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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 THURSDAY: APRIL 28 , 2011
-----------------------------------------------------------------------------
BASIN                    ELEV.  SNOW WATER EQUIVALENT   TOTAL PRECIPITATION
 Data Site Name          (Ft)                      %                      %
                                Current  Average  Avg  Current  Average  Avg
-----------------------------------------------------------------------------

WYOMING


SNAKE RIVER  

 BASE CAMP                7030    26.5    13.3   199     30.7    24.1   127
 COTTONWOOD CREEK         7670    36.3    20.7   175     44.3    31.5   141
 GRAND TARGHEE            9260    61.1      -M      *    45.1      -M      *
 GRANITE CREEK            6770    26.1    13.8   189     29.6    22.1   134
 GRASSY LAKE              7265    48.9    34.4   142     50.9    40.5   126
 GROS VENTRE SUMMIT       8750    18.6    13.7   136     18.8    15.0   125
 GUNSIGHT PASS            9820    23.5      -M      *    21.6      -M      *
 LEWIS LAKE DIVIDE        7850    54.7    35.3   155     44.4    41.2   108
 PHILLIPS BENCH           8200    39.9    30.0   133     41.2    32.7   126
 SALT RIVER SUMMIT        7760    21.0    11.6   181     26.5    21.4   124
 SNAKE RIVER STATION      6920      -M    13.4      *    32.8    25.2   130
 SPRING CREEK DIVIDE      9000    44.0    28.8   153     39.8    29.9   133
 THUMB DIVIDE             7980    28.9    15.9   182     26.3    21.7   121
 TOGWOTEE PASS            9580    37.4    27.8   135     38.8    28.6   136
 TWO OCEAN PLATEAU        9240      -M    31.7      *      -M    31.7      *
 WILLOW CREEK             8380    47.5    31.2   152     51.4    37.1   139
                                                -----                  -----
                Basin wide percent of average    155                    128


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    32.5    25.9   125     31.0    23.2   134
 BLACK BEAR               8170    56.9    40.5   140     54.5    45.4   120
 CANYON                   7870    21.4    11.9   180     23.2    17.5   133
 FISHER CREEK             9100    50.6    37.8   134     47.9    41.4   116
 MADISON PLATEAU          7750    37.5    24.9   151     39.2    30.1   130
 NORTHEAST ENTRANCE       7350    17.1     7.8   219     19.3    14.6   132
 PARKER PEAK              9400    37.4    24.4   153     31.8    19.2   166
 SYLVAN LAKE              8420    32.6    24.0   136     36.1    24.3   149
 THUMB DIVIDE             7980    28.9    15.9   182     26.3    21.7   121
 TWO OCEAN PLATEAU        9240      -M    31.7      *      -M    31.7      *
 WHISKEY CREEK            6800    24.2    15.9   152     29.0    23.9   121
 WHITE MILL               8700    35.5    26.4   134     35.2    30.8   114
 WOLVERINE                7650    17.2     7.8   221     18.0    14.9   121
                                                -----                  -----
                Basin wide percent of average    149                    128


WIND RIVER

 BURROUGHS CREEK          8750    20.6    14.1   146     21.5    19.0   113
 CASTLE CREEK             8400     7.5      -M      *    10.4      -M      *
 COLD SPRINGS             9630     9.9     4.8   206     11.6    13.6    85
 DEER PARK                9700    22.0    19.1   115     25.6    26.5    97
 HOBBS PARK              10100    18.8    18.0   104     16.8    16.5   102
 LITTLE WARM              9370    15.5    11.5   135     16.3    16.4    99
 SOUTH PASS               9040    19.3    18.2   106     16.8    22.3    75
 ST. LAWRENCE ALT         8620     4.1     6.4    64      9.7    11.7    83
 TOGWOTEE PASS            9580    37.4    27.8   135     38.8    28.6   136
 TOWNSEND CREEK           8700     9.3     9.6    97     13.3    15.1    88
                                                -----                  -----
                Basin wide percent of average    121                    100


