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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 SATURDAY: MAY 7 , 2011
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    23.5    10.0   235     31.0    24.9   124
 COTTONWOOD CREEK         7670    36.0    17.5   206     45.4    32.8   138
 GRAND TARGHEE            9260    62.8      -M      *    46.1      -M      *
 GRANITE CREEK            6770    24.1    10.8   223     29.9    22.9   131
 GRASSY LAKE              7265    47.9    30.8   156     51.7    41.8   124
 GROS VENTRE SUMMIT       8750    18.2    12.1   150     19.4    15.7   124
 GUNSIGHT PASS            9820    24.0      -M      *    22.1      -M      *
 LEWIS LAKE DIVIDE        7850    55.2    32.6   169     46.4    42.4   109
 PHILLIPS BENCH           8200    41.7    27.6   151     42.0    33.8   124
 SALT RIVER SUMMIT        7760    19.6     8.4   233     26.9    22.1   122
 SNAKE RIVER STATION      6920      -M     9.6      *    33.2    26.1   127
 SPRING CREEK DIVIDE      9000    44.2    27.4   161     40.5    30.8   131
 THUMB DIVIDE             7980    27.9    12.9   216     27.0    22.6   119
 TOGWOTEE PASS            9580    37.9    28.1   135     39.6    29.8   133
 TWO OCEAN PLATEAU        9240      -M    31.6      *      -M    33.0      *
 WILLOW CREEK             8380    48.6    28.8   169     52.9    38.8   136
                                                -----                  -----
                Basin wide percent of average    172                    126


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    33.4    25.9   129     32.2    24.3   133
 BLACK BEAR               8170      -M    38.8      *    55.8    46.8   119
 CANYON                   7870    20.6     9.5   217     23.6    18.2   130
 FISHER CREEK             9100    51.3    37.7   136     50.2    42.9   117
 MADISON PLATEAU          7750    37.2    22.4   166     39.8    31.1   128
 NORTHEAST ENTRANCE       7350    14.6     5.6   261     19.7    15.3   129
 PARKER PEAK              9400    38.3    24.5   156       -M    20.2      *
 SYLVAN LAKE              8420    32.7    22.6   145     36.8    25.5   144
 THUMB DIVIDE             7980    27.9    12.9   216     27.0    22.6   119
 TWO OCEAN PLATEAU        9240      -M    31.6      *      -M    33.0      *
 WHISKEY CREEK            6800    23.8    13.1   182     29.2    24.8   118
 WHITE MILL               8700    36.0    26.0   138     35.9    32.0   112
 WOLVERINE                7650    15.8     5.7   277     18.8    15.8   119
                                                -----                  -----
                Basin wide percent of average    161                    123


WIND RIVER

 BURROUGHS CREEK          8750    20.3    12.0   169     21.8    20.0   109
 CASTLE CREEK             8400     4.2      -M      *    10.7      -M      *
 COLD SPRINGS             9630     7.3     4.6   159     11.8    14.6    81
 DEER PARK                9700    22.0    16.8   131     26.4    27.7    95
 HOBBS PARK              10100    18.8    17.5   107     17.4    17.8    98
 LITTLE WARM              9370    14.6     9.6   152     16.7    17.5    95
 SOUTH PASS               9040    18.6    16.6   112     17.4    23.5    74
 ST. LAWRENCE ALT         8620     1.2     5.2    23      9.9    12.8    77
 TOGWOTEE PASS            9580    37.9    28.1   135     39.6    29.8   133
 TOWNSEND CREEK           8700     8.4     7.6   111     13.8    16.3    85
                                                -----                  -----
                Basin wide percent of average    126                     97


