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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 31 , 2011
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    10.3      .0      *    36.3    27.0   134
 COTTONWOOD CREEK         7670    30.4     5.6   543     50.6    35.7   142
 GRAND TARGHEE            9260    70.0      -M      *      -M      -M      *
 GRANITE CREEK            6770    13.8     1.3  1062*    34.8    24.8   140
 GRASSY LAKE              7265    36.2    14.9   243     58.0    45.0   129
 GROS VENTRE SUMMIT       8750    15.7     4.1   383     23.5    17.6   134
 GUNSIGHT PASS            9820      -M      -M      *    28.0      -M      *
 LEWIS LAKE DIVIDE        7850    44.4    18.7   237     50.8    45.3   112
 PHILLIPS BENCH           8200    37.7    14.6   258     47.8    36.5   131
 SALT RIVER SUMMIT        7760     9.7      .0      *    29.6    24.0   123
 SNAKE RIVER STATION      6920      -M      .0      *    37.5    28.3   133
 SPRING CREEK DIVIDE      9000    42.5    15.7   271     44.6    33.0   135
 THUMB DIVIDE             7980    16.4     2.4   683     30.9    24.7   125
 TOGWOTEE PASS            9580    42.8    22.4   191     46.3    32.6   142
 TWO OCEAN PLATEAU        9240    53.9    25.6   211     45.6    36.2   126
 WILLOW CREEK             8380    42.1    15.1   279     59.2    42.5   139
                                                -----                  -----
                Basin wide percent of average    282                    131


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    34.1    20.6   166     36.9    26.9   137
 BLACK BEAR               8170    53.9    26.9   200     63.4    50.2   126
 CANYON                   7870    14.3     1.7   841     27.2    20.4   133
 FISHER CREEK             9100    53.9    30.4   177     56.1    46.5   121
 MADISON PLATEAU          7750    31.4     9.6   327     46.2    34.2   135
 NORTHEAST ENTRANCE       7350      .0      .5     0*    23.3    17.5   133
 PARKER PEAK              9400    41.6    18.9   220     41.8    23.1   181
 SYLVAN LAKE              8420    28.5    12.1   236     42.2    28.9   146
 THUMB DIVIDE             7980    16.4     2.4   683     30.9    24.7   125
 TWO OCEAN PLATEAU        9240    53.9    25.6   211     45.6    36.2   126
 WHISKEY CREEK            6800    13.8     1.5   920*    35.1    27.2   129
 WHITE MILL               8700    35.3    18.6   190     40.7    35.1   116
 WOLVERINE                7650     2.5      .0      *    21.9    18.2   120
                                                -----                  -----
                Basin wide percent of average    225                    131


WIND RIVER

 BURROUGHS CREEK          8750    20.6     3.8   542     28.5    22.5   127
 CASTLE CREEK             8400      .0      -M      *    14.4      -M      *
 COLD SPRINGS             9630    10.8     1.1   982     20.0    17.0   118
 DEER PARK                9700    25.5     8.5   300     34.0    30.8   110
 HOBBS PARK              10100    25.9    10.5   247     27.1    20.9   130
 LITTLE WARM              9370    16.1     2.2   732     22.3    19.9   112
 SOUTH PASS               9040    20.8     6.8   306     26.0    25.9   100
 ST. LAWRENCE ALT         8620     2.1      .7   300*    19.8    15.1   131
 TOGWOTEE PASS            9580    42.8    22.4   191     46.3    32.6   142
 TOWNSEND CREEK           8700     8.0     1.9   421     22.1    18.7   118
                                                -----                  -----
                Basin wide percent of average    298                    121


