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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: MARCH 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    22.3    18.1   123     24.1    21.6   112
 COTTONWOOD CREEK         7670    28.9    24.1   120     35.8    27.6   130
 GRAND TARGHEE            9260    48.6      -M      *      -M      -M      *
 GRANITE CREEK            6770    22.9    18.7   122     23.9    20.1   119
 GRASSY LAKE              7265    40.6    36.0   113     41.5    36.2   115
 GROS VENTRE SUMMIT       8750    14.8    14.3   103     14.4    13.0   111
 GUNSIGHT PASS            9820    18.1      -M      *    17.3      -M      *
 LEWIS LAKE DIVIDE        7850    41.6    35.7   117       -M    37.0      *
 PHILLIPS BENCH           8200    33.6    29.1   115     33.0    29.2   113
 SALT RIVER SUMMIT        7760    18.2    14.6   125     22.3    18.9   118
 SNAKE RIVER STATION      6920      -M    19.2      *    26.7    22.4   119
 SPRING CREEK DIVIDE      9000    36.1    26.8   135     33.2    26.6   125
 THUMB DIVIDE             7980    22.5    19.2   117     20.5    19.0   108
 TOGWOTEE PASS            9580    29.2    25.0   117     30.7    24.7   124
 TWO OCEAN PLATEAU        9240      -M    28.2      *      -M    27.9      *
 WILLOW CREEK             8380    37.4    30.5   123     41.3    32.4   127
                                                -----                  -----
                Basin wide percent of average    119                    119


UPPER YELLOWSTONE-MADISON

 BEARTOOTH LAKE           9360    26.8    23.5   114     25.6    20.2   127
 BLACK BEAR               8170    48.4    39.6   122     44.4    40.7   109
 CANYON                   7870    17.5    13.9   126     18.7    15.5   121
 FISHER CREEK             9100    42.1    35.3   119     40.2    36.6   110
 MADISON PLATEAU          7750    30.5    25.4   120     32.0    26.9   119
 NORTHEAST ENTRANCE       7350    14.7    11.3   130     15.8    12.7   124
 PARKER PEAK              9400    29.5    21.8   135     25.6    16.3   157
 SYLVAN LAKE              8420    25.2    22.7   111     28.7    21.0   137
 THUMB DIVIDE             7980    22.5    19.2   117     20.5    19.0   108
 TWO OCEAN PLATEAU        9240      -M    28.2      *      -M    27.9      *
 WHISKEY CREEK            6800    21.2    17.4   122     24.0    21.1   114
 WHITE MILL               8700    28.9    24.5   118     29.1    27.2   107
 WOLVERINE                7650    15.0    11.6   129     14.6    12.8   114
                                                -----                  -----
                Basin wide percent of average    121                    118


WIND RIVER

 BURROUGHS CREEK          8750    15.4    14.8   104     16.1    16.3    99
 CASTLE CREEK             8400     7.0      -M      *     8.0      -M      *
 COLD SPRINGS             9630     8.6     9.0    96      8.4    10.6    79
 DEER PARK                9700    19.1    17.0   112     22.1    21.9   101
 HOBBS PARK              10100    14.6    15.0    97     12.9    12.8   101
 LITTLE WARM              9370    12.7    12.0   106     12.8    13.4    96
 SOUTH PASS               9040    17.5    16.7   105     15.1    18.5    82
 ST. LAWRENCE ALT         8620     5.0     7.4    68      7.0     8.8    80
 TOGWOTEE PASS            9580    29.2    25.0   117     30.7    24.7   124
 TOWNSEND CREEK           8700     8.9     8.7   102     11.2    11.6    97
                                                -----                  -----
                Basin wide percent of average    104                     98