BIGHORN BASIN

 BALD MTN.                9380    32.4    23.5   138     26.3    22.2   118
 BEAR TRAP MEADOW         8200    10.6     1.7   624     12.7    11.6   109
 BLACKWATER               9780    37.0    28.7   129     35.0    25.5   137
 BONE SPRINGS DIV         9350    28.2    17.5   161     22.9    19.2   119
 EVENING STAR             9200    41.4    33.3   124     44.5    30.8   144
 GRAVE SPRINGS            8550    12.1     9.8   123     12.8    13.9    92
 KIRWIN                   9550    16.3    12.5   130     17.8    14.9   119
 MARQUETTE                8760     7.4      -M      *    10.4    14.6    71
 MIDDLE POWDER            7760    14.7    13.1   112     14.6    16.5    88
 OWL CREEK                8975     5.4     3.4   159      9.2     8.8   105
 POWDER RIVER PASS        9480    20.6     9.5   217     24.2    16.6   146
 SHELL CREEK              9580    24.3    16.8   145     22.1    17.6   126
 SYLVAN LAKE              8420    32.7    22.6   145     36.8    25.5   144
 SYLVAN ROAD              7120    13.2     6.0   220     27.0    21.1   128
 TIMBER CREEK             7950     4.4     3.9   113      8.2    11.3    73
 YOUNTS PEAK              8350    23.5    17.5   134     20.9    19.4   108
                                                -----                  -----
                Basin wide percent of average    144                    119


SHOSHONE RIVER

 BLACKWATER               9780    37.0    28.7   129     35.0    25.5   137
 EVENING STAR             9200    41.4    33.3   124     44.5    30.8   144
 KIRWIN                   9550    16.3    12.5   130     17.8    14.9   119
 MARQUETTE                8760     7.4      -M      *    10.4    14.6    71
 SYLVAN LAKE              8420    32.7    22.6   145     36.8    25.5   144
 SYLVAN ROAD              7120    13.2     6.0   220     27.0    21.1   128
 YOUNTS PEAK              8350    23.5    17.5   134     20.9    19.4   108
                                                -----                  -----
                Basin wide percent of average    136                    127


POWDER-TONGUE

 BEAR TRAP MEADOW         8200    10.6     1.7   624     12.7    11.6   109
 BIG GOOSE                7990    13.0    10.6   123     15.6    13.8   113
 BONE SPRINGS DIV         9350    28.2    17.5   161     22.9    19.2   119
 BURGESS JUNCTION         7880    15.9    12.2   130     17.0    16.1   106
 CLOUD PEAK RESERVOIR     9860    22.2    15.7   141     21.2    18.1   117
 DOME LAKE                8880    19.5    12.1   161     19.3    17.7   109
 GRAVE SPRINGS            8550    12.1     9.8   123     12.8    13.9    92
 HANSEN SAWMILL           8360    10.1     3.9   259     12.1    11.6   104
 LITTLE GOOSE             8870    15.5      -M      *    20.0      -M      *
 MIDDLE POWDER            7760    14.7    13.1   112     14.6    16.5    88
 POWDER RIVER PASS        9480    20.6     9.5   217     24.2    16.6   146
 SOLDIER PARK             8720    11.6      -M      *    13.2      -M      *
 SUCKER CREEK             8880    19.1    11.8   162     21.3    18.4   116
 TIE CREEK                6870     8.1     2.8   289     14.8    14.3   103
                                                -----                  -----
                Basin wide percent of average    161                    111


BELLE FOURCHE

 BLIND PARK               6890     9.2     2.7   341     21.8    14.9   146
 COLE CANYON              5910     7.8     2.5   312     16.7    10.3   162
 NORTH RAPID CREEK        6130     3.9     1.9   205     17.3    12.0   144
                                                -----                  -----
                Basin wide percent of average    294                    150


UPPER N. PLATTE RIVER

 CINNABAR PARK            9574    31.4    14.5   217     42.6    24.4   175
 COLUMBINE                9160    39.6    18.1   219     44.6    29.9   149
 DIVIDE PEAK              8880    32.6    17.0   192     37.2    25.0   149
 ELK RIVER                8700    29.2    12.0   243     34.4    23.7   145
 JOE WRIGHT              10120    49.0    25.0   196     48.5    31.1   156
 NORTH FRENCH CREEK      10130    63.9    34.4   186     59.8    30.8   194
 OLD BATTLE              10000    57.6    37.2   155     47.5    40.9   116
 SAGE CREEK BASIN         7850    15.0     9.9   152     24.2    14.5   167
 SOUTH BRUSH CREEK        8440    24.1     9.3   259     30.9    20.9   148
 TOWER                   10500    73.6    52.4   140       -M    46.4      *
 WEBBER SPRINGS           9250    40.1    22.8   176     46.6    32.0   146
 WILLOW CREEK PASS        9540    27.0    13.5   200     25.1    16.3   154
                                                -----                  -----
                Basin wide percent of average    182                    152