BIGHORN BASIN

 BALD MTN.                9380    41.0    17.0   241     33.8    25.2   134
 BEAR TRAP MEADOW         8200     8.0      .0      *    19.7    14.1   140
 BLACKWATER               9780    43.0    25.1   171     41.6    28.8   144
 BONE SPRINGS DIV         9350    33.2     8.8   377     29.7    22.2   134
 EVENING STAR             9200    42.0    27.1   155     51.9    34.3   151
 GRAVE SPRINGS            8550    12.8     2.0   640     21.0    16.0   131
 KIRWIN                   9550    18.7     5.8   322     24.1    17.4   139
 MARQUETTE                8760    14.5      -M      *    20.1    17.9   112
 MIDDLE POWDER            7760    12.6     3.0   420     21.4    19.0   113
 OWL CREEK                8975     2.0      .6   333     14.9    11.0   135
 POWDER RIVER PASS        9480    23.1     2.6   888     30.4    19.5   156
 SHELL CREEK              9580    29.6    10.9   272     29.5    20.4   145
 SYLVAN LAKE              8420    28.5    12.1   236     42.2    28.9   146
 SYLVAN ROAD              7120      .0      .1     0*    31.3    23.2   135
 TIMBER CREEK             7950     2.0      .6   333     16.3    14.3   114
 YOUNTS PEAK              8350    20.3     7.6   267     25.3    22.0   115
                                                -----                  -----
                Basin wide percent of average    257                    136


SHOSHONE RIVER

 BLACKWATER               9780    43.0    25.1   171     41.6    28.8   144
 EVENING STAR             9200    42.0    27.1   155     51.9    34.3   151
 KIRWIN                   9550    18.7     5.8   322     24.1    17.4   139
 MARQUETTE                8760    14.5      -M      *    20.1    17.9   112
 SYLVAN LAKE              8420    28.5    12.1   236     42.2    28.9   146
 SYLVAN ROAD              7120      .0      .1     0*    31.3    23.2   135
 YOUNTS PEAK              8350    20.3     7.6   267     25.3    22.0   115
                                                -----                  -----
                Basin wide percent of average    196                    137


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     8.0      .0      *    19.7    14.1   140
 BIG GOOSE                7990    13.7     3.3   415     24.1    16.3   148
 BONE SPRINGS DIV         9350    33.2     8.8   377     29.7    22.2   134
 BURGESS JUNCTION         7880    15.7     3.1   506     25.6    18.4   139
 CLOUD PEAK RESERVOIR     9860    27.8     8.2   339     30.0    21.6   139
 DOME LAKE                8880    20.7     3.5   591     26.7    20.5   130
 GRAVE SPRINGS            8550    12.8     2.0   640     21.0    16.0   131
 HANSEN SAWMILL           8360     7.8      .2  3900*    20.1    14.0   144
 LITTLE GOOSE             8870    18.1      -M      *    27.7      -M      *
 MIDDLE POWDER            7760    12.6     3.0   420     21.4    19.0   113
 POWDER RIVER PASS        9480    23.1     2.6   888     30.4    19.5   156
 SOLDIER PARK             8720    11.3      -M      *    20.5      -M      *
 SUCKER CREEK             8880    24.3     4.0   608     31.3    21.4   146
 TIE CREEK                6870     3.4      .0      *    24.9    17.1   146
                                                -----                  -----
                Basin wide percent of average    525                    139


BELLE FOURCHE

 BLIND PARK               6890      .0      .0   100*    28.5    17.8   160
 COLE CANYON              5910      .0      .0   100*    24.4    12.8   191
 NORTH RAPID CREEK        6130      .0      .0   100*    24.5    13.9   176
                                                -----                  -----
                Basin wide percent of average       *                   174


UPPER N. PLATTE RIVER

 CINNABAR PARK            9574    28.3     1.9  1489     46.9    26.7   176
 COLUMBINE                9160    24.8     2.4  1033*    48.5    32.1   151
 DIVIDE PEAK              8880    21.8     4.1   532     41.0    27.4   150
 ELK RIVER                8700    16.1     1.5  1073*    37.9    25.9   146
 JOE WRIGHT              10120    51.1    17.6   290     53.6    34.7   154
 NORTH FRENCH CREEK      10130    64.2    24.6   261     61.6    34.2   180
 OLD BATTLE              10000    58.2    26.4   220     67.1    44.1   152
 SAGE CREEK BASIN         7850      .0     2.4     0     25.9    15.9   163
 SOUTH BRUSH CREEK        8440      -M     1.9      *    33.2    23.6   141
 TOWER                   10500    78.8    43.4   182     72.0    49.9   144
 WEBBER SPRINGS           9250    28.9     7.1   407     51.1    34.6   148
 WILLOW CREEK PASS        9540      -M     3.6      *    28.9    18.7   155
                                                -----                  -----
                Basin wide percent of average    283                    154


