                  -----
                Basin Index (%)                  180                    113


SHOSHONE RIVER

 BLACKWATER               9780   34.3    24.3    141    34.8    26.0    134
 EVENING STAR             9200   37.9    23.7    160    46.6    33.3    140
 MARQUETTE                8760   12.9      -M       *   17.8      -M       *
 SYLVAN ROAD              7120     .0      .0       *   25.7    20.3    127
 YOUNTS PEAK              8350     -M    11.8       *     -M    19.5       *
                                                -----                  -----
                Basin Index (%)                  150*                   135


POWDER RIVER

 BEAR TRAP MEADOW         8200     .0      .0       *   14.2    12.6    113
 CLOUD PEAK RESERVOIR     9860   24.6    14.8    166    26.0    19.6    133
 GRAVE SPRINGS            8550    7.9     2.6    304    15.5    15.0    103
 HANSEN SAWMILL           8360    1.4      .0       *   16.2    12.9    126
 MIDDLE POWDER            7760   12.1     5.3    228    17.5    16.2    108
 POWDER RIVER PASS        9480   12.0     5.4    222    20.2    17.3    117
 SOLDIER PARK             8720    7.7      -M       *   16.5      -M       *
                                                -----                  -----
                Basin Index (%)                  206                    117


TONGUE RIVER

 BIG GOOSE                7990   10.5     4.8    219    20.1    17.2    117
 BONE SPRINGS DIV         9350   24.5    14.3    171    22.3    20.8    107
 BURGESS JUNCTION         7880   15.2     8.1    188    21.2    17.0    125
 DOME LAKE                8880   16.0     6.2    258    21.0    19.0    111
 LITTLE GOOSE             8870   13.2      -M       *   23.2      -M       *
 SUCKER CREEK             8880   16.7     8.6    194    25.5    20.2    126
 TIE CREEK                6870    1.3      .0       *   19.9    17.2    116
                                                -----                  -----
                Basin Index (%)                  200                    117


BELLE FOURCHE

 COLE CANYON              5910     .0      .0       *   17.9    14.9    120
                                                -----                  -----
                Basin Index (%)                     *                   120


CHEYENNE RIVER BASIN

 BLIND PARK               6890     .0      .0       *   20.8    16.6    125
 NORTH RAPID CREEK        6130     .0      .0       *   20.1    14.5    139
                                                -----                  -----
                Basin Index (%)                     *                   132


UPPER N. PLATTE

 ARAPAHO RIDGE           10960   30.3    18.1    167    34.5    28.5    121
 BLACKHALL MTN            9820   37.8      -M       *   43.5      -M       *
 COLUMBINE                9160   20.5     3.0    683    41.6    30.6    136
 DIVIDE PEAK              8880    8.2     5.7    144    29.7    26.5    112
 JOE WRIGHT              10120   32.6    21.1    155    41.1    32.8    125
 LAPRELE CREEK            8375     .2      .0       *   17.0    16.9    101
 MED BOW                 10500     -M      -M       *   48.4      -M       *
 NORTH FRENCH CREEK      10130   38.8    29.6    131    42.3    33.7    126
 NEVER SUMMER            10280   27.7    20.3    136    25.8      -M       *
 OLD BATTLE              10000   39.1    32.5    120    43.7    42.1    104
 RAWAH                    9020    5.2      .4   1300*   23.1    18.9    122
 SAGE CREEK BASIN         7850     .0      .0       *   14.6    17.4     84
 SAND LAKE               10050   39.8    27.8    143    41.9    31.9    131
 SOUTH BRUSH CREEK        8440     .0      .0       *   19.7    20.1     98
 TOWER                   10500   55.0    47.7    115    60.4    47.9    126
 WEBBER SPRINGS           9250   18.4    12.0    153    35.8    32.1    112
 WILLOW CREEK PASS        9540   13.5     9.3    145    19.3    17.3    112
 ZIRKEL                   9340   29.8     9.7    307      -M    33.4       *
                                                -----                  -----
                Basin Index (%)                  151                    117


SWEETWATER

 DEER PARK                9700   14.8    10.5    141    24.3    25.9     94
 LARSEN CREEK             9000     .0     3.6      0    17.9      -M       *
 SOUTH PASS               9040   10.3     6.8    151    19.2    22.4     86
                                                -----                  -----
                Basin Index (%)                  120                     90


LOWER N. PLATTE

 CASPER MTN.              7900   12.0     4.5    267    21.1    20.4    103
 LAPRELE CREEK            8375     .2      .0       *   17.0    16.9    101
 RENO HILL                8400   17.2     3.6    478    28.2    21.4    132
 WINDY PEAK               7900     .2      .0       *   16.8    14.9    113
                                                -----                  -----
                Basin Index (%)                  365                    113