BIGHORN BASIN

 BALD MTN.                9380    30.3    23.4   129     24.7    20.9   118
 BEAR TRAP MEADOW         8200    11.1     2.8   396     11.8    10.6   111
 BLACKWATER               9780    36.3    28.4   128     34.2    24.3   141
 BONE SPRINGS DIV         9350    26.9    18.2   148     21.8    17.9   122
 EVENING STAR             9200    41.2    33.0   125     43.0    29.5   146
 GRAVE SPRINGS            8550    11.5    11.0   105     12.0    12.8    94
 KIRWIN                   9550    16.8    13.0   129     17.3    13.9   124
 MARQUETTE                8760     6.6      -M      *     9.8    13.3    74
 MIDDLE POWDER            7760    13.8    14.6    95     13.9    15.4    90
 OWL CREEK                8975     7.8     4.0   195      8.9     7.9   113
 POWDER RIVER PASS        9480    20.0    11.1   180     22.9    15.4   149
 SHELL CREEK              9580    23.1    16.8   138     20.9    16.4   127
 SYLVAN LAKE              8420    32.6    24.0   136     36.1    24.3   149
 SYLVAN ROAD              7120    18.2     8.9   204     26.7    20.2   132
 TIMBER CREEK             7950     6.6     4.9   135      8.0    10.1    79
 YOUNTS PEAK              8350    23.6    18.2   130     20.8    18.5   112
                                                -----                  -----
                Basin wide percent of average    138                    123


SHOSHONE RIVER

 BLACKWATER               9780    36.3    28.4   128     34.2    24.3   141
 EVENING STAR             9200    41.2    33.0   125     43.0    29.5   146
 KIRWIN                   9550    16.8    13.0   129     17.3    13.9   124
 MARQUETTE                8760     6.6      -M      *     9.8    13.3    74
 SYLVAN LAKE              8420    32.6    24.0   136     36.1    24.3   149
 SYLVAN ROAD              7120    18.2     8.9   204     26.7    20.2   132
 YOUNTS PEAK              8350    23.6    18.2   130     20.8    18.5   112
                                                -----                  -----
                Basin wide percent of average    134                    130


POWDER-TONGUE

 BEAR TRAP MEADOW         8200    11.1     2.8   396     11.8    10.6   111
 BIG GOOSE                7990    12.4    12.0   103     14.3    12.5   114
 BONE SPRINGS DIV         9350    26.9    18.2   148     21.8    17.9   122
 BURGESS JUNCTION         7880    14.8    13.4   110     15.6    15.1   103
 CLOUD PEAK RESERVOIR     9860    21.0    16.3   129     19.7    16.6   119
 DOME LAKE                8880    18.4    13.8   133     18.0    16.4   110
 GRAVE SPRINGS            8550    11.5    11.0   105     12.0    12.8    94
 HANSEN SAWMILL           8360    10.3     5.1   202     11.6    10.7   108
 LITTLE GOOSE             8870    14.6      -M      *    18.8      -M      *
 MIDDLE POWDER            7760    13.8    14.6    95     13.9    15.4    90
 POWDER RIVER PASS        9480    20.0    11.1   180     22.9    15.4   149
 SOLDIER PARK             8720    11.2      -M      *    12.3      -M      *
 SUCKER CREEK             8880    17.7    13.4   132     19.5    17.0   115
 TIE CREEK                6870     8.5     4.5   189     13.8    13.1   105
                                                -----                  -----
                Basin wide percent of average    137                    112


BELLE FOURCHE

 BLIND PARK               6890    11.2     4.8   233     21.0    13.8   152
 COLE CANYON              5910     8.8     5.6   157     15.7     9.1   173
 NORTH RAPID CREEK        6130     6.4     5.1   125     16.7    11.0   152
                                                -----                  -----
                Basin wide percent of average    170                    158


UPPER N. PLATTE RIVER

 CINNABAR PARK            9574    31.2    16.5   189     36.9    23.1   160
 COLUMBINE                9160    39.6    22.0   180     43.4    28.8   151
 DIVIDE PEAK              8880    31.2    20.0   156     36.1    23.9   151
 ELK RIVER                8700    30.1    16.2   186     33.6    22.7   148
 JOE WRIGHT              10120      -M    25.0      *    46.7    29.5   158
 NORTH FRENCH CREEK      10130      -M    34.3      *    61.5    29.1   211
 OLD BATTLE              10000    55.7    36.5   153     47.2    39.4   120
 SAGE CREEK BASIN         7850    19.7    11.6   170     23.7    13.9   171
 SOUTH BRUSH CREEK        8440    24.7    11.7   211     29.8    19.7   151
 TOWER                   10500    70.8    51.9   136     47.7    44.5   107
 WEBBER SPRINGS           9250    39.2    25.6   153     45.3    30.7   148
 WILLOW CREEK PASS        9540    26.1    14.3   183     24.0    15.4   156
                                                -----                  -----
                Basin wide percent of average    163                    148