BIGHORN BASIN

 BALD MTN.                9380    23.1    19.7   117     18.8    17.4   108
 BEAR TRAP MEADOW         8200     8.5     5.2   163      8.0     8.2    98
 BLACKWATER               9780    26.4    24.8   106     25.4    20.6   123
 BONE SPRINGS DIV         9350    19.6    16.3   120     16.2    14.6   111
 EVENING STAR             9200    32.1    30.0   107     34.2    25.4   135
 GRAVE SPRINGS            8550     9.2     9.4    98      9.1     9.6    95
 KIRWIN                   9550    11.7    11.4   103     12.9    11.2   115
 MARQUETTE                8760     3.1      -M      *     6.2     9.7    64
 MIDDLE POWDER            7760    10.6    11.8    90     11.3    12.3    92
 OWL CREEK                8975     5.9     5.6   105      6.0     5.8   103
 POWDER RIVER PASS        9480    14.2    10.9   130     16.5    12.3   134
 SHELL CREEK              9580    17.1    14.8   116     15.5    13.3   117
 SYLVAN LAKE              8420    25.2    22.7   111     28.7    21.0   137
 SYLVAN ROAD              7120    16.5    12.9   128     21.0    17.7   119
 TIMBER CREEK             7950     4.3     5.8    74      5.1     7.3    70
 YOUNTS PEAK              8350    17.8    17.2   103     15.5    16.2    96
                                                -----                  -----
                Basin wide percent of average    111                    112


SHOSHONE RIVER

 BLACKWATER               9780    26.4    24.8   106     25.4    20.6   123
 EVENING STAR             9200    32.1    30.0   107     34.2    25.4   135
 KIRWIN                   9550    11.7    11.4   103     12.9    11.2   115
 MARQUETTE                8760     3.1      -M      *     6.2     9.7    64
 SYLVAN LAKE              8420    25.2    22.7   111     28.7    21.0   137
 SYLVAN ROAD              7120    16.5    12.9   128     21.0    17.7   119
 YOUNTS PEAK              8350    17.8    17.2   103     15.5    16.2    96
                                                -----                  -----
                Basin wide percent of average    109                    118


POWDER-TONGUE

 BEAR TRAP MEADOW         8200     8.5     5.2   163      8.0     8.2    98
 BIG GOOSE                7990     8.6    10.6    81     10.3     8.4   123
 BONE SPRINGS DIV         9350    19.6    16.3   120     16.2    14.6   111
 BURGESS JUNCTION         7880    10.7    11.7    91     11.6    12.1    96
 CLOUD PEAK RESERVOIR     9860    15.7    13.4   117     14.4    12.8   113
 DOME LAKE                8880    13.7    12.4   110     13.2    13.1   101
 GRAVE SPRINGS            8550     9.2     9.4    98      9.1     9.6    95
 HANSEN SAWMILL           8360     7.2     6.4   113      7.9     8.1    98
 LITTLE GOOSE             8870     9.7      -M      *    14.0      -M      *
 MIDDLE POWDER            7760    10.6    11.8    90     11.3    12.3    92
 POWDER RIVER PASS        9480    14.2    10.9   130     16.5    12.3   134
 SOLDIER PARK             8720     8.2      -M      *     9.1      -M      *
 SUCKER CREEK             8880    13.3    11.8   113     14.6    13.5   108
 TIE CREEK                6870     7.0     5.9   119     10.2     9.8   104
                                                -----                  -----
                Basin wide percent of average    110                    106


BELLE FOURCHE

 BLIND PARK               6890     9.8     8.7   113     16.6    11.0   151
 COLE CANYON              5910     8.0     6.8   118     11.9     6.7   178
 NORTH RAPID CREEK        6130     8.6     8.2   105     13.9     8.6   162
                                                -----                  -----
                Basin wide percent of average    111                    161


UPPER N. PLATTE RIVER

 CINNABAR PARK            9574    25.6    17.8   144     32.9    20.0   165
 COLUMBINE                9160    34.7    25.0   139     35.8    25.2   142
 DIVIDE PEAK              8880    24.8    19.9   125     27.9    20.7   135
 ELK RIVER                8700    26.4    19.5   135     27.2    19.6   139
 JOE WRIGHT              10120    32.8    21.3   154     34.7    24.7   140
 NORTH FRENCH CREEK      10130    46.0    29.3   157       -M    24.6      *
 OLD BATTLE              10000    43.4    32.3   134     29.5    34.6    85
 SAGE CREEK BASIN         7850    21.6    11.5   188     19.0    12.0   158
 SOUTH BRUSH CREEK        8440    19.0    13.1   145     22.2    16.3   136
 TOWER                   10500    56.0    45.6   123     46.2    38.4   120
 WEBBER SPRINGS           9250    31.9    26.3   121     36.5    26.7   137
 WILLOW CREEK PASS        9540    19.6    12.0   163     17.8    12.8   139
                                                -----                  -----
                Basin wide percent of average    140                    131


