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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 WEDNESDAY: APRIL 27 , 2011
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    26.1    13.6   192     30.7    24.0   128
 COTTONWOOD CREEK         7670    36.5    21.1   173     44.3    31.4   141
 GRAND TARGHEE            9260    61.0      -M      *    45.1      -M      *
 GRANITE CREEK            6770    26.1    14.1   185     29.6    22.1   134
 GRASSY LAKE              7265    48.9    34.7   141     50.9    40.3   126
 GROS VENTRE SUMMIT       8750    18.4    13.8   133     18.7    15.0   125
 GUNSIGHT PASS            9820    23.4      -M      *    21.6      -M      *
 LEWIS LAKE DIVIDE        7850    54.5    35.5   154     44.4    41.1   108
 PHILLIPS BENCH           8200    39.9    30.1   133     41.2    32.6   126
 SALT RIVER SUMMIT        7760    20.8    11.9   175     26.4    21.3   124
 SNAKE RIVER STATION      6920      -M    13.8      *    32.9    25.2   131
 SPRING CREEK DIVIDE      9000    43.9    28.8   152     39.8    29.8   134
 THUMB DIVIDE             7980    28.9    16.1   180     26.3    21.6   122
 TOGWOTEE PASS            9580    37.3    27.7   135     38.7    28.4   136
 TWO OCEAN PLATEAU        9240      -M    31.7      *      -M    31.5      *
 WILLOW CREEK             8380    47.5    31.4   151     51.4    37.0   139
                                                -----                  -----
                Basin wide percent of average    154                    129


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    32.3    25.8   125     31.0    23.0   135
 BLACK BEAR               8170    56.8    40.5   140     54.5    45.2   121
 CANYON                   7870    21.5    12.0   179     23.1    17.4   133
 FISHER CREEK             9100    50.6    37.8   134     47.9    41.2   116
 MADISON PLATEAU          7750    37.4    25.1   149     39.2    30.0   131
 NORTHEAST ENTRANCE       7350    17.2     8.0   215     19.3    14.5   133
 PARKER PEAK              9400    37.4    24.4   153     31.8    19.1   166
 SYLVAN LAKE              8420    32.5    24.1   135     36.1    24.2   149
 THUMB DIVIDE             7980    28.9    16.1   180     26.3    21.6   122
 TWO OCEAN PLATEAU        9240      -M    31.7      *      -M    31.5      *
 WHISKEY CREEK            6800    24.2    16.1   150     29.0    23.8   122
 WHITE MILL               8700    35.5    26.4   134     35.1    30.6   115
 WOLVERINE                7650    17.3     8.1   214     17.9    14.9   120
                                                -----                  -----
                Basin wide percent of average    148                    128


WIND RIVER

 BURROUGHS CREEK          8750    20.6    14.3   144     21.5    18.9   114
 CASTLE CREEK             8400     7.7      -M      *    10.4      -M      *
 COLD SPRINGS             9630    10.1     4.9   206     11.6    13.4    87
 DEER PARK                9700    21.9    19.5   112     25.6    26.3    97
 HOBBS PARK              10100    18.7    18.0   104     16.7    16.3   102
 LITTLE WARM              9370    15.5    11.7   132     16.2    16.3    99
 SOUTH PASS               9040    19.0    18.2   104     16.8    22.1    76
 ST. LAWRENCE ALT         8620     4.2     6.5    65      9.6    11.6    83
 TOGWOTEE PASS            9580    37.3    27.7   135     38.7    28.4   136
 TOWNSEND CREEK           8700     9.3     9.7    96     13.2    15.0    88
                                                -----                  -----
                Basin wide percent of average    120                    101