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    42.4    26.9   158     41.6    28.0   149
 CASPER MTN.              7900    13.3    15.3    87     18.8    20.6    91
 DEADMAN HILL            10220    31.7    19.5   163     31.1    21.8   143
 DEER PARK                9700    22.0    16.8   131     26.4    27.7    95
 LAPRELE CREEK            8375    13.5     5.6   241     18.3    17.3   106
 RENO HILL                8400    18.4    12.9   143     22.9    21.3   108
 ROACH                    9700    28.5    16.9   169     31.6    23.3   136
 SAND LAKE               10050    50.4    36.9   137     43.8    30.5   144
 SOUTH PASS               9040    18.6    16.6   112     17.4    23.5    74
 WINDY PEAK               7900     8.6     3.5   246     17.1    14.2   120
                                                -----                  -----
                Basin wide percent of average    145                    118


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M     2.9      *    22.3    19.1   117
 DIVIDE PEAK              8880    32.6    17.0   192     37.2    25.0   149
 OLD BATTLE              10000    57.6    37.2   155     47.5    40.9   116
 SANDSTONE RS             8150    22.4     7.0   320     34.0    22.6   150
 WHISKEY PARK             8950      -M    29.5      *    54.0    34.9   155
                                                -----                  -----
                Basin wide percent of average    184                    137


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    17.8    11.9   150     19.9    16.5   121
 BLIND BULL SUM           8650    44.3    26.9   165     29.0    25.8   112
 EAST RIM DIVIDE          7930    14.3    11.8   121     16.9    14.3   118
 ELKHART PARK G.S.        9400    17.4    11.6   150     17.6    16.6   106
 GROS VENTRE SUMMIT       8750    18.2    12.1   150     19.4    15.7   124
 GUNSIGHT PASS            9820    24.0      -M      *    22.1      -M      *
 KENDALL R.S.             7740    12.7     7.6   167     19.7    17.0   116
 LOOMIS PARK              8240    23.6    12.5   189     26.8    20.5   131
 NEW FORK LAKE            8340    13.3     6.6   202     14.3    13.9   103
 POCKET CREEK             9360    16.9      -M      *    18.7      -M      *
 SNIDER BASIN             8060    21.9    10.8   203     23.3    18.9   123
 SPRING CREEK DIVIDE      9000    44.2    27.4   161     40.5    30.8   131
 TRIPLE PEAK              8500    41.3    21.4   193     43.0    29.4   146
                                                -----                  -----
                Basin wide percent of average    167                    123


LOWER GREEN RIVER

 HAMS FORK                7840    14.2     4.0   355     19.2    15.3   125
 HEWINTA                  9519    16.6     7.3   227     23.5    18.4   128
 HICKERSON PARK           9145     2.4     4.1    59     13.3    10.7   124
 HOLE-IN-ROCK             9150     7.9     3.4   232     15.0    10.2   147
 INDIAN CREEK             9425    40.2    26.7   151     33.8    30.1   112
 KELLEY R.S.              8180    24.2    12.2   198     29.9    24.1   124
 STEEL CREEK PARK        10200    25.4    18.9   134     27.3    20.9   131
                                                -----                  -----
                Basin wide percent of average    171                    125


UPPER BEAR RIVER

 BUG LAKE                 7950    36.3    15.2   239     36.4    23.0   158
 HAYDEN FORK              9212    28.5    10.7   266     38.1    25.9   147
 KELLEY R.S.              8180    24.2    12.2   198     29.9    24.1   124
 LILY LAKE                9156    26.8     9.2   291     29.1    21.8   133
 MONTE CRISTO             8960    49.9    26.3   190     47.0    31.2   151
 SALT RIVER SUMMIT        7760    19.6     8.4   233     26.9    22.1   122
 TRIAL LAKE               9992      -M    25.7      *    42.7    30.3   141
                                                -----                  -----
                Basin wide percent of average    226                    140

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


 -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.