LOWER N. PLATTE - SWEETWATER - LARAMIE

 BROOKLYN LAKE           10240    32.3    23.7   136     30.7    22.0   140
 CASPER MTN.              7900    11.1    14.4    77     13.8    14.3    97
 DEADMAN HILL            10220    22.0    16.3   135     22.2    16.8   132
 DEER PARK                9700    19.1    17.0   112     22.1    21.9   101
 LAPRELE CREEK            8375    13.2    10.9   121     14.1    12.5   113
 RENO HILL                8400    14.4    14.2   101     16.9    14.8   114
 ROACH                    9700    21.2    17.0   125     24.3    18.6   131
 SAND LAKE               10050    37.9    32.5   117     35.0    24.0   146
 SOUTH PASS               9040    17.5    16.7   105     15.1    18.5    82
 WINDY PEAK               7900    10.7     8.1   132     13.1    10.5   125
                                                -----                  -----
                Basin wide percent of average    117                    119


LITTLE SNAKE RIVER

 BATTLE MOUNTAIN          7440      -M    11.1      *    15.0    15.8    95
 DIVIDE PEAK              8880    24.8    19.9   125     27.9    20.7   135
 OLD BATTLE              10000    43.4    32.3   134     29.5    34.6    85
 SANDSTONE RS             8150    18.4    14.9   123     26.2    18.7   140
 WHISKEY PARK             8950      -M    30.3      *    41.7    28.7   145
                                                -----                  -----
                Basin wide percent of average    129                    118


UPPER GREEN RIVER

 BIG SANDY OPENING        9080    15.7    14.6   108     15.7    13.4   117
 BLIND BULL SUM           8650    33.0    28.2   117     23.1    22.4   103
 EAST RIM DIVIDE          7930    16.1    13.2   122     13.5    12.1   112
 ELKHART PARK G.S.        9400    14.2    13.5   105     13.8    13.4   103
 GROS VENTRE SUMMIT       8750    14.8    14.3   103     14.4    13.0   111
 GUNSIGHT PASS            9820    18.1      -M      *    17.3      -M      *
 KENDALL R.S.             7740    14.2    14.6    97     15.7    14.7   107
 LOOMIS PARK              8240    21.3    17.5   122     21.1    17.5   121
 NEW FORK LAKE            8340    13.3    11.3   118     11.9    11.4   104
 POCKET CREEK             9360    12.8      -M      *    14.7      -M      *
 SNIDER BASIN             8060    21.5    14.7   146     19.8    16.2   122
 SPRING CREEK DIVIDE      9000    36.1    26.8   135     33.2    26.6   125
 TRIPLE PEAK              8500    33.6    25.1   134     34.2    24.9   137
                                                -----                  -----
                Basin wide percent of average    121                    117


LOWER GREEN RIVER

 HAMS FORK                7840    17.4    12.1   144     15.5    12.3   126
 HEWINTA                  9519    13.5    12.0   113     17.3    14.6   118
 HICKERSON PARK           9145     8.6     7.6   113     10.2     7.9   129
 HOLE-IN-ROCK             9150     8.5     7.1   120     10.8     7.4   146
 INDIAN CREEK             9425    32.3    28.1   115     27.9    25.6   109
 KELLEY R.S.              8180    21.5    17.0   126     24.3    20.4   119
 STEEL CREEK PARK        10200    17.4    15.8   110     19.9    16.2   123
                                                -----                  -----
                Basin wide percent of average    120                    121


UPPER BEAR RIVER

 BUG LAKE                 7950    30.5    21.1   145     29.8    19.4   154
 HAYDEN FORK              9212    24.1    16.5   146     29.2    21.0   139
 KELLEY R.S.              8180    21.5    17.0   126     24.3    20.4   119
 LILY LAKE                9156    21.5    13.3   162     21.6    17.5   123
 MONTE CRISTO             8960    39.2    30.0   131     37.4    25.6   146
 SALT RIVER SUMMIT        7760    18.2    14.6   125     22.3    18.9   118
 TRIAL LAKE               9992    36.0    25.2   143     32.9    25.0   132
                                                -----                  -----
                Basin wide percent of average    139                    134

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


 -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.