BIGHORN BASIN

 BALD MTN.                9380    30.2    23.3   130     24.6    20.7   119
 BEAR TRAP MEADOW         8200    11.0     2.9   379     11.8    10.5   112
 BLACKWATER               9780    36.2    28.3   128     34.2    24.2   141
 BONE SPRINGS DIV         9350    26.8    18.2   147     21.8    17.8   122
 EVENING STAR             9200    40.7    32.9   124     42.5    29.3   145
 GRAVE SPRINGS            8550    11.3    11.1   102     11.8    12.7    93
 KIRWIN                   9550    16.7    12.9   129     17.3    13.8   125
 MARQUETTE                8760     6.6      -M      *     9.8    13.1    75
 MIDDLE POWDER            7760    13.3    14.6    91     13.3    15.3    87
 OWL CREEK                8975     7.5     4.1   183      8.8     7.9   111
 POWDER RIVER PASS        9480    19.8    11.1   178     22.9    15.3   150
 SHELL CREEK              9580    23.0    16.7   138     20.7    16.3   127
 SYLVAN LAKE              8420    32.5    24.1   135     36.1    24.2   149
 SYLVAN ROAD              7120    18.0     9.2   196     26.7    20.1   133
 TIMBER CREEK             7950     6.3     5.1   124      8.0    10.0    80
 YOUNTS PEAK              8350    23.3    18.2   128     20.6    18.5   111
                                                -----                  -----
                Basin wide percent of average    136                    123


SHOSHONE RIVER

 BLACKWATER               9780    36.2    28.3   128     34.2    24.2   141
 EVENING STAR             9200    40.7    32.9   124     42.5    29.3   145
 KIRWIN                   9550    16.7    12.9   129     17.3    13.8   125
 MARQUETTE                8760     6.6      -M      *     9.8    13.1    75
 SYLVAN LAKE              8420    32.5    24.1   135     36.1    24.2   149
 SYLVAN ROAD              7120    18.0     9.2   196     26.7    20.1   133
 YOUNTS PEAK              8350    23.3    18.2   128     20.6    18.5   111
                                                -----                  -----
                Basin wide percent of average    133                    131


POWDER-TONGUE

 BEAR TRAP MEADOW         8200    11.0     2.9   379     11.8    10.5   112
 BIG GOOSE                7990    12.3    12.1   102     14.3    12.4   115
 BONE SPRINGS DIV         9350    26.8    18.2   147     21.8    17.8   122
 BURGESS JUNCTION         7880    14.8    13.5   110     15.6    15.0   104
 CLOUD PEAK RESERVOIR     9860    20.8    16.3   128     19.5    16.5   118
 DOME LAKE                8880    18.3    13.8   133     17.8    16.3   109
 GRAVE SPRINGS            8550    11.3    11.1   102     11.8    12.7    93
 HANSEN SAWMILL           8360    10.1     5.2   194     11.5    10.6   108
 LITTLE GOOSE             8870    14.5      -M      *    18.7      -M      *
 MIDDLE POWDER            7760    13.3    14.6    91     13.3    15.3    87
 POWDER RIVER PASS        9480    19.8    11.1   178     22.9    15.3   150
 SOLDIER PARK             8720    11.1      -M      *    12.2      -M      *
 SUCKER CREEK             8880    17.6    13.5   130     19.4    16.8   115
 TIE CREEK                6870     8.5     4.8   177     13.7    13.0   105
                                                -----                  -----
                Basin wide percent of average    135                    112


BELLE FOURCHE

 BLIND PARK               6890    10.9     5.2   210     20.7    13.7   151
 COLE CANYON              5910     8.6     5.8   148     15.5     9.0   172
 NORTH RAPID CREEK        6130     6.4     5.6   114     16.6    10.9   152
                                                -----                  -----
                Basin wide percent of average    156                    157


UPPER N. PLATTE RIVER

 CINNABAR PARK            9574    31.3    16.6   189     36.9    23.0   160
 COLUMBINE                9160    39.7    22.3   178     43.2    28.7   151
 DIVIDE PEAK              8880    31.1    20.2   154     36.0    23.8   151
 ELK RIVER                8700    29.9    16.6   180     33.5    22.6   148
 JOE WRIGHT              10120    46.1    24.9   185     46.6    29.4   159
 NORTH FRENCH CREEK      10130      -M    34.3      *    61.5    28.9   213
 OLD BATTLE              10000    55.5    36.4   152     47.2    39.2   120
 SAGE CREEK BASIN         7850    19.7    11.7   168     23.7    13.8   172
 SOUTH BRUSH CREEK        8440    24.5    11.9   206     29.6    19.6   151
 TOWER                   10500    70.6    51.8   136     47.7    44.3   108
 WEBBER SPRINGS           9250    39.0    25.8   151     45.2    30.6   148
 WILLOW CREEK PASS        9540    26.3    14.3   184     23.9    15.3   156
                                                -----                  -----
                Basin wide percent of average    164                    149