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    41.5    28.3   147     38.0    26.5   143
 CASPER MTN.              7900    13.1    17.5    75     17.9    19.0    94
 DEADMAN HILL            10220    30.3    19.5   155     29.8    20.5   145
 DEER PARK                9700    22.0    19.1   115     25.6    26.5    97
 LAPRELE CREEK            8375    15.1     7.8   194     17.6    16.0   110
 RENO HILL                8400    18.3    15.3   120     21.7    19.7   110
 ROACH                    9700    27.8    18.7   149     30.8    22.0   140
 SAND LAKE               10050    48.5    36.8   132       -M    28.8      *
 SOUTH PASS               9040    19.3    18.2   106     16.8    22.3    75
 WINDY PEAK               7900    10.4     5.7   182     16.4    13.2   124
                                                -----                  -----
                Basin wide percent of average    132                    116


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M     5.4      *    21.2    18.3   116
 DIVIDE PEAK              8880    31.2    20.0   156     36.1    23.9   151
 OLD BATTLE              10000    55.7    36.5   153     47.2    39.4   120
 SANDSTONE RS             8150    22.8    10.5   217     33.0    21.6   153
 WHISKEY PARK             8950      -M    30.7      *    47.5    33.3   143
                                                -----                  -----
                Basin wide percent of average    164                    136


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    19.4    14.1   138     19.3    15.6   124
 BLIND BULL SUM           8650    43.1    28.2   153     28.7    24.9   115
 EAST RIM DIVIDE          7930    17.2    13.6   126     16.6    13.7   121
 ELKHART PARK G.S.        9400    17.6    13.3   132     17.2    15.7   110
 GROS VENTRE SUMMIT       8750    18.6    13.7   136     18.8    15.0   125
 GUNSIGHT PASS            9820    23.5      -M      *    21.6      -M      *
 KENDALL R.S.             7740    15.1    10.9   139     19.6    16.4   120
 LOOMIS PARK              8240    25.3    15.0   169     26.4    19.7   134
 NEW FORK LAKE            8340    15.2     9.2   165     14.0    13.2   106
 POCKET CREEK             9360    17.0      -M      *    18.5      -M      *
 SNIDER BASIN             8060    24.2    13.3   182     22.9    18.3   125
 SPRING CREEK DIVIDE      9000    44.0    28.8   153     39.8    29.9   133
 TRIPLE PEAK              8500    41.8    24.5   171     42.1    28.3   149
                                                -----                  -----
                Basin wide percent of average    152                    126


LOWER GREEN RIVER

 HAMS FORK                7840    18.2     6.9   264     18.8    14.5   130
 HEWINTA                  9519    17.2    10.1   170     22.1    17.5   126
 HICKERSON PARK           9145     5.1     6.4    80     12.5    10.0   125
 HOLE-IN-ROCK             9150     9.1     5.4   169     14.2     9.5   149
 INDIAN CREEK             9425    39.9    28.9   138     33.0    29.1   113
 KELLEY R.S.              8180    26.1    14.9   175     29.2    23.3   125
 STEEL CREEK PARK        10200    23.6    18.4   128     25.7    19.9   129
                                                -----                  -----
                Basin wide percent of average    153                    126


UPPER BEAR RIVER

 BUG LAKE                 7950      -M    19.1      *      -M    22.1      *
 HAYDEN FORK              9212      -M    13.9      *    36.9    24.8   149
 KELLEY R.S.              8180    26.1    14.9   175     29.2    23.3   125
 LILY LAKE                9156    26.4    12.0   220     28.0    20.8   135
 MONTE CRISTO             8960    48.1    29.0   166     45.9    29.8   154
 SALT RIVER SUMMIT        7760    21.0    11.6   181     26.5    21.4   124
 TRIAL LAKE               9992    46.0    26.6   173     41.7    29.0   144
                                                -----                  -----
                Basin wide percent of average    178                    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.