LARAMIE RIVER

 BROOKLYN LAKE           10240   28.8    16.4    176    37.9    27.2    139
 CINNABAR PARK            9574   21.1    12.3    172    36.7    29.5    124
 CROW CREEK               8330     .8      .0       *   17.7    15.1    117
 DEADMAN HILL            10220   27.2    16.5    165    30.4    23.0    132
 RAWAH                    9020    5.2      .4   1300*   23.1    18.9    122
 ROACH                    9700   17.6    11.5    153    30.9    24.7    125
                                                -----                  -----
                Basin Index (%)                  176                    128


S. PLATTE

 BLACK MOUNTAIN           8920    2.4      -M       *   19.1      -M       *
 CROW CREEK               8330     .8      .0       *   17.7    15.1    117
 DEADMAN HILL            10220   27.2    16.5    165    30.4    23.0    132
                                                -----                  -----
                Basin Index (%)                  170*                   126


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440     .0      .0       *   20.1    18.6    108
 DIVIDE PEAK              8880    8.2     5.7    144    29.7    26.5    112
 ELK RIVER                8700    4.9      .0       *   26.9    24.6    109
 LITTLE SNAKE RIVER       8915     -M    13.3       *     -M    35.2       *
 OLD BATTLE              10000   39.1    32.5    120    43.7    42.1    104
 SAGE CREEK BASIN         7850     .0      .0       *   14.6    17.4     84
 SANDSTONE RS             8150     -M      .0       *   20.9    22.5     93
 WHISKEY PARK             8950   29.9    21.9    137    45.8    33.8    136
                                                -----                  -----
                Basin Index (%)                  137*                   109


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    9.1     3.1    294    17.3    16.8    103
 BLIND BULL SUM           8650   38.9    19.9    195    26.1    23.2    112
 EAST RIM DIVIDE          7930     .0      .5      0*   17.8    14.1    126
 ELKHART PARK G.S.        9400   13.9     5.7    244    20.3    16.7    122
 GROS VENTRE SUMMIT       8750    9.5     5.6    170    16.8    16.1    104
 GUNSIGHT PASS            9820   17.4    10.4    167    22.1    17.7    125
 KENDALL R.S.             7740    6.1      .0       *   24.9    16.8    148
 LOOMIS PARK              8240   12.1     2.6    465    27.7    20.5    135
 NEW FORK LAKE            8340    2.5      .0       *   15.0    13.5    111
 POCKET CREEK             9360    9.4      -M       *   15.2      -M       *
 SNIDER BASIN             8060     .0      .4      0*   21.7    16.8    129
 SPRING CREEK DIVIDE      9000     -M    20.3       *     -M    28.0       *
 TRIPLE PEAK              8500   22.2     8.4    264    41.3    30.2    137
                                                -----                  -----
                Basin Index (%)                  233                    124


LOWER GREEN RIVER

 BLACKS FORK JCT          8870     .0      -M       *   16.7      -M       *
 BUCK PASTURE             9700    3.3      -M       *   21.2      -M       *
 EF BLACKS FORK GS        9360     -M      -M       *   13.7      -M       *
 HAMS FORK                7840     .0      .0       *   16.8    14.4    117
 HEWINTA                  9519     .0      .0       *   18.4    17.7    104
 HICKERSON PARK           9145     .1      .0       *   12.1    13.4     90
 HOLE-IN-ROCK             9150     .0      .0       *   13.3    13.0    102
 INDIAN CREEK             9425   26.0    18.5    141    30.7    27.0    114
 KELLEY R.S.              8180    7.1     2.8    254    23.6    21.8    108
 SPIRIT LK               10235    2.9      -M       *   18.8      -M       *
 STEEL CREEK PARK        10200   18.8    14.7    128    21.1    21.0    100
                                                -----                  -----
                Basin Index (%)                  144*                   106


UPPER BEAR RIVER

 BEAR RIVER RS            8777     .0      -M       *   15.3      -M       *
 BUG LAKE                 7950    9.7     4.9    198    24.4    23.5    104
 BURTS MILLER RANCH       8000     .1      -M       *    8.7      -M       *
 CHALK CREEK #1           8993   12.6    15.6     81    27.6    30.8     90
 HAYDEN FORK              9212     .1      .0       *   25.1    25.8     97
 KELLEY R.S.              8180    7.1     2.8    254    23.6    21.8    108
 LILY LAKE                9156     .2      .0       *   18.7    21.3     88
 MONTE CRISTO             8960   15.6    14.9    105    30.0    31.6     95
 SALT RIVER SUMMIT        7760    2.1      .0       *   22.2    19.9    112
                                                -----                  -----
                Basin Index (%)                  124*                    98

-----------------------------------------------------------------------------


 -M   = Missing data
  *   = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and

Total Precipitation values

If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.

The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.

The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.

Contact your state water supply staff for assistance.

Medians and averages are calculated for the period 1981-2010.

Provisional data, subject to revision.

* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for  the year.


* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.

The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.