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    41.7    28.2   148     38.0    26.3   144
 CASPER MTN.              7900    12.7    17.5    73     17.7    18.8    94
 DEADMAN HILL            10220    30.2    19.5   155     29.7    20.4   146
 DEER PARK                9700    21.9    19.5   112     25.6    26.3    97
 LAPRELE CREEK            8375    14.6     8.1   180     17.6    15.9   111
 RENO HILL                8400    18.0    15.5   116     21.5    19.5   110
 ROACH                    9700    27.6    18.7   148     30.8    21.9   141
 SAND LAKE               10050    48.4    36.7   132       -M    28.6      *
 SOUTH PASS               9040    19.0    18.2   104     16.8    22.1    76
 WINDY PEAK               7900    10.5     5.9   178     16.4    13.1   125
                                                -----                  -----
                Basin wide percent of average    130                    116


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M     5.7      *    21.2    18.2   116
 DIVIDE PEAK              8880    31.1    20.2   154     36.0    23.8   151
 OLD BATTLE              10000    55.5    36.4   152     47.2    39.2   120
 SANDSTONE RS             8150    22.8    10.8   211     33.0    21.4   154
 WHISKEY PARK             8950      -M    30.7      *    47.2    33.1   143
                                                -----                  -----
                Basin wide percent of average    162                    136


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    19.3    14.3   135     19.3    15.5   125
 BLIND BULL SUM           8650    42.9    28.3   152     28.7    24.8   116
 EAST RIM DIVIDE          7930    17.4    13.7   127     16.6    13.6   122
 ELKHART PARK G.S.        9400    17.4    13.4   130     17.2    15.6   110
 GROS VENTRE SUMMIT       8750    18.4    13.8   133     18.7    15.0   125
 GUNSIGHT PASS            9820    23.4      -M      *    21.6      -M      *
 KENDALL R.S.             7740    15.3    11.2   137     19.5    16.3   120
 LOOMIS PARK              8240    25.3    15.2   166     26.4    19.6   135
 NEW FORK LAKE            8340    15.1     9.4   161     14.0    13.1   107
 POCKET CREEK             9360    16.9      -M      *    18.4      -M      *
 SNIDER BASIN             8060    24.3    13.5   180     22.9    18.3   125
 SPRING CREEK DIVIDE      9000    43.9    28.8   152     39.8    29.8   134
 TRIPLE PEAK              8500    41.7    24.8   168     42.1    28.2   149
                                                -----                  -----
                Basin wide percent of average    151                    126


LOWER GREEN RIVER

 HAMS FORK                7840    17.4     7.1   245     18.7    14.4   130
 HEWINTA                  9519    16.7    10.3   162     22.1    17.4   127
 HICKERSON PARK           9145     5.2     6.6    79     12.5     9.9   126
 HOLE-IN-ROCK             9150     9.1     5.6   163     14.2     9.4   151
 INDIAN CREEK             9425    39.5    29.0   136     33.0    29.0   114
 KELLEY R.S.              8180    25.9    15.2   170     29.1    23.2   125
 STEEL CREEK PARK        10200    23.6    18.3   129     25.8    19.8   130
                                                -----                  -----
                Basin wide percent of average    149                    126


UPPER BEAR RIVER

 BUG LAKE                 7950    36.4    19.4   188     35.8    22.0   163
 HAYDEN FORK              9212      -M    14.2      *    36.9    24.6   150
 KELLEY R.S.              8180    25.9    15.2   170     29.1    23.2   125
 LILY LAKE                9156    26.6    12.3   216     27.9    20.7   135
 MONTE CRISTO             8960    48.2    29.2   165     45.8    29.7   154
 SALT RIVER SUMMIT        7760    20.8    11.9   175     26.4    21.3   124
 TRIAL LAKE               9992    45.8    26.6   172     41.0    28.9   142
                                                -----                  -----
                Basin wide percent of average    178                    143

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


 -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.