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240      -M    12.3      *    47.1    31.0   152
 CASPER MTN.              7900     4.9     4.5   109     23.5    23.9    98
 DEADMAN HILL            10220    30.4    11.7   260     35.0    24.6   142
 DEER PARK                9700    25.5     8.5   300     34.0    30.8   110
 LAPRELE CREEK            8375     3.5      .9   389*    22.3    20.0   112
 RENO HILL                8400    12.0     3.7   324     27.5    24.6   112
 ROACH                    9700    22.9     6.3   363     35.7    26.3   136
 SAND LAKE               10050    52.2    26.6   196     52.9    34.2   155
 SOUTH PASS               9040    20.8     6.8   306     26.0    25.9   100
 WINDY PEAK               7900      .0      .1     0*    20.4    17.0   120
                                                -----                  -----
                Basin wide percent of average    249                    126


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M      .0      *    25.8    20.9   123
 DIVIDE PEAK              8880    21.8     4.1   532     41.0    27.4   150
 OLD BATTLE              10000    58.2    26.4   220     67.1    44.1   152
 SANDSTONE RS             8150     7.3      .1  7300*    37.4    24.7   151
 WHISKEY PARK             8950      -M    14.4      *    59.4    37.7   158
                                                -----                  -----
                Basin wide percent of average    285*                   149


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    14.3     1.9   753     23.9    18.5   129
 BLIND BULL SUM           8650    42.2    18.3   231     32.3    28.0   115
 EAST RIM DIVIDE          7930      .1     2.0     5     20.0    16.0   125
 ELKHART PARK G.S.        9400    13.3     3.7   359     20.2    18.9   107
 GROS VENTRE SUMMIT       8750    15.7     4.1   383     23.5    17.6   134
 GUNSIGHT PASS            9820      -M      -M      *    28.0      -M      *
 KENDALL R.S.             7740     2.3      .0      *    23.2    18.6   125
 LOOMIS PARK              8240    14.5     2.8   518     30.5    22.4   136
 NEW FORK LAKE            8340     3.6      .0      *    16.8    15.8   106
 POCKET CREEK             9360    14.4      -M      *    22.1      -M      *
 SNIDER BASIN             8060    11.0      .0      *    26.6    20.4   130
 SPRING CREEK DIVIDE      9000    42.5    15.7   271     44.6    33.0   135
 TRIPLE PEAK              8500    33.3     5.6   595     47.2    31.8   148
                                                -----                  -----
                Basin wide percent of average    356                    128


LOWER GREEN RIVER

 HAMS FORK                7840      .3      .0      *    22.8    16.9   135
 HEWINTA                  9519    11.7      .7  1671*    28.5    20.2   141
 HICKERSON PARK           9145      .4      .1   400*    18.6    12.5   149
 HOLE-IN-ROCK             9150     1.3      .1  1300*    20.4    12.2   167
 INDIAN CREEK             9425    38.5    15.3   252     38.3    32.4   118
 KELLEY R.S.              8180    17.4     1.9   916     33.5    26.1   128
 STEEL CREEK PARK        10200    29.2    12.3   237     33.1    23.1   143
                                                -----                  -----
                Basin wide percent of average    325*                   136


UPPER BEAR RIVER

 BUG LAKE                 7950    30.3     3.0  1010     41.7    25.1   166
 HAYDEN FORK              9212    16.7     1.6  1044*    42.8    28.4   151
 KELLEY R.S.              8180    17.4     1.9   916     33.5    26.1   128
 LILY LAKE                9156    22.0     1.6  1375     34.1    24.0   142
 MONTE CRISTO             8960    49.5    13.2   375     53.9    34.0   159
 SALT RIVER SUMMIT        7760     9.7      .0      *    29.6    24.0   123
 TRIAL LAKE               9992    51.1    15.1   338     47.9    33.2   144
                                                -----                  -----
                Basin wide percent of average    540                    146

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


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

Total Precipitation values

If the Basin wide percent of average 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 Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average 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.

Reference period for average conditions is 1971-2000.

Provisional data, subject to revision.